Power Switching Devices
Output
Firing
Phase
Configurations
EZ-ZONE® ST
75A
Zero Cross,
Phase Angle
DIN-A-MITE® A
25A
DIN-A-MITE B
Agency Approvals
Page
1
UL®, CSA, CE, SCCR,
RoHS, W.E.E.E.
307
Zero Cross
1
UL®, C-UL®, CE, SCCR
308
40A
Zero Cross
1
UL®, C-UL®, CE, SCCR
311
DIN-A-MITE C
80A
Zero Cross,
Phase Angle
1 or 3
UL®, C-UL®, CE, SCCR
314
DIN-A-MITE D
100A
Zero Cross
1
UL®, C-UL®, CE, SCCR
320
POWER SERIES™
250A
Zero Cross,
Phase Angle
1 or 3
UL®, C-UL®, CE, SCCR
323
QPAC
1000A
1 or 3
UL®, C-UL®, SCCR
328
333
336
339
E-SAFE® II
35A
Zero Cross,
Phase Angle
Zero Cross
SERIES CZR
42A
Zero Cross
1
UL®, C-UL®, CE,
W.E.E.E.
UL®, CSA, CE
Solid State Relays
(SSR)
75A
Zero Cross
1
UL®, CSA
1, 2 or 3
Power Switching Devices
Maximum
Output
Product
Note: The specifications in the table above are best available values in each category. Not all
combinations of these values are available in a single model number.
WATLOW®
305
Power Switching Devices
Comparison Guide
Initial
Cost
3 Year
Control
Cost ① Life
Heater
EMI
Response
Life GenerationControl RateOptions
Comments
Low for low Highest
current
Electromechanical Relay and Contactor
Limited
Shortest
Yes, coil
Poor
Slowest
None
electrical and and contacts
mechanical
To extend life the cycle
time is normally extended
to 30 seconds or more.
Hybrid Power Switch
Low
Medium
High
Good
Minimal
Good
Fast
None
Such as Watlow E-SAFE II
and NO ARC relays.
Mercury Displacement Relay (MDR)
Low for
Medium
High
Good
Yes, coil
Fair to
Medium
None
Mercury is not desirable.
low to
and contact
good
to fast
Minimum cycle time is
medium two seconds. Position
currentsensitive.
Solid State Relay (SSR) Fixed Time Base
Medium
Extended
Extended
Minimal
Good
Fast
None
Excellent control with one
Medium
second cycle time.
Requires heatsink.
Silicon Controlled Rectifier (SCR) Fixed Time Base
Medium
Low
Extended
Extended
Minimal
Good
Fast
None
Excellent control with one
second cycle time.
SCR Burst Firing
High
Low
Extended
Longest
Minimal
Excellent Fastest
None
Fastest variable time base
unit.
SCR Phase-Angle Firing
High
Low
Extended
Longest
High
Excellent Fastest
Current
Required for tungsten
limit
elements, transformers,
or for current limiting.
Saturable Core Reactor
Highest
Low
Extended
Longest
Minimal
Very
Fast
Current
Cannot be turned full on
good
limit
or off, inefficient.
①Includes heater replacement and lost production.
306
WATLOW®
Power Switching Devices
EZ-ZONE® ST
The EZ-ZONE ST integrated solid state controller from
Watlow, offers a complete thermal system control
solution in a single package. Features include a PID
temperature controller connected to a high-amperage
solid state relay with the option of adding a properly
sized heat sink, an over- and under-temperature
limit, a power shut-down contactor and digital
communications in one complete and professionally
engineered product.
Because the system is modular and scalable, a user only
pays for what is needed. Stacking the EZ-ZONE ST
integrated controller into multiple configurations enables
flexibility to standardize the product platform to solve a
wide range of application needs.
This integrated controller also includes 200KA short
circuit current rating (SCCR) tested up to 480VAC to
minimize damage in the event of a short circuit when
used with required fusing.
Features and Benefits
Back panel or DIN-rail mount
• Provides several mounting options
Compact package
• Reduces panel size
Touch-safe package
• Complies with IP2X increasing user safety
±0.1 percent temperature accuracy
• Provides efficient and accurate temperature control
200KA SCCR with proper fusing
• Minimizes damage in the event of a short circuit
Agency approvals: UL®, CSA, CE, RoHS, W.E.E.E.
• Meets applications requiring agency approvals
Three-year warranty
• Ensures Watlow’s reliability and product support
Off-the-shelf designed system solution
• Improves system reliability and termination reduction
• Reduces installation cost
• Eliminates incompatibility headaches often encountered with using many different components and brands
Profile capability
• Includes ramp and soak with four files and
40 total steps
Ability to communicate with programmable logic
controller (PLC), personal computer (PC) or
operator interface terminal (OIT)
• Optional EIA 485 Modbus® RTU
• RUI/communications gateway with optional
EIA 232/485 Modbus® RTU, EtherNet/IP™/TCP Modbus®, DeviceNet™ or PROFIBUS DP. Refer to page 351 for further information.
Solid state relay output
• Allows faster cycling, more precise control, increased heater life and improves energy efficiency
• Ability to handle up to 75 amperes
• Uses either zero-cross or phase angle control modes for flexibility to control resistive loads such as nichrome, tungsten or quartz lamps
• Utilizes phase angle control mode to prevent load failure or blowing fuses for tungsten or quartz loads
PID temperature control
• Allows single input/dual output
• Allows standard PID or adaptive TRU-TUNE+ tuning algorithms for demanding controllability requirements
Optional temperature limit
• Increases safety in over- and under-temperature condition
Optional definite purpose mechanical contactor
• Enables circuit safety shut down driven by limit control or PID alarm output signal
For detailed product and ordering
information, see the full EZ-ZONE ST product
section located on pages 227 through 233.
WATLOW®
307
Power Switching Devices
DIN-A-MITE® A
The DIN-A-MITE® A power controller provides a
low-cost, highly compact and versatile solid state option
for controlling electric heat. This controller is designed
and manufactured with the quality features expected from
Watlow. DIN-rail and panel mounting is standard on every
controller. There is no need to worry about mercury, the
DIN-A-MITE controller is mercury free.
Features include single-phase zero cross switching up
to 25 amperes at 600VAC (see rating curve). A unique
integrated design removes the guesswork associated
with selecting a proper heat sink and adequate
terminations for the application.
Variable time-base, 4-20mA process control and
VAC/VDC input contactor versions are available. All
options are model number dependent and factory
configurable. This power controller also includes 200KA
short circuit current rating (SCCR) tested up to 480VAC
to minimize damage in the event of a short circuit when
used with required fusing.
308
Features and Benefits
200KA SCCR with proper fusing
• Minimizes damage in the event of a short circuit
DIN-rail and panel mounting
• Provides versatility and quick, low-cost installation
Compact size
• Reduces panel space and cost
Touch-safe terminals
• Increases safety for installer and user
Mercury free
• Assures environmental safety
Faster switching with solid state
• Saves energy and extends heater life
UL® 508 listed, C-UL® and CE with filter
• Meets applications requiring agency approval
Back-to-back SCR design
• Ensures a rugged design
WATLOW®
Power Switching Devices
DIN-A-MITE A
Operator Interface
•Control input
•Input indication LED
Amperage
•Single phase, see the output rating curve
•Max. I2t for fusing: 4000A2sec
•Latching current: 200mA min.
•Holding current: 100mA min.
•Power dissipation is 1.2 watts per ampere switched
•200KA SCCR, Type 1 and 2 approved with the
recommended fusing; see user manual.
Line Voltage
•24 to 660VAC model number dependent; see ordering
information
•Off-state leakage: 1mA at 77°F (25°C) max.
•50/60Hz independent
Control Mode, Zero Cross
•Control option C: VDC input, contactor output
•Control option K: VAC input, contactor output
•To increase service life on contactor models, the cycle
time should be less than three seconds
•Control option F: 4 to 20mA DC input, variable
time-base control output (3 cycles on, 3 cycles off at
50% power)
Control Input
•AC contactor: 24VAC ±10%, 120VAC +10/-25%,
240VAC +10/-25% @ 25mA max.
•DC Contactor: 4.5 to 32VDC: max. ­current @ 4.5 VDC
is 8mA
•Loop powered linear current 4 to 20mA DC:
loop-powered, control option F0 only (requires current
source with 6.2VDC available, no more than three
DIN-A-MITE inputs can be connected in series)
Agency Approvals
•CE with proper filter:
204/108/EC Electromagnetic Compatibility Directive
EN 61326-1: Industrial Immunity Class A Emissions
2006/95/EC Low Voltage Directive
EN 50178 Safety Requirements
Installation category III, pollution degree 2
•
UL® 508 listed and C-UL® File E73741
WATLOW®
Control Input Terminals
•Compression: will accept 24 to 16 AWG (0.2 to 1.5 mm2) wire
Line and Load Terminals
•Compression: will accept 18 to 8 AWG (0.8 to 8.4 mm2) wire
Operating Environment
•-4 to 176°F (-20 to 80°C); see the output rating curve
chart for your application
•0 to 90% RH (relative humidity), non-conden­sing
•Insulation tested to 3,000 meters
•Units are suitable for “Pollution degree 2”
Mounting
Options include DIN-rail or standard back panel mounting
•DIN EN 50022, 35 mm by 7.5 mm
•Mount cooling fins vertically
Dimensions
•3.7 in. (94 mm) high x 2.0 in. (50 mm) wide x
3.9 in. (98 mm) deep
•Weight: 0.71 lb (0.32kg)
Specifications are subject to change without notice.
Output Rating Curve
30
Current (Amperes) into
a Resistive Load
Specifications
DIN-A-MITE Style A Ratings at 100% On
25
20
15
10
5
0
25 30 35 40 45 50 55 60 65 70 75 80 85
Max. Internal Enclosure Ambient Temperature (°C)
309
Power Switching Devices
DIN-A-MITE A
Ordering Information
Part Number
①
D
③
1=
④
0=
②
Phase
④
Cooling
& Current
Rating
1
0
③
A
-
⑤ ⑥
Line &
Load
Voltage
⑦⑧
Control
Cooling and Current Rating (See rating curve)
Natural convection current rating 18A @ 50°C
Line and Load Voltage
02= 24 to 48VAC
24= 120 to 240VAC
60= 277 to 600VAC
⑦⑧
C0=
F0=
K1=
K2=
K3=
-
⑩
⑪⑫
User
Manual
Custom
Options
0
⑩
Phase
1-phase, 1 controlled leg
⑤ ⑥
⑨
0=
1=
2=
3=
User Manual
English
German
Spanish
French
⑪ ⑫
Custom Options
00 = Standard part
XX = Any letter or number, custom options, labeling, etc.
Control
4.5 to 32VDC input, contactor output
4 to 20mA DC input, variable time-base output
22 to 26VAC input, contactor output
100 to 120VAC input, contactor output
200 to 240VAC input, contactor output
Recommended Fuses and Fuse Holders
Semiconductor Fuses and Holders
Part Number
17-8025
17-5110
Description
25A fuse
10-25A holder
DFJ Combination Fuses and Holders
Part Number
0808-0325-0020
0808-0325-0030
0808-0326-1530
310
Description
20A fuse
30A fuse
15-30A holder
WATLOW®
Power Switching Devices
DIN-A-MITE B
The DIN-A-MITE B power controller provides a
low-cost, highly compact and versatile solid state option
for controlling electric heat. This controller is designed
and manufactured with the quality features expected from
Watlow. DIN-rail and panel mounting are standard on
every control. There is no need to worry about mercury,
the ­­­DIN-A-MITE controller is mercury free.
Features include single-phase and three-phase zero
cross switching up to 40 and 22 amperes, respectively,
at 600VAC (see rating curve). A unique, integrated
design removes the guesswork associated with selecting
a proper heat sink and adequate terminations for the
application.
Variable time-base, 4-20mA process control and
VAC/VDC input contactor versions are available.
A shorted output alarm option is also available.
All options are model number dependent and factory
configurable. This power controller includes 200KA short
circuit current rating (SCCR) tested up to 480VAC to
minimize damage in the event of a short circuit when
used with required fusing.
WATLOW®
Features and Benefits
200KA SCCR with proper fusing
• Minimizes damage in the event of a short circuit
DIN-rail and panel mounting
• Provides versatility and quick, low-cost installation
Compact size
• Reduces panel space and cost
Touch-safe terminals
• Increases safety for installer and user
Single- and three-phase power
• Permits use in a variety of applications
Mercury free
• Assures environmental safety
Faster switching with solid state
• Saves energy and extends heater life
UL® 508 listed, C-UL® and CE with filter
• Meets applications requiring agency approval
Back-to-back SCR design
• Ensures a rugged design
Shorted output alarm (optional)
• Simplifies troubleshooting and reduces downtime
311
Power Switching Devices
DIN-A-MITE B
Output Rating Curve
˚
90
DIN-A-MITE Style B Ratings at 100% On
85
Natural Convection
80
Current Rating Table
Phase Cooling
1
2, 8
3, 9
75
70
65
se
ha
g
leg
45
2 le
50
35A
25A
17A
le P
se, 3
55
0
0
0
Current
at 122˚F
(50°C)
g
Sin
60
,
ase
3-pha
312
Specifications are subject to change without notice.
3-ph
Operator Interface
• Control input and indication light
• Alarm output and indication light
Amperage Rating
• See the output rating curve
• Max. surge current for 16.6ms, 380A peak
• Max. I2t for fusing is 4,000A2s
• Latching current: 200mA min.
• Holding current: 100mA min.
• Off-state leakage 1mA at 77°F (25°C) max.
• Power dissipation = 1.2 watts per ampere per leg
switched
• 200KA SCCR, Type 1 and 2 approved with the
recommended fusing; see user manual.
Line Voltage
• 24 to 660VAC model number dependent; see ordering
information
Control Mode, Zero Cross
• Control option C: VDC input, contactor output
• Control option K: VAC input, contactor output
• To increase service life on contactor models, the cycle
time should be less than three seconds
• Control option F: 4 to 20mA DC input, variable
time-base control output
Control Input
• AC contactor: 24VAC ±10%, 120VAC +10/-25%,
240VAC +10/-25% @ 25mA max. per controlled leg
• DC contactor: 4.5 to 32VDC: max. ­current @ 4.5VDC
is 6mA per leg. Add 2mA per LED used to the total
current
• Linear current: 4 to 20mA DC: loop-powered, control
option F0 only (requires current source with 6.2VDC
available, no more than three DIN-A-MITE inputs
connected in series)
Alarm
Shorted SCR Alarm Option
• Alarm state when the input command signal off and a 10A or more load current is detected by the current transformer (two turns required for 5A and three turns for 2.5A)
Alarm Output
• Energizes on alarm, non-latching
• Triac 24 to 240VAC, external supply with a current rating of 300mA @ 77°F (25°C), 200mA @ 122°F (50°C), 100mA @ 176°F (80°C) and a holding current of 200 µA with a latching current of 5mA typical
Agency Approvals
• CE with proper filter:
204/108/EC Electromagnetic Compatibility Directive
EN 61326-1: Industrial Immunity Class A Emissions
2006/95/EC Low Voltage Directive
EN 50178 Safety Requirements
Installation category III, pollution degree 2
•
UL® 508 listed and C-UL® File E73741
Control Input Terminals
• Compression: will accept 24 to 16 AWG (0.2. to
1.5 mm2) wire
Line and Load Terminals
• Compression: will accept 18 to 8 AWG
(0.8 to 8.4 mm2) wire
Operating Environment
• See the output rating curve
• 0 to 90% RH (relative humidity), non-condensing
• Storage temperature: -40 to 185°F (-40 to 85°C)
• Operating temperature: -4 to 176°F (-20 to 80°C)
• Insulation tested to 3,000 meters
DIN-rail Mount
• DIN EN 50022, 35 mm by 7.5 mm
Back-Panel Mount
• Four mounting holes No. 6 to No. 8 (M3 to M4)
fastener
Dimensions
• 3.7 in. (94 mm) high x 3.3 in. (83 mm) wide x
4.9 in. (124 mm) deep
• Weight: 1.5 lb (0.68kg)
Max. Internal Enclosure Ambient Temperature ( C)
Specifications
40
35
30
25
0
5 10 15 20 25 30 35 40 45 50 55 60
Current (Amperes) into a Resistive Load
WATLOW®
Power Switching Devices
DIN-A-MITE B
Ordering Information
Part Number
②
①
③
Phase
D
④
Cooling
& Current
Rating
B
-
⑤⑥
Line &
Load
Voltage
⑦⑧
⑨
⑩
⑪ ⑫
Control
Alarm
User
Manual
Custom
Options
③
1=
2=
3=
8=
9=
Phase
1-phase, 1 controlled leg
3-phase, 2 controlled legs
3-phase, 3 controlled legs
2 independent zones (control options C or K)
3 independent zones (control options C or K)
④
Cooling and Current Rating (See rating curve)
Natural convection
0=
⑤ ⑥
Line and Load Voltage
02= 24 to 48VAC
24= 120 to 240VAC
60= 277 to 600VAC
⑦⑧
C0=
F0=
K1=
K2=
K3=
-
⑨
Alarm
0= No alarm
S= Shorted SCR alarm
⑩
0=
1=
2=
3=
User Manual
English
German
Spanish
French
⑪ ⑫
Custom Options
00 = Standard part
XX = Any letter or number, custom options, labeling, etc.
Control
4.5 to 32VDC input, contactor output
4 to 20mA DC input, variable time-base output
22 to 26VAC input, contactor output
100 to 120VAC input, contactor output
200 to 240VAC input, contactor output
Recommended DIN-rail Mount Fuses and
Fuse Holders
Semiconductor Fuses and Holders
Part Number
17-8020
17-8025
17-8030
17-8040
17-8050
17-5110
17-5114
Description
20A fuse
25A fuse
32A fuse
40A fuse
50A fuse
10-25A holder
32-50A holder
DFJ Combination Fuses and Holders
Part Number
0808-0325-0020
0808-0325-0030
0808-0325-0040
0808-0325-0050
0808-0326-1530
0808-0326-3560
WATLOW®
Description
20A fuse
30A fuse
40A fuse
50A fuse
15-30A holder
35-60A holder
313
Power Switching Devices
DIN-A-MITE C
The DIN-A-MITE C silicon controlled rectifier (SCR)
power controller provides a low cost, compact and
versatile solid state option for controlling electric heat.
This controller is designed and manufactured with the
quality features expected from Watlow. DIN-rail/panel
mount and through-wall mount versions are available.
Features include single-phase, three-phase/two leg, and
three-phase/three leg, 24-600VAC operation. Current
switching capabilities range from 30 to 80A depending
on the model ordered.
Variable time-base, linear voltage and current process
control or VAC/VDC input contactor versions are
available. Single-phase, phase angle firing and current
limiting are also available. All options are model number
dependent and factory configurable. This power
controller includes 200KA short circuit current rating
(SCCR) tested up to 480VAC to minimize damage in the
event of a short circuit when used with required fusing.
Features and Benefits
200KA SCCR with proper fusing
• Minimizes damage in the event of a short circuit
DIN-rail, panel and thru-wall mounting
• Provides versatility and quick, low-cost installation
Compact size
• Reduces panel space and cost
Touch-safe terminals
• Increases safety for installer and user
One- and three-phase power
• Can be used in a variety of applications
Open heater/shorted output alarm
• Notifies the user in case of an open heater or
shorted output
Mercury free
• Assures environmental safety
Faster switching with solid state
• Saves energy and extends heater life
UL® 508 listed, C-UL® and CE with filter
• Meets applications requiring agency approval
System solution component
• Provides single source thermal loop
Back-to-back SCR design
• Ensures a rugged design
314
WATLOW®
Power Switching Devices
DIN-A-MITE C
Specifications
Operator Interface
• Control input and indication light
• Alarm output and indication light
• Current limit indication LED
Amperage Rating
• See output rating curves on the next page
• Max. surge current for 16.6ms, 1,350A peak
• Max. I2t for fusing is 9100A2s
• Latching current: 200mA min.
• Holding current: 100mA min.
• Fan current: 0.14A for 24VDC; 0.12A for 120VAC;
0.06A for 240VAC
• Off-state leakage 1mA at 77°F (25°C) max.
• Power dissipation: 1 watt per ampere per leg switched
• 200KA SCCR, Type 1 and 2 approved with the recommended fusing; see user manual
Line Voltage
• 24 to 48VAC units: 20.4VAC min. to 53VAC max.
• 100 to 240VAC units: 48VAC min. to 265VAC max.
• 277 to 600VAC units: 85VAC min. to 660VAC max.
• 100 to 120VAC, 200 to 208VAC, 230 to 240VAC,
277VAC, 400VAC, 480VAC, 600VAC, +10/-15%,
50 to 60Hz independent ±5% (control options L,
P and S)
Alarms (Zero cross models only)
Shorted SCR Alarm Option
•Alarm state when the input command signal is off
and a 10A or more load current is detected by the current transformer (two turns required for 5A and three turns for 2.5A)
Open Heater Alarm Option (Control Option
S only)
•Alarm state when the input command signal is on and the load current detected by the current transformer is 20% less than customer adjusted
set point
Alarm Output
•Energizes on alarm, non-latching
•Triac 24 to 240VAC, external supply with a current rating of 300mA @ 77°F (25°C), 200mA @ 122°F (50°C), 100mA @ 176°F (80°C) and a holding current of 200µA with a latching current of
5mA typical
WATLOW®
Agency Approvals
• CE with proper filter:
204/108/EC electromagnetic compatibility directive
EN 61326-1: industrial immunity Class A emissions not
suitable for Class B environments
Phase angle and phase angle with current limit (control options P and L) are not CE approved for conducted or radiated emissions
2006/95/EC low voltage directive EN 50178 safety requirements installation category III, pollution degree 2
•UL® 50 Type 4X enclosure, Class 1, Div. 2 per ANSI/ISA 12.12.01. Through-wall heat sink models T4 File 184390
•
UL® 508 listed and C-UL® File E73741
• Shock and vibration tested to IEC 60068-2-32
• Vibration tested to IEC 60068-2-6
Control Input Terminals
• Compression: will accept 24 to 16 AWG
(0.2 to 1.5 mm2) wire
• Torque to 4.4 in. lb (0.5 Nm) max. with a
1/8 in. (3.5 mm) blade screwdriver
Line and Load Terminals
• Compression: will accept 14 to 4 AWG
(2 to 21 mm2) wire
• Torque to 24 in. lb (2.7 Nm) max. with a
1/4 in. (6.4 mm) blade screwdriver, or a type 1A,
#2 Pozi driver
Operating Environment
• See the output rating curve chart on next page
• 0 to 90% RH (relative humidity), non-condensing
• Storage temperature: -40 to 185°F (-40 to 85°C)
• Operating temperature: -29 to 176°F (-34 to 80°C)
• Insulation tested to 3,000 meters
DIN-Rail Mount
• DIN EN 50022, 35 mm by 7.5 mm
Back-Panel Mount
• Four mounting holes No. 6 to No. 8 (M3 to M4) fastener
Through-Wall Mount
• See page 317 for through-wall panel cutout (Note: Mount cooling fins vertically.)
Additional Specifications for Contactors
and Proportional Controllers
Control Mode, Zero-Cross
• Control option C: VDC input, contactor output
• Control option K: VAC input, contactor output
• To increase service life on contactor models, the cycle time should be less than three seconds
• Control option F: 4 to 20mA DC input, variable
time-base control output
315
Power Switching Devices
DIN-A-MITE C
85
Natural Convection
75
70
65
Si
55
g
2 le
40
e
as
45
se,
ha
50
Ph
leng
60
leg
Max. Internal Enclosure
Ambient Temperature (°C)
80
3 -p
35
30
25
0
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
Current (Amperes) into a Resistive Load
DIN-A-MITE Style C Ratings at 100% On
80
70
65
Fan-Cooled
3-
55
as
e
g
le
le
3
40
as
2
e,
e,
as
45
-Ph
ph
ph
50
gle
Sin
60
3-
g
Max. Internal Enclosure
Ambient Temperature (°C)
75
35
30
25
0
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90
Current (Amperes) into a Resistive Load
DIN-A-MITE Style C Ratings at 100% On
80
Recommended Max.
Enclosure Temperature is 176°F (80°C)
75
70
65
Thru-Wall Heat Sink
3l
35
g
le
,
se
ha
40
e
as
45
,2
se
ha
50
Ph
P
3-
55
le-
ng
Si
60
3-P
30
eg
Operation
• With control option S (single-cycle, variable
time-base) the output is not on for more than one consecutive AC cycle below 50% power and not off for more than one consecutive AC cycle above
50% power
• Phase angle control, single-phase only
Control Input
• 0 to 20mA, 4 to 20mA, 0 to 5VDC, 1 to 5VDC and
0 to 10VDC
• Input impedance 250Ω for 4mA to 20mA, 5kΩ for linear voltage input
Output Voltage
• 100 to 120VAC, 200 to 208VAC, 230 to 240VAC,
277VAC, 400VAC, 480VAC and 600VAC, ±10%
Linearity (Control Option S)
• ±5% input to output power over 0 to 100% of span between calibration points
Linearity (Control Options P and L)
• ±5% input to output power, as referenced to a sinusoidal power curve, between calibration points
Resolution
• Better than 0.1% of input span with respect to
output change
Soft Start (Control Options P and L)
Typically:
• 5 seconds soft start on power up
• Soft start on thermostat overtemperature
• Soft start on 1/2 cycle drop out detection
• 1 second soft start on set point change
Options
• Manual control kit (1kΩ potentiometer) 08-5362
• Alarm option is not available on control options P or L
DIN-A-MITE Style C Ratings at 100% On
90
,3
Additional Specifications for Phase Angle,
Phase Angle Current Limit and SingleCycle Variable Time-Base
Output Rating Curves
e
has
3-p
Control Input
• AC contactor: 24VAC ±10%, 120VAC +10/-25%, 240VAC +10/-25% @ 25mA max. per controlled leg
• DC contactor: 4.5 to 32VDC: max. c
­ urrent @ 4.5VDC is 6mA per leg, add 2mA per LED used to the total current
• Loop-powered linear current 4 to 20mA DC:
loop-powered, control option F0 only, no more than three inputs connected in series
Ambient Air Around Heatsink Fins ( °C)
Specifications (Continued)
25
0
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
Current (Amperes) into a Resistive Load
Specifications are subject to change without notice.
316
WATLOW®
Front
Power Switching Devices
DIN-A-MITE C
Front
Dimensions—Natural Convection,
DIN-rail/Panel Mount
Dimensions—Natural Convection,
Through-Wall Mount①
Front
Front
1.51 in. (38 mm)
1.81 in. (46 mm)
2.11 in. (54 mm)
Allowance for
No. 8 Fastener (M4)
1
Side
DIN-EN 50022
35 by 7.5 mm Rail
(Clipping Distance =
1.366 to 1.390 in.
[34.7 to 35.3 mm])
2
4 in. (102 mm) Min.
Clearance for Air Flow
(Top and Bottom)
5
4.81 in. (122 mm)
3
Panel
Opening
Outline
5.45 in.
(138 mm)
3.42 in.
(87 mm)
4
8 ea. M5-0.8 x 10 mm
M5 Internal Tooth Lock Washers Included
1
2
Ground Lug
(2-8 Gauge)
3
7 in. (178 mm)
6
4
1.89 in.
(48 mm)
Allowance for
No. 8 Fastener (M4)
0.4 in. (10 mm) Min.
Clearance for Air Flow
(Both Sides)
4 in. (102 mm) Clearance for Air Flow and Wire Bending Radius
5.74 in. (146 mm)
4 in. (102 mm)
5.59 in. (142 mm)
Top
1.73 in. 2.26 in.
(44 mm) (57 mm)
3.10 in.
(79 mm)
6
Top
Side
5.17 in.
(131 mm)
5
2.25 in.
(57 mm)
Outside
(Any Gauge)
5.89 in.
(150 mm) 5 in.
(127 mm)
4.50 in.
(114 mm)
2.17 in. (55 mm)
Inside
(12 Gauge)
Rail Release Tab
(pull down)
4 in. (102 mm) min.
4 in. (102 mm) Clearance for Air Flow and Wire Bending Radius
Sheet Metal (12 GA)
Front Panel is Touch-Safe, No Clearance is Required
Top
Front Panel is Touch-Safe,
No Clearance is Required
Panel Cutout
Drill 0.228 in. (5.8 mm) (8)
Typical Panel
Opening
5.74 in.
(146 mm)
Heat Sink Outline
0.375 in. (9.5 mm) Reference
0.425 in. (10.8 mm)
1.625 in.
(41.3 mm)
Side
Ground
Wire
Entry
4.625 in.
(117.5 mm)
3.25 in.
(83 mm)
6.375 in.
(161.9 mm)
5.850 in.
(148.6 mm)
Dimensions—Fan Cooled,
DIN-rail/Panel Mount
0.338 in. (8.6 mm) Reference
0.275 in. (7.0 mm)
1.034 in. (26.3 mm)
Side
4 in. (102 mm) Clearance for Air Flow and Wire Bending Radius
5.74 in. (146 mm)
4 in. (102 mm)
5.59 in. (142 mm)
1.73 in.
(44 mm)
3.103 in.
(78.8 mm)
3.862 in.
(98.1 mm)
4.137 in.
(105.1 mm)
2.26 in.
(57 mm)
5.89 in.
(150 mm)
5.17 in.
(131 mm)
3.10 in.
(79 mm)
①With
5 in.
(127 mm)
7.64 in.
(194 mm)
the potential for high through-wall heat sink temperatures,
application may require a touch-safe shield.
Rail Release Tab
(pull down)
Front Panel is Touch-Safe,
No Clearance is Required.
4 in. (102 mm) min.
4 in. (102 mm) Clearance for Air Flow and Wire Bending Radius
WATLOW®
317
Power Switching Devices
DIN-A-MITE C
Extended Heater and Power Controller Life
with Variable Time Base
With variable time-base control, the power controller
automatically adjusts the time-base and output power
with respect to the command signal. Accelerated life
testing shows that variable time-base control
significantly reduces expansion and contraction of
the heater element. This extends heater and power
controller life while improving process temperature
control. This saves money on heaters, downtime and
maintenance.
Loop Powered or Transformer Powered
Loop Powered
By using a temperature controller’s 4-20mA process
output signal as the power supply for the DIN-A-MITE
input, the cost of the power controller can be reduced.
With control option F0 the 4-20mA control signal
simultaneously powers the DIN-A-MITE’s internal
electronics and provides the input command signal.
Transformer Powered
DIN-A-MITE controllers with single-cycle, variable
time-base or phase angle outputs (control options L, P
and S) detect the power line zero cross with a
transformer that also powers their internal electronics.
These units can be controlled manually with a
potentiometer or automatically with a temperature
controller using any of the control options: 4-20mA,
linear voltage (0-5,1-5 and 0-10VDC).
Loop-Powered, Variable Time-Base Output
Models: DC_ _ - _ _F0 - _ _ _ _
20% Power Output: 3 AC cycles on, 12 cycles off
50% Power Output: 3 AC cycles on, 3 cycles off
80% Power Output: 12 AC cycles on, 3 cycles off
With loop-powered, variable time-base control, the
minimum on or off time is three cycles.
Phase Angle Output
Models: DC1_ - _ _ [L, P] _ - 0_ _ _
Single-Cycle, Variable Time-Base Output
Models: DC_ _ - _ _S_ - _ _ _ _
25% Power Output: 1 AC cycle on, 3 cycles off
50% Power Output: 1 AC cycle on, 1 cycle off
With single-cycle, variable time-base control, at
50 percent power, the output is on for one cycle and
off for one cycle. At 25 percent, it is on for one cycle
and off for three cycles. Under 50 percent, the output is
not on for more than one consecutive cycle; over
50 percent the output is not off for more than one
consecutive cycle.
Semiconductor Fuses for Applications
through 600VAC
Fuse Part Number
Fuse Rating
40A
50A
63A
80A
100A
Watlow
17-8040
17-8050
17-8063
17-8080
17-8100
Cooper Bussman®
FWP-40A14F
FWP-50A14F
FWP-63A22F
FWP-80A22F
FWP-100A22F
Fuse Holder Part Number
Fuse Rating
40A
50A
63A
80A
100A
Watlow
17-5114
17-5114
17-5122
17-5122
17-5122
Ferraz Shawmut
US141I
US141I
US221I
US221I
US221I
Combined Branch Protection and
Semiconductor Fuses for Applications
through 480VAC
Fuse Part Number
Fuse Rating
125% of Load
20A
30A
40A
50A
63A
80A
100A
Watlow
0808-0325-0020
0808-0325-0030
0808-0325-0040
0808-0325-0050
0808-0325-0060
0808-0325-0080
0808-0325-0100
Cooper Bussman®
DFJ-20
DFJ-30
DFJ-40
DFJ-50
DFJ-60
DFJ-80
DFJ-100
Fuse Holder Part Number
Phase angle control (control options L and P) is infinitely
variable over the period of the AC sine wave. It provides
a variable voltage and/or current output. The phase
angle circuitry is transformer powered and accepts a
linear voltage, current or potentionmeter input.
318
Fuse Rating
20 and 30A
40 to 63A
80 and 100A
Watlow
0808-0326-1530
0808-0326-3560
0808-0326-7010
Cooper Bussman®
CH30J1i
CH60J1i
J601001CR
WATLOW®
Power Switching Devices
DIN-A-MITE C
Ordering Information
Part Number
②
①
③
Phase
D
④
Cooling
& Current
Rating/Leg
C
-
⑤ ⑥
Line &
Load
Voltage
⑦⑧
⑨
⑩
⑪ ⑫
Control
Alarm
User
Manual
Custom
Options
③
1=
2=
3=
8=
9=
1-phase, 1 controlled leg
3-phase, 2 controlled legs
3-phase, 3 controlled legs (use with four wire wye)
2 independent zones (control options C, K)
3 independent zones (control options C, K)
④
0=
1=
2=
3=
T=
Cooling and Current Rating Per Leg (See chart below)
Natural convection standard DIN-rail or panel heat sink
Fan cooled 120VAC standard DIN-rail or panel heat sink
Fan cooled 240VAC standard DIN-rail or panel heat sink
Fan cooled 24VDC standard DIN-rail or panel heat sink
Natural convection through-wall or cabinet heat sink (NEMA 4X)
⑤⑥
Line and Load Voltage
24 to 48VAC (control options C, F, K)
100 to 120VAC (control options L, P, S)
200 to 208VAC (control options L, P, S)
100 to 240VAC (control options C, F, K); 230 to 240VAC
(control options L, P, S)
277VAC (control options L, P, S)
400VAC (control options L, P, S)
480VAC (control options L, P, S)
277 to 600VAC (control options C, F, K); 600VAC (control
options L, P, S)
02=
12=
20=
24=
27=
40=
48=
60=
Phase
-
⑦⑧
C0=
F0=
K1=
K2=
K3=
L (0 to 5)=
Control
4.5 to 32VDC input, contactor output
4 to 20mA DC input, variable time-base output
22 to 26VAC input, contactor output
100 to 120VAC input, contactor output
200 to 240VAC input, contactor output
Phase angle with current limiting* (single-phase only)
P (0 to 5)= Phase angle* (single-phase only)
S (0 to 5)= Single-cycle variable time-base output
0 = 4 to 20mA input
1 = 12 to 20mA input (option S only)
2 = 0 to 20mA input
3 = 0 to 5VDC input
4 = 1 to 5VDC input
5 = 0 to 10VDC input
* Not CE Approved for conducted or radiated emissions.
⑨
0=
S=
H=
Alarm
No alarm
Shorted SCR alarm (not available with control options L or P)
Open-heater and shorted-SCR alarm (control option S only)
⑩
0=
1=
2=
3=
User Manual
English
German
Spanish
French
⑪ ⑫
Custom Options
00= Standard part
1X= 1-second soft start (control options P, L)
XX= Any letter or number, custom options, labeling, etc.
DIN-A-MITE C Current Rating Table
Phase 1
1
1
2, 8
2, 8
2, 8
3, 9
3, 9
3, 9
WATLOW®
Cooling
0
T
1, 2, 3
0
T
1, 2, 3
0
T
1, 2, 3
Current at 122˚F (50˚C)
55A
60A
75A
40A
46A
65A
30A
35A
55A
319
Power Switching Devices
DIN-A-MITE D
The DIN-A-MITE D silicon controlled rectifier (SCR) power
controller provides an inexpensive, versatile product for
controlling heat in an efficient package. This controller
is designed and manufactured with the quality features
expected from Watlow. The mounting footprint matches
that of the industry standard mercury displacement relay
(MDR), but there is no need to worry about mercury, the
DIN-A-MITE controller is mercury free.
The DIN-A-MITE Style D is capable of zero-cross
switching up to 100 amperes single-phase, at 600VAC
at 86°F (30°C), depending on the model selected.
Combining the input of two or three controllers allows
control of three-phase loads. The controller is completely
touch-safe and includes on-board, front-accessible,
semiconductor fuses. Options include a current
transformer for load current monitoring and a shorted
output alarm. The controller is UL® 508, C-UL® and CE
approved making it ideal for panels and cabinets that
require agency approvals.
Variable time-base, 4-20mA process control, and
VAC/VDC input contactor options are available.
All options are model number dependent and factory
configurable. This power controller also includes 200KA
short circuit current rating (SCCR) tested up to 480VAC
to minimize damage in the event of a short circuit when
used with required fusing.
320
Features and Benefits
200KA SCCR with proper fusing
• Minimizes damage in the event of a short circuit
Standard panel mount
• Provides same mount as industry standard 100A MDR
Compact size
• Reduces panel space and cost
Touch-safe terminals
• Increases safety for installer and user
Mercury free
• Assures environmental safety
Faster switching with solid state
• Saves energy and extends heater life
UL® 508 listed, C-UL® and CE with filter
• Meets applications requiring agency approval
Back-to-back SCR design
• Ensures a rugged design
On-board semiconductor fusing
• Provides quick access with no extra mounting necessary
WATLOW®
Power Switching Devices
DIN-A-MITE D
Amperage
•See the Output Rating Curve below
•Max. surge current for 16.6ms, 1,800A peak
•Latching current: 500mA min.
•Holding current: 200mA min.
•Power dissipation is 1.4 watts per ampere switched
including on-board fusing
•200KA SCCR, Type 1 and 2 approved with the
recommended fusing; see user manual
Line Voltage
• 24 to 48VAC units: 20VAC min. to 53VAC max.
• 100 to 240VAC units: 48VAC min. to 265VAC max.
• 277 to 480VAC units: 85VAC min. to 528VAC max.
• 277 to 600VAC units: 85VAC min. to 660VAC max.
• 50/60Hz independent ±5%
Control Mode, Zero Cross
•Control option C: VDC input, contactor output
•Control option K: VAC input, contactor output
•To increase service life, the cycle time should be less
than three seconds
•Control option F: 4 to 20mA DC input, variable
time-base control output
Control Input
•AC contactor: 24VAC ±10%, 120VAC +10/-25%,
240VAC +10/-25% @ 25 mA max. per controlled leg
•DC Contactor: 4.5 to 32VDC: max. ­current @ 4.5VDC is
8mA per leg
•Linear current: 4 to 20mA DC, loop powered, input
Type F0 option only, no more than three DIN-A-MITE
inputs connected in series
Shorted SCR Alarm Option
•Alarm state when the input command signal off and
a 15A or more load current is detected by the current
transformer
Alarm Output
• Energizes on alarm, non-latching
• Triac 24 to 240VAC external supply with a current
rating of 300mA @ 77°F (25°C)
Current Sensing
• On-board current transformer (CT), typically 0.2VAC
output signal per ampere sensed into 1,000Ω load
Agency Approvals
• CE with proper filter:
204/108/EC Electromagnetic Compatibility Directive
EN 61326-1: Industrial Immunity Class A Emissions
Not suitable for Class B emissions environment
2006/95/EC Low Voltage Directive
EN 50178 Safety Requirements
• UL® 508-listed and C-UL® File E73741
Control Input Terminals
• Compression: will accept 26 to 12 AWG
(0.13 to 3.3 mm2) wire
Line and Load Terminals
• Compression: will accept 6 to 2 AWG
(13.3 to 33.6 mm2) wire
Operating Environment
•Operating temperature range: -4 to 176°F (-20 to 80°C)
•0 to 90% RH (relative humidity), non-condensing
•Vibration: 2 g, 10Hz to 150Hz, applied in any one of
three axes
•Storage temperature: -40 to 185°F (-40 to 85°C)
•Insulation tested to 3,000 meters
•Installation Category III, pollution degree 2
Mounting
• Back panel mounting; fits the same mounting pattern
as a 100A, single-phase mercury displacement relay
• On-board semiconductor fusing
Dimensions
• 7.3 in. (185 mm) high x 2.6 in. (66 mm) wide x 9.4 in.
(239 mm) deep
• Weight: 6.5 lb (2.95kg)
Specifications are subject to change without notice.
Output Rating Curve
DIN-A-MITE Style D Natural Convection Ratings at 100% On
85
Max. Internal Enclosure
Ambient Temperature (˚C )
Specifications
80
75
70
65
60
55
50
45
40
35
30
25
0
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105
Current (Amperes) Into a Resistive Load
WATLOW®
321
Power Switching Devices
DIN-A-MITE D
Ordering Information
Part Number
①
D
②
D
Phase
④
Cooling
& Current
Rating
1
0
③
③
1=
-
⑤ ⑥
Line &
Load
Voltage
⑦⑧
Control
Phase
1-phase, 1 controlled leg
Cooling and Current Rating (See rating curve)
④
0= Natural convection
⑤ ⑥
Line and Load Voltage
02=
24 =
48 =
60 =
24 to 48VAC
120 to 240VAC
277 to 480VAC
277 to 600VAC
⑦⑧
C0=
F0=
K1=
K2=
K3=
Control
4.5 to 32VDC input, contactor output
4 to 20mA DC input, variable time-base output
22 to 26VAC input, contactor output
100 to 120VAC input, contactor output
200 to 240VAC input, contactor output
-
⑨
Current
Sensing
or Alarm
⑩
⑪ ⑫
User
Manual
Custom
Options
⑨
Current Sensing or Alarm
0= No alarm
1= Load current transformer
S= Shorted SCR alarm
⑩
0=
1=
2=
3=
User Manual
English
German
Spanish
French
⑪ ⑫
Custom Options
00 = Standard part
Replacement Semiconductor Fuse
Watlow Part Number
0808-0096-0000
322
Cooper Bussmann®
Part Number
170N3437
WATLOW®
Power Switching Devices
POWER SERIES™
Watlow has manufactured solid state power controllers
for over forty years. Watlow’s POWER SERIES™ is a
microprocessor-based product that f­eatures application
flexibility unmatched by any other silicon controlled
rectifier (SCR) power controller on the market today.
Watlow’s POWER SERIES controllers include single
and three-phase models from 65 to 250 amperes. Field
­configurable phase-angle or zero-cross firing improves
­application flexibility on site where needed.
50/60Hz ­independent operation allows utilization
almost everywhere in the world without special calibration
­considerations. Serial communication via Modbus® RTU
allows setup and monitoring of load­­­­­­­­ status from a
computer station or control room.
On-board semiconductor fusing improves reliability by
­ rotecting the SCRs from heater short circuits. Plus,
p
on-board heater bakeout and control diagnostics can
help eliminate ­initial start up problems. All these benefits
are in a touch-safe package that can be quickly and
easily mounted in a control cabinet.
Watlow’s POWER SERIES controllers are UL® and
C-UL® listed, ensuring that they meet world safety and
operational standards.
WATLOW®
Features and Benefits
200KA short circuit current rating (SCCR)
• Minimizes damage in the event of a short circuit
Microprocessor-based technology
• Extremely versatile and field configurable
Snap-fit on a pre-mounted plate
• Simplifies installation
Models 65 through 250 amperes rating
• Handles a wide range of loads
UL® 508 listed, C-UL® and CE with filter
• Meets applications requiring agency approval
Adjustable soft start
• Provides application flexibility
Heater and control diagnostics capability
• Monitors actual heater and controller performance
Electrically touch-safe package
• Enhances safety for installer and users
Serial communications with Modbus® RTU protocol
• Provides computer control and/or monitoring
Multizone capability
• Increases application flexibility and reduces
panel space
323
Power Switching Devices
POWER SERIES
Specifications
Power Bases
• Single-phase, (2 SCRs)
• 3-phase, 2-leg control, (4 SCRs)
Resistive load only, zero-cross firing only
• 3-phase, 3-leg control, (6 SCRs)
• 3-phase, 3-leg control, (6 SCRs) for 4-wire wye loads
• Multizone, two and three single-phase zones
Output Control Options
• Zero-cross control, fixed time base
• Time base one or four seconds with digital
programmer
• Zero-cross control, variable time base
• Phase-angle control and phase-angle control with current limit (not for 3-phase, 2-leg models)
• Soft start factory default four seconds upon
power-up, and adjustable from 0.0 to 120 seconds
• Soft start upon input signal change, output rate of change adjustable to limit max. rate of change from 0.1 to 100% per 0.1 second. Factory default 10%
• Current transformer included when required
• Line voltage compensated (variable time base and phase angle controllers only)
• Standby or non-operational mode
Output Voltage and Current Rating
• 24 to 120VAC (+10%, -15%)
• 200 to 480VAC (+10%, -15%)
• 200 to 600VAC (+10%, -15%)
• 65 through 250A per pole, model dependent; see Amperage Chart with Ordering Information
• Min. load 1A rms ac
• Max. leakage current 5mA
• 200KA SCCR, Type 2 approved with the
recommended fusing; see user manual
Alarms
• Single alarm relay
• Latching or non-latching
• Separate high and low values
• Alarm silencing (inhibit) on power up for alarm
• Alarm indication LEDs, shorted SCR, open heater, fuse
• Electromechanical relay, Form C contact, software
configurable
• Min. load current 10mA @ 5VDC
• Rated resistive loads: 3A @ 250VAC or 30VDC max., inductive load rating 1.5A with a power factor
≥ 0.4 without contact suppression
Heater Bakeout
• For single-phase (phase to neutral) and 3-phase 6 SCR models only (not for 3-phase, 2-leg models)
324
• Soft start with over current trip, runs until programmed
bakeout time expires, then goes burst or phase-angle firing. Factory default of 24 hours
• Adjustable 0 - 9999 minutes with over-current trip
• Internal current transformer included
Command Signal Input
Analog
• Input signal: field selectable and scalable, 0 to 20mA or
0 to 10VDC
• Default input signal: 4 to 20mA
• Manual control input via digital programmer/display
• Voltage input impedance 11kΩ nominal
• Current input impedance 100Ω nominal
Digital
• On-board digital programmer/display and optional serial communications
Retransmit
• Field selectable and scalable, 0 to 20mA with
800Ω max. load or 0 to10VDC with 1KΩ min. load
• Default: 4 to 20mA
• Resolution:
mA ranges = ±5µA
VDC ranges = 2.5mV nominal
• Calibration accuracy:
mA ranges = ±20µA
VDC ranges = 10mV nominal
• Temperature stability: 100ppm/°C
Digital Programmer/Display and Communications
Capabilities
• Programming functions
• Adjust input and output control type, alarms and soft start, heater bakeout and current limit prompts
• Monitoring functions
• Display input and output values along with actual
output current
• Data retention of digital programmer/display upon power failure via nonvolatile memory
Serial Communications
• RS-232 for single drop control
• EIA-485 for single or multidrop control
• 32 units maximum can be connected. With additional 485 repeater hardware, up to 247 units
may be connected
• Isolated
• Modbus® RTU protocol
• 1200, 2400, 4800, 9600, 19200 baud rates
Controller Power Supply
• Universal line voltage input range 100 to 240VAC
(+10%, -15%) at 55VA max.
• 50/60Hz ± 5% line frequency independent
• Controller line voltage for electronic power supply can be run on separate line voltage
WATLOW®
Power Switching Devices
POWER SERIES
Specifications (Continued)
Dimensions (Output Amperage Ratings:
N20, N25, N30, F20, F25 or F30)
Natural Convection and Fan Cooled Models
• Cabinet venting may be required
Front ViewPower Series Front View
Power Series Front View
• See Amperage Chart with Ordering Information for available configurations
1
2
3
Power Dissipation (Watts)
1
2
3
• Approximately 1.25 watts/ampere per controlled leg
Isolation
• Command signal to load and line/load to ground
POWER SERIES
2200VAC min.
Solid State
Power Controller
POWER
SERIES
14 in.
Solid State Power Controller
• On-board semiconductor fuses provide SCR protection
354
mm
14 in.
354 mm
Mounting
• Output Amperage Rating F35: back panel
• Other Output Amperage Ratings: removable mounting plate
High Current Terminals
• Touch safe
4
5
6
4
5
6
• 3/8 in. (10 mm) Allen head compression terminals will accept 6 AWG to 350 MCM wire. Allen wrench
Top View Power Series Top View
adapter (included) for 3/8 in. (10 mm) socket, 6 point Power Series Top View
only
• Torque to 180 in.-lbs (20.3 Nm)
• Wire strip to 11/8 in. (30 mm)
• Requires 194°F (90°C) wire insulation rating on line
7.9 in.
and load terminals
200
mm
7.9 in.
200 mm
Controller Terminals
• Touch safe
• 1/8 in. (2.5 mm) blade screwdriver, accepts
12-22 AWG or 2 ea. 22-18 AWG wires
• Torque to 8 in.-lbs (0.9 Nm)
7.5 in.
191
mm
7.5 in.
• Wire strip to 0.24 in. (6 mm)
191 mm
Operating Environment
Mounting Plate
• 122°F (50°C) base rating
Release Tab
• 32 to 140°F (0 to 60°C) fan cooled
• 32 to 149°F (0 to 65°C) natural convection cooled
• 0 to 90% RH, non-condensing
Mounting Holes (4)
• Meets EN50178, Pollution degree three
0.27 in. (7 mm)
Storage Temperature
• -40 to 185°F (-40 to 85°C)
Shipping Weight
• Output Amperage Rating F35: 38 lbs (17.2 kg)
• Other Output Amperage Ratings: 23 lbs (10.3 kg)
Key Slots
7.00 in.
Agency Approvals
(178 mm)
• UL® 508 listed, File #E73741, Vol. 3, Sec. 2
• C-UL® listed to C22.2 NO. 14
• CE 2004/08/EC (EN61326-1), Class A with filter,
CE 2006/95/EC (EN50178)
1.53 in.
(39 mm)
4 in.
(102 mm)
0.97 in.
(25 mm)
5.93 in.
(151 mm)
WATLOW®
325
Power Switching Devices
POWER SERIES
13.3 in.
(337 mm)
Dimensions (Output Amperage
Rating: F35)
12 in.
(305 mm)
0.28 in.
(7.1 mm)
Power Series
Solid State Power Control
9.2 in.
(234 mm)
16.6 in.
(421 mm)
14 in.
(356 mm)
7 in.
(178 mm)
7.5 in.
(191 mm)
Bottom View
Mounting Flange
(Already Installed)
Single-Phase Configuration
This configuration can be purchased with any or all the
features available on the POWER SERIES, based on
customer preference. It is intended for resistive heaters,
but can also be used on transformer connected loads in
the phase angle firing mode.
Three-Phase, Two Leg Configuration
This configuration is intended for zero cross firing only
into a stable resistive heater. Typically, a three-phase
delta or ungrounded wye connected heater is used and
only two of the three VAC line phases are switched. The
third phase is a direct connection through a bussbar on
board the POWER SERIES. Heater current monitoring
and kVA options are available via the heater diagnostics
option.
Three-Phase, Three-Leg Configuration
All POWER SERIES options are available with this
configuration. It works well with phase angle firing into a
three-phase, three-wire wye or delta connected heater.
In this configuration, the more common applications are
transformer connected loads with heaters requiring a soft
start and/or current limiting.
The three-phase, four-wire configuration is intended for
zero cross firing into a three-phase grounded wye/star
heater (This is a separate hardware option, model
number dependent.)
326
Front View
1.3 in.
(33 mm)
Single-Phase, Multizone Configuration
This configuration is available in two and
three
Jason
Houzenga
single-phase zones and all the features of a4/27/2011
single-phase
unit are available. (Note that there is only one alarm relay
and all zones in the controller must use the same control
method.)
Heater Diagnostics
Heater diagnostics may include some or all of the
features that require heater current monitoring, depending
on the model selected. Heater current monitoring is only
available with heater diagnostics installed on the
controller. The features dependent on heater current
monitoring are heater bakeout, current limiting, heater
kVA monitoring, retransmit and heater monitoring alarms
such as open heater, heater out of tolerance, load
balance and shorted SCR detection/error. Heater
diagnostics must also be installed if you need phase
angle control with current limit.
WATLOW®
Power Switching Devices
POWER SERIES
Ordering Information
Part Number
①②
③
④
Phase
Heater
Diagnostics
⑤⑥⑦
Output
Amperage
Rating
⑧
Output
Voltage
Rating
-
PC
③
⑨
⑩
⑪⑫
Comm.
Feedback/
Retransmit
Custom
-
Phase
Output Voltage Rating
⑧
1=
1-phase
A=
24 to 120V
2=
3-phase/2-leg control, (4 SCRs), zero cross only
B=
200 to 480V
3=
3-phase/3-leg control, (6 SCRs)
C=
200 to 600V
4=
3-phase/4-wire, wye connected load
8=
2 single-phase zones
9 =
3 single-phase zones
④
0=
1=
Heater Diagnostics
None
Heater diagnostics (required for any heater current
monitoring or current limiting
⑤⑥⑦
None
EIA/TIA-232/485 communications, opto-isolated,
(field selectable)
⑩
0=
1=
Output Amperage Rating
See amperage chart below
Feedback/Retransmit
None
Load current feedback (0-10V or 0-20mA scalable
retransmit output) (Must have heater diagnostics selected)
Custom
⑪⑫
POWER SERIES Features
Removable Mounting Plate
Power Series snaps on a premounted, removable subplate.
1
Communications
⑨
0=
1=
2
3
Terminal Cover
Electrically touch-safe
package.
00 =
None
AA =
No Watlow logo with agency approval marks
XX=
Custom, contact your Watlow representative for options
Amperage Chart—122˚F (50˚C)
Ground Lug
Built in, designed for easy
ground connections.
Single-Phase
Code
I/O Port
Input, retransmit
output, communications
and alarms.
Fuse Cover
Slides up and down for fuse
maintenance and covers the
high voltage components.
On-Board Fan
A fan is integrated into
the package on forced
air cooled models to
eliminate separate power
connection for fan.
Digital Programmer/Display
For controller configuration,
setup and monitoring features.
4
5
6
Allen Wrench
Used to torque terminals
one to six and ground lug.
Non
Fan
Cooled
Fan
Cooled
Amp
3-Phase, 2-Leg
and 2 SinglePhase Zones
3-Phase, 3-Leg,
3 Single-Phase
Zones and
4-Wire Model
Code
Code
Amp
Amp
N20
100A
N20
80A
N20
65A
N25
140A
N25
105A
N25
85A
N30
165A
N30
120A
N30
105A
F20
125A
F20
120A
F20
90A
140A
F25
200A
F25
160A
F25
F30
250A
F30
185A
F30
155A
N/A
N/A
F35
250A
F35
225A
Note: For current ratings at other temperatures see the rating curves in
the POWER SERIES User’s Manual available at www.watlow.com.
Replacement Fuses for Power Series
Watlow Part Number
WATLOW®
Description
Bussmann Part Number
0808-0102-0100
100 amp @ 600VAC
170M1317
0808-0102-0125
125 amp @ 600VAC
170M1318
0808-0102-0160
160 amp @ 600VAC
170M1319
0808-0102-0200
200 amp @ 600VAC
170M1320
0808-0102-0250
250 amp @ 600VAC
170M1321
0808-0102-0315
315 amp @ 600VAC
170M1322
327
Power Switching Devices
QPAC
The QPAC SERIES from Watlow is a modular Silicon
Controlled Rectifier (SCR) power controller with plug-in
features for flexibility. Bases are rated from 150 to 1000
amperes in one-phase, three-phase, two leg and
three-phase, three leg.
A variety of transformers from 120 to 575VAC along
with 50/60Hz operation enable the QPAC to operate in
applications anywhere. Plug-in control cards set the
QPAC’s SCR firing modes; solid state contactor, burst
firing (zero cross) or phase-angle models are available with
a wide variety of options. This power controller includes
200KA short circuit current rating (SCCR) and high speed
fuses to minimize damage in the event of a short circuit.
Features and Benefits
200KA short circuit current rating (SCCR)
• Minimizes damage in the event of a short circuit
Modular power controller
• Unit base can be fitted with a variety of plug-in transformers and control cards
Available in 150 to 1000 ampere ratings
• Handles large or small loads
Available in solid state contactor, burst firing
(zero cross) or phase-angle fired mode
• Meets most application requirements
Rugged design for 122°F (50°C) ambient operation
• Full rating of the power controller can be used in industrial applications
Semiconductor fuses and snubber protection
included
• Protects the SCR from voltage or current surges
or spikes
Open heater or shorted SCR detector option
• Diagnostic capabilities
UL® 508 listed and C-UL® up to 1000 amperes
• For applications requiring agency approvals
328
Typical Applications
• Furnaces and ovens
• Petrochemical
• Heat treating
• Duct heating
• Environmental chambers
• Kilns
WATLOW®
Power Switching Devices
QPAC
Specifications
Operation
Modular controller base with plug-in card and
transformer
• Plug-in control cards
Solid state contactor, dc input
Burst fire control, fixed or variable time base
Phase-angle fire control
Phase-angle control with soft start and current limiting
• Plug-in transformers (50/60Hz)
• 120, 208, 240, 380, 415, 480, 575VAC operation
Power bases
• 1-phase (Q01), 1 pair of SCRs
• 3-phase (Q32), 2 leg control, 2 pair SCRs
Resistive load only, burst firing only
• 3-phase (Q33), 3 pair hybrid SCRs/diodes
Recommended for phase-angle only with
balanced load
Agency Approvals
•UL® 508 and C-UL® listed, 150 to 300A all
configurations, File #E73741
•UL® 508 and C-UL® listed, 400 to 1,000A on Q01 and Q32, up to 480VAC
Control Card Inputs
(CD) Solid state contactor, dc input
• On, 4-32VDC; off, 0.5VDC
• Built-in noise reduction network
(BF) Burst firing control fixed time base
• Process input factory set @ 4-20mA DC
• Input impedance 250Ω (clip resistor for 5kΩ
impedance voltage input), or manual control input
• Time base 4 seconds (clip resistor for 1 sec)
(BV) Burst firing control, variable time base
• Process input factory set @ 4-20mA DC
• Input impedance 250Ω (clip resistor for 5kΩ
impedance voltage input), or manual control input. Requires an accessory bias and gain card to calibrate for 0-5VDC input.
(AF) Phase-angle control
• Process input factory set @ 4-20mA DC
• Input impedance 250Ω (clip resistor for 5kΩ
impedance voltage input), or manual control input
• Soft start approximately 6 seconds upon power-up,
1 second upon set point change
(AL) Phase-angle control with current limit
• Process input factory set @ 4-20mA DC
• Input impedance 250Ω (clip resistor for 5kΩ
impedance voltage input), or manual control input
• Soft start approximately 10 seconds upon power-up,
1 to 2 seconds upon set point change
• Current transformer included
Open Heater/Shorted SCR Detector
• Zero cross/burst fire models only
• Triac output
• 24 to 240VAC, 300mA @ 77°F (25°C), 125mA @
176°F (80°C)
• Energizes on alarm
• Holding current 200µA min.
• Latching current 5mA typical
Outputs
• 120 through 575VAC
• 1, 2 or 3 pole
• 150 to 1000A per pole
• SCCR, 200KA with original equipment specified
semiconductor fusing
Line Voltage / Power
• 50/60Hz ac line frequency, Q32 and Q33 models are 50/60Hz calibration dependent
• Voltage: ±10%, 120, 208, 240, 277, 380, 415, 480, 575VAC
Line Voltage Compensation
• 10% ∆ in line, 2% ∆ in load in the 30 to 70% power region (AF, AL and BV)
Power Dissipation (Watts)
• 1.5 W/A per controlled leg
Isolation
• Command signal to load 1250VAC min.
Linearity
• 2%, 30 to 70% power region (All units except CD)
Off-State Leakage Current
• 20mA @ 480VAC
SCR Protection
• Semiconductor fuses provided dv/dt 200V/µsec min.
•MOV① and RC snubber network standard
• (Q32) 3rd leg fuse kit may be used, but not required, with 3-phase, 2 leg models
Mounting
• Heat sink fins must be mounted in vertical orientation
①MOV
WATLOW®
comes only on Q33 (3-phase, 3 leg).
329
Power Switching Devices
QPAC
Specifications (Continued)
Case Styles
Operating Environment
• 32 to 122°F (0 to 50°C)
• 0 to 90% RH, non-condensing
• 2,000 meters altitude
Storage Temperature
• -40 to 185°F (-40 to 85°C)
Options
• Manual Control Kit for process input cards
(1kΩ potentiometer) #08-5362
• 240VAC and 120VAC cooling fans
Height
Height
Depth
Phase
Width
Style C
1Ø/Q01
lb(kg)
3Ø, 2-leg/Q32 3Ø, 3-wire/Q33
lb (kg)
lb (kg)
150
15(6.8)
36 (16.3)
50 (22.7)
200
15(6.8)
36 (16.3)
50 (22.7)
Amps
Depth
Width
QPAC Weight Chart
Style E
QPAC Dimensions
Q01
Height (H) Width (W) Depth (D) in. (mm)
in. (mm)
in. (mm)
300
15(6.8)
36 (16.3)
50 (22.7)
400-600
44(20.0)
85 (38.5)
100
(45.4)
C
150
13 (330)
6.9 (175)
10.25 (260)
800-1000
49 (22.2)
120
135
(61.2)
C
200
13 (330)
6.9 (175)
10.25 (260)
C
300
13 (330)
6.9 (175)
10.25 (260)
E
400-600
27 (685)
17 (430)
11.7
(300)
E
800-1K
27 (685)
17 (430)
13.3
(340)
(54.4)
Style
Amps
Q32
Style
Amps
Height (H) Width (W) Depth (D) in. (mm)
in. (mm) in. (mm)
C
150
13 (330)
13.7 (350)
10.25 (260)
C
200
13 (330)
13.7 (350)
10.25 (260)
C
300
13 (330)
13.7 (350)
10.25 (260)
E
400-600
27 (685)
21
(535)
11.7
(300)
E
800-1K
33 (840)
21
(535)
13.3
(340)
Q33
Style
330
Amps
Height (H) Width (W) Depth (D) in. (mm)
in. (mm) in. (mm)
C
150
13 (330)
20.7 (525)
10.25 (260)
C
200
13 (330)
20.7 (525)
10.25 (260)
C
300
13 (330)
20.7 (525)
10.25 (260)
E
400-600
33(840)
27
(685)
11.7
(300)
E
800-1K
33 (840)
27
(685)
13.3
(340)
WATLOW®
Power Switching Devices
QPAC
Applications Sketch
Wiring Example
Plug-in
Transformer
L1
L2
Fuse
Fuse
L3
Fuse
L1
Plug-in
Control
Card
T1
L2
T2
L3
T3
Control Card
Power Base
Transformer
Fan Must Be Wired
to 120VAC
Command
Signal
Fan
Fan
Fan
Q33-481-150-AFO
In heat treating applications, the QPAC offers modular
flexibility. Different heater elements require different control
firing modes, for example, tungsten elements need
phase-angle firing, while Nichrome® elements use burst
(zero cross) firing.
Shipping the furnace to different countries could require
different voltage sources (and thus transformers): i.e., U.S.
240 or 480 volt, Australia 415 volt; Europe 380 or 400 volt.
By simply changing plug-in transformers, the OEM can ship
anywhere in the world.
WATLOW®
Accessories
Manual
150A
200A
300A
400A
500A
600A
800A
1,000A
5A
Control Kit
08-5362
: 5A Current Transformer
16-0008
: 5A Current Transformer
16-0045
: 5A Current Transformer
16-0073
: 5A Current Transformer 0004-0286-0400
: 5A Current Transformer 0004-0286-0500
: 5A Current Transformer 0004-0286-0600
: 5A Current Transformer 0004-0286-0800
:
5A Current Transformer 0004-0288-1000
:20mA Interstage Transformer
16-0176
331
Power Switching Devices
QPAC
Ordering Information
QPAC - Modular power controller; phase, burst or solid state contactor, fuse(s) and holder(s) included.
Part Number
②③
①
④⑤
Operating
& Output
Voltage
Phase
Q
⑦⑧ ⑨
Output
Control
(Amps)
⑥
Cooling
Fan
Voltage
-
-
⑩⑪
Input
Control
Card
⑫
Open Heater/
Shorted SCR
Detector
-
② ③ Phase
⑩ ⑪ Input Control Card
01=
1-phase
CD=
Solid state dc input (08-5286) contactor
32=
3-phase, 2-leg (Optional 3rd leg fuse kit extra)
BF=
Burst fired, fixed time base (08-5289) 4-20mA dc
33=
3-phase, 3-leg
BV=
Burst fired, variable time base (08-5342) 4-20mA dc
AF=
Phase-angle fired, not available on Q32 (08-5288) 4-20mA dc
Phase-angle fired w/current limit (08-5411) 4-20mA, not available on Q32. AL option includes one current
transformer. Add second CT for 3-phase, 3-leg
④ ⑤ Operating and Output Voltage
20=
120VAC
208VAC
24=
240VAC
27=
277VAC
38=
380VAC
41=
415VAC
48=
480VAC
57=
575VAC
12=
⑥ Cooling Fan Voltage
1=
2=
120VAC; required on all 3-phase models
240VAC; required on all 3-phase models
AL=
⑫ Open Heater/Shorted SCR Detector
1=
None
1-phase operation
2=
3-phase operation
0=
Notes:
•The open heater/shorted SCR detector is for burst fire operation
only.
•Includes one current transformer for 1-phase and two current
transformers for 3-phase.
Notes:
•Customer to supply wiring and hook-up.
•All cooling fans rated at 20 W each, must be wired by customer.
⑦ ⑧ ⑨ Output Control (Amps)
200=
150A
200A
300=
300A
400=
400A
500=
500A
600=
600A
800=
800A
01k=
1000A
150=
332
WATLOW®
Power Switching Devices
E-SAFE® II
The E-SAFE® II hybrid power switch provides reliable and
accurate power switching up to 35 amperes at 158°F
(70°C). This mercury-free product is specifically designed
to operate in the higher ambient temperatures of
foodservice applications.
Utilization of mercury relays is being eliminated due to
many regulations affecting its use in the United States
and around the world. The E-SAFE II is the best
performing product at the most economical price.
Because of the product’s unique design, there is no
need to purchase costly heat sinks used with traditional
solid state relays (SSRs). In addition, since this is a
three-phase device, there is no need to wire multiple
command signals. With a switching life of millions of
cycles and an ambient rating of 158°F (70°C), with
no heat sink required, this product is superior to
typical SSRs.
The E-SAFE II hybrid power switch provides foodservice
operators with longer contact life and higher performance
than typical mechanical contactors used in equipment.
By using Watlow’s patent NO-ARC technology, the
E-SAFE II can switch millions of cycles to increase the
life of the product with reduced noise and increased
temperature accuracy. E-SAFE II’s inherent ability
to operate at fast cycle times makes it an ideal
complementary product for a time, proportional,
integral derivative (PID) controller.
E-SAFE II is mercury free, RoHS compliant by design,
CE approved and C-UL®/UL® recognized. The reliability
of the product is protected by a two-year warranty.
WATLOW®
Features and Benefits
Mercury free
• Improves safety by eliminating risk of toxic metals in proximity to food
• Adheres to federal and state regulations phasing out and banning mercury
High ambient temperature rating of 158°F (70°C)
• Specifically designed to operate in the higher ambient temperatures of foodservice applications
NO-ARC hybrid power switch technology
• Combines the current carrying capacity of mechanical contacts with the longevity of solid state technology
• Allows faster cycling times than mechanical contactors
• Delivers more precise temperature control, saves energy, extends heater life and decreases total cost
of ownership
Compact and touch-safe package
• Fits in shallow foodservice cabinets
• Allows for horizontal or vertical mounting installations
• Increases safety for installer/operator
• Uses Ultem® enclosure material with a horizontal burn rating (HB) rating of 338°F (170°C) and a UL® flame retardant rating of 94 5VA
RoHS compliant by design
• Specifically designed to meet Asian and European requirements
LED indicator light
• Indicates command signal presence from controller
• Assists in troubleshooting
Agency approvals
• UL® recognition, C-UL® and CE
• WEEE compliant
333
Power Switching Devices
E-SAFE II
Specifications
Output voltage
• 200/240VAC +10/-15%, 50/60Hz, 100/120VAC
+10/-15%, 50/60Hz
Output amperage
• Up to 35A single, dual and three-phase
Operating environment
• 32 to 158°F (0 to 70°C) operating temperature
• 0 to 90% RH (relative humidity), non-condensing
• Operational life: four million switching cycles
• Installation category III, pollution degree 2
Control mode
• NO-ARC hybrid contactor
Input command signal
• 3 to 32VDC, 24VAC +20/-20%, off state ≤2.7VDC
• 100 to 240VAC +10/-15%, (85 to 264VAC)
Note: On the 100 to 240VAC input models, do not use a RC snubber on the E-SAFE II relay input or the temperature control command signal output
LED indicator light
• Built in LED assists in troubleshooting; LED “off” indicates relay(s) are open, LED “on” indicates relay(s) are closed.
Input command signal terminals
• 1/4 in. fast on appliance
Line and load terminals
• No. 10 screw will accept ring or spade,
1/4 in. (6.35 mm) x 10-32
Mounting
• Back panel mount, horizontal or vertical mounting options
334
Dimensional Drawings
0.25 in.
(6.35 mm)
3.82 in.
(97.03 mm)
3.25 in.
(82.55 mm)
0.586 in.
(14.88 mm)
1.910 in.
(48.51 mm)
5.54 in.
(140.72 mm)
1.85 in.
(46.99 mm)
0.94 in.
(23.88 mm)
WATLOW®
Power Switching Devices
E-SAFE II
Product Rating Curve
70
6 AWG
90°C Wire
65
90
°C
50
AW
G
45
40
35
8 AWG 90°C Wire
W
ire
55
10
Ambient Temperature °C
60
30
25
5
10
15
20 25
Amperage
These ratings apply to
3-phase units with cycle
times of 30 seconds or
more. Consult the factory
for 1- and 2-phase unit
ratings.
UL® Conditions of Acceptability
Applications must be tested as described below for specific wire
insulation or specific wire gauge sizes. Tests shall be performed in
the end application under worst case operating conditions.
Test Procedure
A. Monitor temperatures of terminals, using thermocouples between the
ring terminal and connectors L1, L2 or L3. The temperature must not
exceed 203°F (95°C).
B. Monitor temperatures of wire insulation, using a thermocouple located
three inches from the connector. The temperature must not exceed the
insulation rating of the wire.
*30A is maximum rating when operating above 240VAC.
Warning: Thermocouples attached to terminals will be at load voltage
potential, measurements need to be taken with isolated equipment or
isolate the sensor from terminal with suitable insulation.
30* 35
Ordering Information
Part Number
① ②②③
①
④
⑤
Number
of Poles
Load
Voltage
ES2
④
1=
2=
3=
-
⑥⑦
Command
Signal
Voltage
⑧
⑨
⑩⑪⑫
Future
Option
Future
Option
Custom
Options
0
-
0
Number of Poles
1 pole
2 poles controlled
3 poles controlled
Load Voltage
⑤
1= 100 to 120VAC
2= 200 to 240VAC
3= 230/277VAC (400/480VAC with wye/star, neutral connected to
center required)
Command Signal Voltage
⑥ ⑦
LV= Low voltage 3 to 24VDC or 24VAC
HV= High voltage 100 to 240VAC +10/-15% (85 to 264VAC)
⑩⑪⑫
Custom Options
000= Standard product
Any three letters or numbers = cosmetic options
WATLOW®
335
Power Switching Devices
SERIES CZR
The SERIES CZR solid state relay provides a low-cost,
highly-compact and versatile solid state option for
controlling electric heat. With DIN-rail and back panel
mounting standard on every controller, the CZR allows
for simple and quick installation.
The extensive capabilities of the SERIES CZR include
single-phase, 18 to 42 ampere zero-cross switching
up to 600VAC (see output rating curve). Its unique
integrated design removes the guesswork associated
with selecting a proper heat sink and precise terminations
for the application.
This controller holds many agency certifications and
is ideal for applications that require UL®, CSA and CE
approvals. The SERIES CZR is available in VAC/VDC
input contactor versions and all configurations are model
number dependent and factory selectable.
The SERIES CZR is protected by a two-year warranty.
Features and Benefits
DIN-rail or standard panel mount
• Versatile, quick and low-cost installation
Compact size
• Reduces panel space and cost
Touch-safe terminals
• Increases installer and operator safety
Mercury free
• Environmentally safe
Faster switching with solid state
• Saves energy and extends heater life
UL® 508 recognized, CSA LR700195 certified and
CE 60950
• Applications requiring agency approval
Back-to-back SCR design
• Offers rugged design for different application environments
336
WATLOW®
Power Switching Devices
SERIES CZR
Specifications
Control Mode
• Zero-cross fired contactor output
Operator Interface
• Command signal input
• Input signal indication LED
Input Command Signal
• Input Type DC1
• Turn on voltage 4VDC max., turn off voltage
1VDC min.
• Input current: dc typically 10mA @ 4VDC,13mA @ 32VDC
• Input Type AC1
• 90 to 140Vrms, must turn on at 90VAC, must turn off at 10VAC
• Input current: 15mA typical @ 120VAC
Output Voltage
• 24V; 24VAC min. to 280VAC max.
• 480V; 48VAC min. to 530VAC max.
• 600V; 48VAC min. to 660VAC max.
• Off state leakage
1mA at 77°F (25°C) max. for 600VAC models; 10mA at 77°F (25°C) max. for 24 through 480VAC models
• Holding current: 250mA max.
Output Amperage
• See output rating curve. Ratings are into a resistive heater load.
Output Amperage Rating
Model
18
24
34
42
Max. Surge
Current 16.6
mSec
625
250
625
1000
Max. I2t Fusing
1620
260
1620
4150
Output Terminals
• Compression type
• For 18A models:
• Max. wire size 3.0 mm (10 AWG), torque to
0.6Nm (5.3 in. lbs)
• For 24 to 42A models:
• Max. wire size 16.0 mm (6 AWG stranded) torque to
1.5-1.7Nm (13-15 in. lbs)
Operating Environment
• Up to 176°F (80°C). See output rating curves for
applications
• 0 to 90% RH (relative humidity), non-condensing
• Insulation tested to 3,000 meters
• Units are suitable for “pollution degree 2”
• Cycle time should be less than 3 seconds
Mounting
Options include DIN-rail or standard back panel
mounting.
• The DIN-rail specification: DIN EN 50022, 1.38 in. x 0.30 in. (35 mm x 7.5 mm)
• Min. clipping distance: 1.37 in. (34.8 mm)
• Max. clipping distance: 1.39 in. (35.3 mm)
• Mount cooling fins vertical
Weight/Dimensions
• 9.2 oz (260g)
• 24 to 42A models: 3.95 in. (100 mm) high x 1.75 in. (45 mm) wide x 4.3 in. (109 mm) deep
• 18A models: 3.95 in. (100 mm) high x 0.89 in.
(22.6 mm) wide x 3.9 in. (99 mm) deep
Agency Approvals
• Class II construction
• UL® 508 recognition, File #E73741 and
CSA File LR 700195
• 2006/95/EC Low Voltage Directive
WATLOW®
337
Power Switching Devices
SERIES CZR
Ordering Information
Part Number
①
②
③ ④
Control
Mode
Output
Amperage
Z
C
②
⑤
-
⑥ ⑦
⑨⑩⑪
⑧
Output
Voltage
V
A
-
⑫
Input Type
(Contactor)
0
Control Mode
Z=
Zero cross
③ ④
18=
24=
34=
42=
Output Amperage
18A
24A
34A
42A
⑥ ⑦
24= 24 to 280VAC
48= 48 to 530VAC
60= 60 to 660VAC
Output Voltage
⑨⑩⑪
Input Type (Contactor)
DC1= 4 to 32VDC
AC1= 90 to 140VAC
Note: Do not use the AC1 input type with temperature controller
outputs that include an AC snubber filter. This could cause the
SERIES CZR to stay full on.
Output Rating Curve
Maximum Ambient Temperature ºF
70
50
68
86
104
122
140
158
176
60
Current (Amps)
50
40
30
20
CZ34
CZ24
10
CZ18
0
338
CZ42
10
40
50
70
30
60
20
Maximum Ambient Temperature ºC
80
WATLOW®
Power Switching Devices
Solid State Relays (SSR)
Watlow solid state relays (SSR) offer many of the
advantages of solid state power controllers, yet at a
lower cost. Watlow’s extensive knowledge in power
controller design has led to the development of a special
fast cycle input card that enables a SSR to operate
from a standard 4-20mA instrumentation command
signal. Test results have shown that a zero cross SSR
in combination with the fast cycle card promotes better
temperature control and longer heater life than slow
cycle relays. Through a time proportional cycle rate of
one tenth of a second heater life will be extended.
Both low and high voltage models are available from
24 up to 530VAC. All ac output models include
back-to-back Silicon Controlled Rectifiers (SCRs) for a
more rugged design than the traditional triac based SSR.
The internal design allows it to handle high currents
and the harsh electrical environments of heavy industry.
Watlow also offers a switched VDC model for dc heating
applications.
Watlow can provide all the components necessary
for trouble-free operation. This includes two standard
convenience items: a thermal foil to ensure proper
thermal transfer from the relay to the heat sink and
belville washers that ensure the relay is mounted with
sufficient pressure for good heat transfer. Matched
semiconductor fuses and heat sinks are available to
complete the power switching package.
WATLOW®
Features and Benefits
Fast cycle card
• Increases heater life
• Optimizes temperature control
• Allows for higher watt density heaters
Zero cross firing
• Results in minimal electrical noise
Back-to-back SCR design
• Withstands harsh or hostile industrial environments
UL® recognized File #E151484 and #E73741
CSA certified up to 600VAC, File #LR700195
VDE 60950 License #40021401, File #1995500
up to 480VAC, CE - EN60950
• Meets applications requiring agency approval
339
Power Switching Devices
Solid State Relays
Ambient Temperature Operating Curve
Specifications
85
Specifications Standard To All SSRs:
R-
Ambient temperature inside enclosure
3 inches left or right of the heatsink (ºC)
A-
XX
70
X
an
dZ
10
65
0-
08
15
-0
00
C
He
at
sin
60
55
50
45
40
35
1.5VAC and 2.1VDC
50mA
up to 10ms (max.)
47 to 63Hz
75
30
25
5
10
15
20
SSR-XXX-75A-XXX and
Z100-0815-XXFC Heatsink
k
SSR-XXX-50A-XXX and Z100-0815-000C Heatsink
90-280VAC
2mA (typical) @ 120VAC
4mA (typical) @ 240VAC
90VAC
10VAC
X-
SSR-XXX-25A-XXX and Z100-0815-000B Heatsink
3-32VDC
3.4 to 20mA
3VDC
1VDC
XX
75
SSR-100-20A-DC1 and Z100-0815-000B Heatsink
Turn on voltage (max.)
Turn off voltage (min.)
AC Output (Max.)
Forward voltage drop
Min. holding current (mA)
Turn on-off time (ms)
Frequency range
4000 RMS
SSR-240-10A-XXX and Z100-0815-000A Heatsink
Dielectric Strength (Volts)
Input, DC Control
Voltage range
Typical input current
Turn on voltage (max.)
Turn off voltage (min.)
Input, AC Control
Voltage range
Typical input current
SS
80
25
30
35
40
45
50
55
60
65
70
75
Load Current (Amperes)
120/240VAC
Model Number
SSR-240-10A-DC1 SSR-240-25A-DC1 SSR-240-50A-DC1 SSR-240-10A-AC1 SSR-240-25A-AC1 SSR-240-50A-AC1
Current output
10A
25A
50A
10A
25A
50A
Nominal voltage
120/240VAC
120/240VAC
120/240VAC
120/240VAC
120/240VAC
120/240VAC
One cycle surge current 120A
250A
625A
120A
250A
625A
60A2 seconds
260A2 seconds
1,620A2 seconds
60A2 seconds
260A2 seconds
1,620A2 seconds
Max. I2t for fusing
Thermal resistance
1.48° C/W
1.05° C/W
0.63° C/W
1.48° C/W
1.05° C/W
0.31° C/W
Ambient operating
-40 to 176°F
-40 to 176°F
-40 to 176°F
-40 to 176°F
-40 to 176°F
-40 to 176°F
temperature
(-40 to 80°C)
(-40 to 80°C)
(-40 to 80°C)
(-40 to 80°C)
(-40 to 80°C)
(-40 to 80°C)
Output (Max.)
Voltage range
48-280VAC
48-280VAC
48-280VAC
48-280VAC
48-280VAC
48-280VAC
Over voltage rating
600V (peak)
600V (peak)
600V (peak)
600V (peak)
600V (peak)
600V (peak)
Off state leakage
10mA
10mA
10mA
10mA
10mA
10mA
120/240VAC
Model Number
Current output
Nominal voltage
One cycle surge current
Max. I2t for fusing
Thermal resistance
Ambient operating
temperature
Output (Max.)
Voltage range
Over voltage rating
Off state leakage
480 VAC
Model Number
Current output
Nominal voltage
One cycle surge current
Max. I2t for fusing
Thermal resistance
Ambient operating
temperature
Output (Max.)
Voltage range
Over voltage rating
Off state leakage
340
Random Fired Models
100VDC
SSR-240-75A-DC1
75A
120/240VAC
1000A
6000A2 seconds
0.31° C/W
-40 to 176°F
(-40 to 80°C)
SSR-240-75A-AC1
75A
120/240VAC
1000A
6000A2 seconds
0.31° C/W
-40 to 176°F
(-40 to 80°C)
SSR-480-50A-RND
50A
480VAC
625A
1,620A2 seconds
0.63° C/W
-40 to 176°F
(-40 to 80°C)
SSR-480-75A-RND
75A
480VAC
1000A
6000A2 seconds
0.31° C/W
-40 to 176°F
(-40 to 80°C)
SSR-240-10A-RND
10A
120/240VAC
120A
60A2 seconds
1.48° C/W
-40 to 176°F
(-40 to 80°C)
SSR-100-20A-DC1
20A
100VDC
42A (10ms)
N/A
1.06° C/W
-4 to 176°F
(-20 to 80°C)
48-280VAC
600V (peak)
10mA
48-280VAC
600V (peak)
10mA
80-530VAC
1200V (peak)
10mA
80-530VAC
1200V (peak)
10mA
48-280VAC
600V (peak)
10mA
0-100VDC
N/A
0.3mA VDC
SSR-480-25A-DC1
25A
480VAC
250A
260A2 seconds
1.02° C/W
-40 to 176°F
(-40 to 80°C)
SSR-480-50A-DC1
50A
480VAC
625A
1,620A2 seconds
0.63° C/W
-40 to 176°F
(-40 to 80°C)
SSR-480-75A-DC1
75A
480VAC
1000A
6,000A2 seconds
0.31° C/W
-40 to 176°F
(-40 to 80°C)
SSR-480-25A-ac1
25A
480VAC
250A
260A2 seconds
1.02° C/W
-40 to 176°F
(-40 to 80°C)
SSR-480-50A-ac1
50A
480VAC
625A
1,620A2 seconds
0.63° C/W
-40 to 176°F
(-40 to 80°C)
SSR-480-75A-ac1
75A
480VAC
1000A
6,000A2 seconds
0.31° C/W
-40 to 176°F
(-40 to 80°C)
48-530VAC
1200V (peak)
10mA
48-530VAC
1200V (peak)
10mA
48-530VAC
1200V (peak)
10mA
48-530VAC
1200V (peak)
10mA
48-530VAC
1200V (peak)
10mA
48-530VAC
1200V (peak)
10mA
WATLOW®
Power Switching Devices
Solid State Relays
Heater Life
Watlow has extensively tested electric heating elements
with a variety of power switching devices. Results
prove that the life of an electric element dramatically
increases when the on-off cycle time that is used to
time-proportion the heater is kept at less than one
second. This reduces the thermal expansion and
contraction of the element and improves heater life as
much as 20 times. This very fast cycle time controls
temperature much more accurately and allows the use
of higher watt density heating elements.
cases where uncontrolled full power can cause damage,
it is recommended that a high limit temperature controller
and contactor be used for protection.
Wiring Diagrams
Single-Phase Fast Cycle Input Card
Temp
Control
4-20
mA VDC
Output
Fast Cycle Card
In order to obtain the very rapid cycling time required
for longer heater life, accurate temperature control
and higher watt densities, Watlow has developed a
loop-powered firing card for SSRs. This card operates
from a standard instrumentation signal of 4 to 20mA and
controls solid state relays with a time proportional cycle
rate of less than one second (4VAC cycles on and 4VAC
cycles off at 50 percent power).
Thermal Transfer
A thermal foil is provided with each solid state relay
for mounting on the base of the relay to improve heat
transfer. In addition, two belville washers are supplied to
provide the proper pressure for this transfer of heat. Use
two #8-32 screws 0.625 in. (16 mm) long to secure the
relay to the heat sink.
Replacing Contactors or Mercury
Displacement Relays (MDRs)
Improvements in heater life and control accuracy can be
achieved with SSRs operated with rapid cycle times as
compared to slower operating electromechanical relays
or even MDRs. When replacing these types of relays
with the SSR, it is important to consider two aspects:
1.Heat
Solid state devices require a small voltage to turn
on, which is consumed as heat (approx. 1.5 volts x amps = watts). This heat must be removed from the device and is usually accomplished by mounting the relay on a heat sink.
2.Failure Mode
Solid state devices should last for many years when properly protected with voltage snubbers, mounted on appropriate heat sinks and when fused with
semiconductor fuses against the high currents caused by electrical shorts. Watlow’s SSRs include an internal voltage snubber. However, if the unit fails, the most probable condition will be a short. Mechanical relays also have a good probability of failing short. In all
WATLOW®
L1
Input
Card
+
Fuse
DC
SSR
-
Heater
L2
Shorted SSR Alarm
The most prevalent concern when using solid state
relays is the possibility of a relay failing in a shorted
condition. With this in mind, Watlow has designed a
cost effective “Shorted SSR Alarm.”
The device monitors the output (current through the
heater) and activates a triac (alarm) if there is no
command signal from the temperature controller.
The triac can be wired to a bell, or to a normally
closed latching relay to remove power to the heater.
The shorted SSR alarm is not a substitute for an
agency-approved high-temperature limit device.
Single-Phase Shorted SSR Detector
Thermocouple
L1
Heater
Mounted
Current
Transformer
L2
Shorted SSR
Detector
Solid
State
Relay
D.C.
Temp
Control
Open
Collector
-
Contactor
+
0 and
5VDC
on-off
Relay
Note: Semiconductor power switching devices are not
legal for over temperature limit or safety devices. For limit
and safety devices you must have a positive mechanical
break of all electrically hot legs simultaneously.
341
Power Switching Devices
Solid State Relays
Dimensions - Heat Sink
Dimensions - Solid State Relay
E
E
0.19 in.
(4.8 mm)
8-32
Thread
1.75 in.
(44.5 mm)
1.1 in.
(28 mm)
0.3 in.
(8 mm)
1.88 in.
1.88(47.8
in. mm) C
D
(47.8 mm) C
1.7 in.
(43 mm)
1.875 in.
(47.63 mm)
D
2.25 in.
(57.2 mm)
Drilled and
Tapped
Drilled
and 8-32
Tapped 8-32
A
A
B
B
F
0.53 in.
(13.5 mm)
1 in.
(25 mm)
0.172 in.
(4.37 mm) Dia.
2 Places
F
6-32 Thread
Case Temp.
Ref. Point
0.12 in.
(3 mm)
0.9 in.
0.77 in. (23 mm)
(19.6 mm)
Heat Sink Dimensions by Part Number
Dimensions
Part Number
Descriptor
A
(mm)
in.
in.
B
(mm)
in.
C
(mm)
in.
D
(mm)
in.
E
(mm)
in.
F
(mm)
Z100-0815-000A
18A
1.8
(46)
3.25 (82.6)
3.7
(94)
1.9
(48)
Z100-0815-000B
35A
1.91 (48.5)
3.2
(81)
3.25 (82.6)
3.7
(94)
1.81 (46)
2.9
(74)
Z100-0815-000C
55A
1.89 (48)
3.2
(81)
5.45 (138.4)
5.89
(149.6)
1.81 (46)
3.6
(91)
Z100-0815-XXFC*
75A
1.89 (48)
3.2
(81)
5.45 (138.4)
7.16
(181.9)
1.81 (46)
3.6
(91)
N/A
N/A
*Fan cooled
Ordering Information
Part Number
① ②③
SSR
-
④⑤⑥
⑦⑧
Voltage
Current
-
⑩⑪⑫
⑨
Control
Voltage
A
-
Voltage
④⑤⑥
100 = 0 to 100VDC (20A model only)
240 = 24 to 240VAC
480 = 24 to 530VAC
⑦⑧
10 =
20 =
25 =
40 =
50 =
75 =
Current
10A
20A (100VDC model only)
25A
40A
50A
75A
⑩⑪⑫
Control Voltage
DC1 = 3 to 32VDC (see specifications)
AC1 = 90 to 280VAC
RND = 3 to 32VDC (10, 50 and 75A models only)
Note: Relay will also include thermal foil, two belville washers and
#8-32 screws for mounting to a heat sink.
342
Heat Sinks (sold separately)
Z100-0815-000A = 18A or 2.2°C/watt
Z100-0815-000B = 35A or 1.1°C/watt
Z100-0815-000C = 55A or 0.6°C/watt
Z100-0815-12FC = 75A or 0.16°C/watt (120VAC fan)
Z100-0815-24FC = 75A or 0.16°C/watt (240VAC fan)
Fast Cycle Input Card and Shorted SSR Alarm Card
For direct mounting on zero cross dc input solid state relay.
RPC-5399-42-000 =
Fast cycle input card, 4 to 20mA input
RPC-5386-0000 =
Shorted SSR alarm card
Sub Cycle Fuses - I2T (sold separately)
Recommended and available with holders.
WATLOW®