Overload Relays ■ General data

Overload Relays ■ General data
© Siemens AG 2010
Overload Relays
General data
■ Overview
Features
Benefits
3RU11
3RB20/3RB21
3RB22/3RB23
S00 ... S12
S00 ... S12
0.1 ... 630 A
0.3 ... 630 A
(... 820 A)1)
General data
• Are coordinated with the dimensions, connections S00 ...S3
and technical characteristics of the other devices
in the SIRIUS modular system (contactors, soft
starters, ...)
Sizes
• Permit the mounting of slim and compact load
feeders in widths of 45 mm (S00), 45 mm (S0),
55 mm (S2), 70 mm (S3), 120 mm (S6) and
145 mm (S10/S12)
• Simplify configuration
Seamless current range
• Allows easy and consistent configuration with one 0.11 ... 100 A
series of overload relays (for small to large loads)
Protection functions
• Provides optimum inverse-time delayed protection
of loads against excessive temperature rises due
to overload
✓
✓
✓
Tripping in the event of phase unbalance
• Provides optimum inverse-time delayed protection
of loads against excessive temperature rises due
to phase unbalance
(✓)
✓
✓
Tripping in the event of phase failure
• Minimizes heating of induction motors during
phase failure
✓
✓
✓
Protection of single-phase loads
• Enables the protection of single-phase loads
Tripping in the event of overheating
• Provides optimum temperature-dependent protection of loads against excessive temperature rises, e. g. for stator-critical motors or in the event of
insufficient coolant flow, contamination of the motor surface or for long starting or braking operations
5
Tripping in the event of overload
by
integrated thermistor motor protection function
✓
--
✓
--2)
--2)
✓
--
✓
(only 3RB21)
✓
✓
✓
✓
✓
(by means of separate module)
✓.
(only 3RB21 with
24 V DC)
✓
✓
• Eliminates the need for additional special equipment
• Saves space in the control cabinet
• Reduces wiring outlay and costs
Tripping in the event of a ground fault • Provides optimum protection of loads against
high-resistance short-circuits or ground faults due
by
to moisture, condensed water, damage to the insulation material, etc.
internal ground-fault detection (acti- • Eliminates the need for additional special equipvatable)
ment
• Saves space in the control cabinet
• Reduces wiring outlay and costs
Features
RESET function
• Allows manual or automatic resetting of the relay
Remote RESET function
• Allows the remote resetting of the relay
TEST function for auxiliary contacts
• Allows easy checking of the function and wiring
✓
✓
TEST function for electronics
• Allows checking of the electronics
--
✓
✓
Status display
• Displays the current operating state
✓
✓
✓
Large current adjustment button
• Makes it easier to set the relay exactly to the correct current value
✓
✓
✓
Integrated auxiliary contacts
(1 NO + 1 NC)
• Allows the load to be switched off if necessary
✓
✓
✓
(2 ×)
1)
2)
• Can be used to output signals
Motor currents up to 820 A can be recorded and evaluated by a current
measuring module, e. g. 3RB29 06-2BG1 (0.3 ... 3 A), in combination with
a 3UF18 68-3GA00 (820 A / 1 A) series transformer.
For 3UF18 transformers see Chapter 7, "Monitoring and Control Devices"
--> "SIMOCODE 3UF Motor Management and Control Devices".
The SIRIUS 3RN thermistor motor protection devices can be used to provide additional temperature-dependent protection.
5/42
Siemens LV 1 · 2010
✓ = Available
-- = Not available
© Siemens AG 2010
Overload Relays
General data
Features
Benefits
3RU11
3RB20/3RB21
3RB22/3RB23
Design of load feeders
✓
✓
✓
✓
✓
✓1)
--
✓
(S2 ... S6)
✓
(S00 ... S6)
✓
(S00)
--
--
✓
✓
✓
✓
✓
✓
(✓)
✓
✓
--
✓
(1:4)
✓
(1:10)
• Enables solutions for very fast starting motors requiring special protection (e. g. Ex motors)
--
✓
(only 3RB21)
✓
Trip classes > CLASS 10
• Enables heavy starting solutions
--
✓
✓
Low power loss
• Reduces power consumption and energy costs
(up 98 % less power is used than for thermal overload relays).
--
✓
✓
Short-circuit strength up to 100 kA
• Provides optimum protection of the loads and opat 690 V
erating personnel in the event of short-circuits due
(in conjunction with the corresponding
to insulation faults or faulty switching operations
fuses or the corresponding motor starter
protector)
Electrical and mechanical matching
to 3RT1 contactors
• Simplifies configuration
• Reduces wiring outlay and costs
• Enables stand-alone installation as well as spacesaving direct mounting
• Reduces the contact resistance (only one point of
contact)
• Saves wiring costs (easy, no need for tools, and
fast)
• Saves material costs
• Reduces installation costs
Spring-type terminal connection sys- • Enables fast connections
tem for main circuit2)
• Permits vibration-resistant connections
5
Straight-through transformers for
main circuit2)
(in this case the cables are routed
through the feed-through openings of
the overload relay and connected
directly to the box terminals of the contactor)
• Enables maintenance-free connections
Spring-type terminal connection sys- • Enables fast connections
tem for auxiliary circuits2)
• Permits vibration-resistant connections
• Enables maintenance-free connections
Other features
Temperature compensation
• Allows the use of the relays at high temperatures
without derating
• Prevents premature tripping
• Allows compact installation of the control cabinet
without distance between the devices/load feeders
• Simplifies configuration
• Enables space to be saved in the control cabinet
Very high long-term stability
• Provides safe protection for the loads even after
years of use in severe operating conditions
Wide setting ranges
• Reduce the number of variants
• Minimize the engineering outlay and costs
• Minimize storage overhead, storage costs, tied-up
capital
Trip class CLASS 5
• Minimizes temperature rises of the contactor and
control cabinet – in some cases this may eliminate
the need for controlgear cabinet cooling.
• Direct mounting to contactor saves space, even
for high motor currents (i. e. no heat decoupling is
required).
1)
Exception: up to size S3, only stand-alone installation is possible.
✓ = Available
2)
Alternatively available for screw terminals.
-- = Not available
Siemens LV 1 · 2010
5/43
© Siemens AG 2010
Overload Relays
General data
Features
Benefits
3RU11
3RB20/3RB21
3RB22/3RB23
Other features
Internal power supply
• Eliminates the need for configuration and connecting an additional control circuit
Variable adjustment of the trip
classes
• Reduces the number of variants
--1)
✓
--
--
✓
(only 3RB21)
✓
--
--
✓
--
--
✓
• Minimizes the configuring outlay and costs
(The required trip class can be adjusted • Minimizes storage overhead, storage costs, and
by means of a rotary switch depending
tied-up capital
on the current start-up condition.)
Overload warning
• Indicates imminent tripping of the relay directly on
the device due to overload, phase unbalance or
phase failure
• Allows the imminent tripping of the relay to be signaled
• Allows measures to be taken in time in the event of
continuous inverse-time delayed overloads
• Eliminates the need for an additional device
5
• Saves space in the control cabinet
• Reduces wiring outlay and costs
Analog output
• Allows the output of an analog output signal for actuating moving-coil instruments, feeding programmable logic controllers or transfer to bus systems
• Eliminates the need for an additional measuring
transducer and signal converter
• Saves space in the control cabinet
• Reduces wiring outlay and costs
1)
The SIRIUS 3RU11 thermal overload relays use a bimetal contactor and
therefore do not require a control supply voltage.
5/44
Siemens LV 1 · 2010
✓ = Available
-- = Not available
© Siemens AG 2010
Overload Relays
General data
Overload relays Current
measurement
Current
range
Type
A
Type
Contactors (type, size, rating in kW)
3RT10 1
3RT10 2
3RT10 3
3RT10 4
3RT10 5
3RT10 6
3RT10 7
3TF68/
3TF69
S00
S0
S2
S3
S6
S10
S12
Size 14
3/4/5.5
5.5/7.5/11 15/18.5/22 30/37/45
55/75/90
110/132/160 200/250
375/450
SIRIUS 3RU11 thermal overload relays
3RU11 1
Integrated
0.11 … 12
✓
--
--
--
--
--
--
3RU11 2
Integrated
1.8 … 25
--
✓
--
--
--
--
--
--
3RU11 3
Integrated
5.5 … 50
--
--
✓
--
--
--
--
--
3RU11 4
Integrated
18 … 100
--
--
--
✓
--
--
--
--
--
--
SIRIUS 3RB20 solid-state overload relays1)
3RB20 1
Integrated
0.1 … 12
✓
--
--
--
--
--
--
3RB20 2
Integrated
0.1 … 25
--
✓
--
--
--
--
--
--
3RB20 3
Integrated
6 … 50
--
--
✓
--
--
--
--
--
3RB20 4
Integrated
12.5 … 100
--
--
--
✓
--
--
--
--
3RB20 5
Integrated
50 ... 200
--
--
--
--
✓
--
--
--
3RB20 6
Integrated
55 ... 630
--
--
--
--
--
✓
✓
✓
3RB20 1 +
3UF18
Integrated
630 ... 820
--
--
--
--
--
--
--
✓
--
3RB21 1
Integrated
0.1 … 12
✓
--
--
--
--
--
--
3RB21 2
Integrated
0.1 … 25
--
✓
--
--
--
--
--
--
3RB21 3
Integrated
6 … 50
--
--
✓
--
--
--
--
--
3RB21 4
Integrated
12.5 … 100
--
--
--
✓
--
--
--
--
3RB21 5
Integrated
50 ... 200
--
--
--
--
✓
--
--
--
3RB21 6
Integrated
55 ... 630
--
--
--
--
--
✓
✓
✓
3RB21 1 +
3UF18
Integrated
630 ... 820
--
--
--
--
--
--
--
✓
SIRIUS 3RB22/3RB23 solid-state overload relays1)
1)
3RB29 0
0.3 … 25
✓
✓
--
--
--
--
--
--
3RB29 0
10 ... 100
--
--
✓
✓
--
--
--
--
3RB22/3RB23 + 3RB29 5
20 … 200
--
--
--
--
✓
--
--
--
3RB29 6
63 ... 630
--
--
--
--
--
✓
✓
✓
3RB29 0 +
3UF18
630 ... 820
--
--
--
--
--
--
--
✓
"Technical Specifications" for use of the overload relays with trip Class
≥ CLASS 20 can be found under "Short-circuit protection with fuses for
motor feeders", see the note on Technical Information on page 5/1; and in
the project planning aid "Configuring SIRIUS Fuseless Load Feeders".
✓ = Can be used
-- = Cannot be used
Connection methods
The 3RB20 and 3RB21 relays are available with screw terminals
(box terminals) or spring-type terminals on the auxiliary current
side; the same applies for the evaluation modules of the
3RB22/3RB23 relays. The 3RU11 relays come with screw terminals.
Screw terminals
Spring-type terminals or Cage Clamp terminals
The terminals are indicated in the selection and ordering data by orange backgrounds.
Siemens LV 1 · 2010
5/45
5
SIRIUS 3RB21 solid-state overload relays1)
© Siemens AG 2010
Overload Relays
SIRIUS 3RU1 Thermal Overload Relays
3RU11 for standard applications
"Increased safety" type of protection EEx e according to
ATEX directive 94/9/EC
■ Overview
3
The 3RU11 thermal overload relays are suitable for the overload
protection of explosion-proof motors with "increased safety" type
of protection EEx e. The relays meet the requirements of
EN 60079-7 (Electrical apparatus for areas subject to explosion
hazards – Increased safety "e");
see Chapter 20 "Appendix" --> "Standards and approvals"
--> "Type overview of approved devices for explosion-protected
areas (ATEX Explosion Protection)".
4
EC type test certificate for Category (2) G/D exists. It has the
number DMT 98 ATEX G 001.
1
2
5
7
6
■ Benefits
The most important features and benefits of the 3RU11 thermal
overload relays are listed in the overview table (see
"General Data" on page 5/42).
■ Application
$ Connection for mounting onto contactors:
5
%
&
(
)
*
+
Optimally adapted in electrical, mechanical and design terms to the
contactors. Connecting pins can be used for direct mounting of the
overload relays. Stand-alone installation is possible as an alternative
(in some cases in conjunction with a stand-alone installation module).
Selector switch for manual/automatic RESET and RESET button:
With this switch you can choose between manual and automatic RESET. A device set to manual RESET can be reset locally by pressing
the RESET button. A remote RESET is possible using the RESET modules (accessories), which are independent of size.
Switch position indicator and TEST function of the wiring:
Indicates a trip and enables the wiring test.
Motor current setting:
Setting the device to the rated motor current is easy with the large rotary knob.
STOP button:
If the STOP button is pressed, the NC contact is opened. This switches
off the contactor downstream. The NC contact is closed again when
the button is released.
Transparent, sealable cover:
Secures the motor current setting and the TEST function against adjustment.
Supply terminals:
The generously sized terminals permit connection of two conductors
with different cross-sections for the main and auxiliary circuits. The
auxiliary circuit can be connected with screw terminals and alternatively with spring-type terminals.
The 3RU11 thermal overload relays up to 100 A have been designed for inverse-time delayed protection of loads with normal
starting (for "Function" see note on Technical Information on
page 5/1) against excessive temperature rises due to overload
or phase failure.
An overload or phase failure results in an increase of the motor
current beyond the set rated motor current. Via heating elements, this current rise heats up the bimetal strips inside the device which then bend and as a result trigger the auxiliary contacts by means of a tripping mechanism. The auxiliary contacts
then switch off the load by means of a contactor. The break time
depends on the ratio between the tripping current and set current Ie and is stored in the form of a long-term stable tripping
characteristic (for "Characteristic Curves" see the note on Technical Information on page 5/1).
The "tripped" status is signaled by means of a switch position indicator. Resetting takes place either manually or automatically
after a recovery time has elapsed (for "Function" see note on
Technical Information on page 5/1).
The devices are manufactured in accordance with environmental guidelines and contain environmentally friendly and reusable
materials.
They comply with all important worldwide standards and approvals.
5/46
Siemens LV 1 · 2010
Industries
The 3RU11 thermal overload relays are suitable for customers
from all industries who want to guarantee optimum inverse-time
delayed protection of their electrical loads (e. g. motors) under
normal starting conditions (CLASS 10).
Application
The 3RU11 thermal overload relays have been designed for the
protection of three-phase and single-phase AC and DC motors.
If single-phase AC or DC loads are to be protected by the 3RU11
thermal overload relays, all three bimetal strips must be heated.
For this purpose, all main current paths of the relay must be connected in series.
Ambient conditions
The 3RU11 thermal overload relays have temperature compensation in accordance with IEC 60947-4-1 for the temperature
range of –20 °C to +60 °C. For temperatures from +60 °C to
+80 °C the upper set value of the setting range must be reduced
by the factor listed in the table below.
Ambient temperature in °C
Derating factor for the upper set
value
+60
1.0
+65
0.94
+70
0.87
+75
0.81
+80
0.73
■ Accessories
The following optional accessories are available for the 3RU11
thermal overload relays:
• For the four overload relay sizes S00 to S3 one terminal
bracket each for stand-alone installation
• One mechanical RESET module for all sizes
• One cable release for resetting devices which are difficult to
access (for all sizes)
• One electrical remote RESET module in three voltage variants
for all sizes
• Terminal covers
© Siemens AG 2010
Overload Relays
SIRIUS 3RU1 Thermal Overload Relays
3RU11 for standard applications
■ Selection and ordering data
3RU11 thermal overload relays with screw terminals on the auxiliary current side for direct mounting1), CLASS 10
•
•
•
•
Features and technical specifications:
• Overload and phase failure protection
• Auxiliary contacts 1 NO + 1 NC
• Manual and automatic RESET
Size of Rating
confor induction
tactor2) motor
rated value3)
Current setting of
the inverse-time
delayed overload
release
Short-circuit DT
protection
with fuse,
type of coordination 2,
gL/gG operational class4)
Switch position indicator
TEST function
STOP button
Integrated, sealable cover
PU
(UNIT,
SET, M)
Screw terminals
(on auxiliary current
side)
Order No.
PS*
PG
Weight
per PU
approx.
Price
per PU
kg
kW
A
A
0.04
0.06
0.06
0.09
0.11 ... 0.16
0.14 ... 0.2
0.18 ... 0.25
0.22 ... 0.32
0.5
1
1
1.6
}
}
}
}
3RU11 16-0AB0
3RU11 16-0BB0
3RU11 16-0CB0
3RU11 16-0DB0
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.150
0.150
0.150
0.150
0.09
0.12
0.18
0.18
0.28 ... 0.4
0.35 ... 0.5
0.45 ... 0.63
0.55 ... 0.8
2
2
2
4
}
}
}
}
3RU11 16-0EB0
3RU11 16-0FB0
3RU11 16-0GB0
3RU11 16-0HB0
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.150
0.150
0.150
0.150
0.25
0.37
0.55
0.75
0.7 ... 1
0.9 ... 1.25
1.1 ... 1.6
1.4 ... 2
4
4
6
6
}
}
}
}
3RU11 16-0JB0
3RU11 16-0KB0
3RU11 16-1AB0
3RU11 16-1BB0
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.150
0.150
0.150
0.150
0.75
1.1
1.5
1.5
1.8 ... 2.5
2.2 ... 3.2
2.8 ... 4
3.5 ... 5
10
10
16
20
}
}
}
}
3RU11 16-1CB0
3RU11 16-1DB0
3RU11 16-1EB0
3RU11 16-1FB0
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.150
0.150
0.150
0.150
2.2
3
4
5.5
4.5 ... 6.3
5.5 ... 8
7 ... 10
9 ... 12
20
25
35
35
}
}
}
}
3RU11 16-1GB0
3RU11 16-1HB0
3RU11 16-1JB0
3RU11 16-1KB0
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.150
0.150
0.150
0.150
0.75
1.1
1.5
1.5
1.8 ... 2.5
2.2 ... 3.2
2.8 ... 4
3.5 ... 5
10
10
16
20
}
}
}
}
3RU11 26-1CB0
3RU11 26-1DB0
3RU11 26-1EB0
3RU11 26-1FB0
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.190
0.190
0.190
0.190
2.2
3
4
5.5
4.5 ... 6.3
5.5 ... 8
7 ... 10
9 ... 12.5
20
25
35
35
}
}
}
}
3RU11 26-1GB0
3RU11 26-1HB0
3RU11 26-1JB0
3RU11 26-1KB0
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.190
0.190
0.190
0.190
7.5
7.5
11
11
11 ... 16
14 ... 20
17 ... 22
20 ... 25
40
50
63
63
}
}
}
}
3RU11 26-4AB0
3RU11 26-4BB0
3RU11 26-4CB0
3RU11 26-4DB0
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.190
0.190
0.190
0.190
3
4
5.5
5.5 ... 8
7 ... 10
9 ... 12.5
25
35
35
}
}
}
3RU11 36-1HB0
3RU11 36-1JB0
3RU11 36-1KB0
1
1
1
1 unit
1 unit
1 unit
101
101
101
0.320
0.320
0.320
7.5
7.5
11
15
11 ... 16
14 ... 20
18 ... 25
22 ... 32
40
50
63
80
}
}
}
}
3RU11 36-4AB0
3RU11 36-4BB0
3RU11 36-4DB0
3RU11 36-4EB0
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.320
0.320
0.320
0.320
18.5
22
22
28 ... 40
36 ... 45
40 ... 50
80
100
100
}
}
}
3RU11 36-4FB0
3RU11 36-4GB0
3RU11 36-4HB0
1
1
1
1 unit
1 unit
1 unit
101
101
101
0.320
0.320
0.320
11
15
18 ... 25
22 ... 32
63
80
}
}
3RU11 46-4DB0
3RU11 46-4EB0
1
1
1 unit
1 unit
101
101
0.550
0.550
18.5
22
30
37
28 ... 40
36 ... 50
45 ... 63
57 ... 75
80
125
125
160
}
}
}
}
3RU11 46-4FB0
3RU11 46-4HB0
3RU11 46-4JB0
3RU11 46-4KB0
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.550
0.550
0.550
0.550
45
45
70 ... 90
80 ... 1005)
160
200
}
}
3RU11 46-4LB0
3RU11 46-4MB0
1
1
1 unit
1 unit
101
101
0.550
0.550
S00
3RU11 16-..B0
Size S0
S0
3RU11 26-..B0
Size S2
S2
3RU11 36-..B0
Size S3
S3
3RU11 46-..B0
1)
With the suitable terminal brackets (see "Accessories", page 5/50), the
3RU11 overload relays for direct mounting can also be installed as standalone units.
2)
Observe maximum rated operational current of the devices.
3)
Guide value for 4-pole standard motors at AC 50 Hz 400 V. The actual
starting and rated data of the motor to be protected must be considered
when selecting the units.
4)
Maximum protection by fuse for overload relay, type of coordination 2.
For fuse values in conjunction with contactors, see "Technical
specifications" --> "Short-circuit protection with fuses/motor starter protectors for motor feeders", see note on Technical Information on page 5/1.
5)
For overload relays > 100 A, see 3RB2.
* You can order this quantity or a multiple thereof.
Siemens LV 1 · 2010
5/47
5
Size S00
© Siemens AG 2010
Overload Relays
SIRIUS 3RU1 Thermal Overload Relays
3RU11 for standard applications
3RU11 thermal overload relays with screw terminals on the auxiliary current side for stand-alone installation1), CLASS 10
•
•
•
•
Features and technical specifications:
• Overload and phase failure protection
• Auxiliary contacts 1 NO + 1 NC
• Manual and automatic RESET
Size of Rating
confor induction
tactor2) motor
rated value3)
Switch position indicator
TEST function
STOP button
Integrated, sealable cover
Current setting
of the inversetime delayed
overload release
Short-circuit DT
protection
with fuse,
type of coordination 2,
gL/gG operational class4)
PU
(UNIT,
SET, M)
kW
A
A
0.04
0.06
0.06
0.09
0.11 ... 0.16
0.14 ... 0.2
0.18 ... 0.25
0.22 ... 0.32
0.5
1
1
1.6
B
B
B
B
3RU11 16-0AB1
3RU11 16-0BB1
3RU11 16-0CB1
3RU11 16-0DB1
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.180
0.180
0.180
0.180
0.09
0.12
0.18
0.18
0.28 ... 0.4
0.35 ... 0.5
0.45 ... 0.63
0.55 ... 0.8
2
2
2
4
}
}
}
}
3RU11 16-0EB1
3RU11 16-0FB1
3RU11 16-0GB1
3RU11 16-0HB1
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.180
0.180
0.180
0.180
0.25
0.37
0.55
0.75
0.7 ... 1
0.9 ... 1.25
1.1 ... 1.6
1.4 ... 2
4
4
6
6
}
}
}
}
3RU11 16-0JB1
3RU11 16-0KB1
3RU11 16-1AB1
3RU11 16-1BB1
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.180
0.180
0.180
0.180
0.75
1.1
1.5
1.5
1.8 ... 2.5
2.2 ... 3.2
2.8 ... 4
3.5 ... 5
10
10
16
20
}
}
}
}
3RU11 16-1CB1
3RU11 16-1DB1
3RU11 16-1EB1
3RU11 16-1FB1
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.180
0.180
0.180
0.180
2.2
3
4
5.5
4.5 ... 6.3
5.5 ... 8
7 ... 10
9 ... 12
20
25
35
35
}
}
}
}
3RU11 16-1GB1
3RU11 16-1HB1
3RU11 16-1JB1
3RU11 16-1KB1
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.180
0.180
0.180
0.180
S0
7.5
7.5
11
11
11 ... 16
14 ... 20
17 ... 22
20 ... 25
40
50
63
63
}
}
}
}
3RU11 26-4AB1
3RU11 26-4BB1
3RU11 26-4CB1
3RU11 26-4DB1
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.240
0.240
0.240
0.240
S2
15
18.5
22
22
22 ... 32
28 ... 40
36 ... 45
40 ... 50
80
80
100
100
}
}
}
}
3RU11 36-4EB1
3RU11 36-4FB1
3RU11 36-4GB1
3RU11 36-4HB1
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.480
0.480
0.480
0.480
S3
30
37
45
45
45 ... 63
57 ... 75
70 ... 90
80 ... 1005)
125
160
160
200
}
}
}
}
3RU11 46-4JB1
3RU11 46-4KB1
3RU11 46-4LB1
3RU11 46-4MB1
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.810
0.810
0.810
0.810
Screw terminals
(on auxiliary current
side)
Order No.
PS*
PG
Weight
per PU
approx.
Price
per PU
kg
Size S00
S00
5
3RU11 16-0AB1
Size S0
3RU11 16-4AB1
Size S2
3RU11 16-4EB1
Size S3
3RU11 16-4JB1
1)
Sizes S00 to S3 for screw and snap-on mounting onto TH 35 standard
mounting rails, size S3 also for TH 75 standard mounting rails.
2)
Observe maximum rated operational current of the devices.
3)
Guide value for 4-pole standard motors at AC 50 Hz 400 V. The actual
starting and rated data of the motor to be protected must be considered
when selecting the units.
4)
Maximum protection by fuse for overload relay, type of coordination 2.
For fuse values in conjunction with contactors, see "Technical
specifications" --> "Short-circuit protection with fuses/motor starter protectors for motor feeders", see note on Technical Information on page 5/1.
5)
For overload relays > 100 A, see 3RB2.
* You can order this quantity or a multiple thereof.
5/48
Siemens LV 1 · 2010
© Siemens AG 2010
Overload Relays
SIRIUS 3RU1 Thermal Overload Relays
3RU11 for standard applications
3RU11 thermal overload relays with Cage Clamp terminals for direct mounting
•
•
•
•
Features and technical specifications:
• Overload and phase failure protection
• Auxiliary contacts 1 NO + 1 NC
• Manual and automatic RESET
Size of Rating
confor induction
tactor3) motor
rated value4)
kW
Current setting
of the inversetime delayed
overload release
Short-circuit DT
protection
with fuse,
type of coordination 2,
gL/gG operational class5)
1)
and stand-alone installation2), CLASS 10
Switch position indicator
TEST function
STOP button
Integrated, sealable cover
PU
(UNIT,
SET, M)
Cage Clamp
terminals
(on auxiliary current
side)
Order No.
PS*
PG
Weight
per PU
approx.
Price
per PU
kg
A
A
0.04
0.06
0.06
0.09
0.11 ... 0.16
0.14 ... 0.2
0.18 ... 0.25
0.22 ... 0.32
0.5
1
1
1.6
B
B
B
B
3RU11 16-0AC1
3RU11 16-0BC1
3RU11 16-0CC1
3RU11 16-0DC1
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.190
0.190
0.190
0.190
0.09
0.12
0.18
0.18
0.28 ... 0.4
0.35 ... 0.5
0.45 ... 0.63
0.55 ... 0.8
2
2
2
4
B
B
}
}
3RU11 16-0EC1
3RU11 16-0FC1
3RU11 16-0GC1
3RU11 16-0HC1
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.190
0.190
0.190
0.190
0.25
0.37
0.55
0.75
0.7 ... 1
0.9 ... 1.25
1.1 ... 1.6
1.4 ... 2
4
4
6
6
}
}
}
}
3RU11 16-0JC1
3RU11 16-0KC1
3RU11 16-1AC1
3RU11 16-1BC1
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.190
0.190
0.190
0.190
0.75
1.1
1.5
1.5
1.8 ... 2.5
2.2 ... 3.2
2.8 ... 4
3.5 ... 5
10
10
16
20
C
}
B
}
3RU11 16-1CC1
3RU11 16-1DC1
3RU11 16-1EC1
3RU11 16-1FC1
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.190
0.190
0.190
0.190
2.2
3
4
5.5
4.5 ... 6.3
5.5 ... 8
7 ... 10
9 ... 12
20
25
35
35
}
}
}
}
3RU11 16-1GC1
3RU11 16-1HC1
3RU11 16-1JC1
3RU11 16-1KC1
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.190
0.190
0.190
0.190
0.75
1.1
1.5
1.5
1.8 ... 2.5
2.2 ... 3.2
2.8 ... 4
3.5 ... 5
10
10
16
20
B
B
B
B
3RU11 26-1CD0
3RU11 26-1DD0
3RU11 26-1ED0
3RU11 26-1FD0
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.190
0.190
0.190
0.190
2.2
3
4
5.5
4.5 ... 6.3
5.5 ... 8
7 ... 10
9 ... 12.5
20
25
35
35
B
B
B
B
3RU11 26-1GD0
3RU11 26-1HD0
3RU11 26-1JD0
3RU11 26-1KD0
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.190
0.190
0.190
0.190
7.5
7.5
11
11
11 ... 16
14 ... 20
17 ... 22
20 ... 25
40
50
63
63
}
}
}
}
3RU11 26-4AD0
3RU11 26-4BD0
3RU11 26-4CD0
3RU11 26-4DD0
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.190
0.190
0.190
0.190
3
4
5.5
7.5
5.5 ... 8
7 ... 10
9 ... 12.5
11 ... 16
25
35
35
40
B
B
B
B
3RU11 36-1HD0
3RU11 36-1JD0
3RU11 36-1KD0
3RU11 36-4AD0
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.320
0.320
0.320
0.320
7.5
11
15
14 ... 20
18 ... 25
22 ... 32
50
63
80
B
B
}
3RU11 36-4BD0
3RU11 36-4DD0
3RU11 36-4ED0
1
1
1
1 unit
1 unit
1 unit
101
101
101
0.320
0.320
0.320
18.5
22
22
28 ... 40
36 ... 45
40 ... 50
80
100
100
}
}
}
3RU11 36-4FD0
3RU11 36-4GD0
3RU11 36-4HD0
1
1
1
1 unit
1 unit
1 unit
101
101
101
0.320
0.320
0.320
11
15
18.5
22
18 ... 25
22 ... 32
28 ... 40
36 ... 50
63
80
80
125
B
B
B
B
3RU11 46-4DD0
3RU11 46-4ED0
3RU11 46-4FD0
3RU11 46-4HD0
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.550
0.550
0.550
0.550
30
37
45
45
45 ... 63
57 ... 75
70 ... 90
80 ... 100
125
160
160
200
}
}
}
}
3RU11 46-4JD0
3RU11 46-4KD0
3RU11 46-4LD0
3RU11 46-4MD0
1
1
1
1
1 unit
1 unit
1 unit
1 unit
101
101
101
101
0.550
0.550
0.550
0.550
S00
3RU11 16-..C1
Size S0 for direct mounting1)7)
S0
3RU11 16-..D0
Size S2 for direct mounting1)7)
S2
3RU11 36-..D0
Size S3 for direct mounting1)7)
S3
3RU11 46-..D0
1)
With the suitable terminal brackets (see "Accessories", page 5/50), the
3RU11 overload relays for direct mounting can also be installed as standalone units.
5)
Size S00 for screw and snap-on mounting onto TH 35 standard mounting
rail.
Maximum protection by fuse for overload relay, type of coordination 2.
For fuse values in conjunction with contactors, see "Technical
specifications" --> "Short-circuit protection with fuses/motor starter protectors for motor feeders", see note on Technical Information on page 5/1.
2)
6)
Auxiliary and main conductor connections with Cage Clamp terminal.
3)
Observe maximum rated operational current of the devices.
7)
4)
Guide value for 4-pole standard motors at AC 50 Hz 400 V. The actual
starting and rated data of the motor to be protected must be considered
when selecting the units.
Auxiliary conductor connections with Cage Clamp terminals and main conductor connections with screw terminals.
* You can order this quantity or a multiple thereof.
Siemens LV 1 · 2010
5/49
5
Size S00 for stand-alone installation6)
© Siemens AG 2010
Overload Relays
SIRIUS 3RU1 Thermal Overload Relays
Accessories
■ Overview
The following optional accessories are available for the 3RU11
thermal overload relays:
• For the four overload relay sizes S00 to S3 one terminal
bracket each for stand-alone installation
• One mechanical RESET module for all sizes
• One cable release for resetting devices which are difficult to
access (for all sizes)
• One electrical remote RESET module in three voltage variants
for all sizes
• Terminal covers
■ Selection and ordering data
Version
Size
DT
Order No.
Price
per PU
PU
(UNIT,
SET, M)
PS*
PG
Weight
per PU
approx.
kg
Terminal brackets for stand-alone installation
S00
}
3RU19 16-3AA01
1
1 unit
101
0.060
S0
}
3RU19 26-3AA01
1
1 unit
101
0.080
S2
}
3RU19 36-3AA01
1
1 unit
101
0.180
S3
}
3RU19 46-3AA01
1
1 unit
101
0.280
Resetting plungers, holders and formers S00 ... S3
}
3RU19 00-1A
1
1 unit
101
0.038
Pushbuttons with extended stroke
(12 mm), IP65, Ø 22 mm
B
3SB30 00-0EA11
1
1 unit
102
0.020
Extension plungers
For compensation of the distance between
the pushbutton and the unlatching button of
the relay
A
3SX1 335
1
1 unit
102
0.004
• Length 400 mm
}
3RU19 00-1B
1
1 unit
101
0.063
• Length 600 mm
}
3RU19 00-1C
1
1 unit
101
0.073
For separate mounting of overload relays;
screw and snap-on mounting onto TH 35
standard mounting rail; size S3 also for
TH 75 standard mounting rail
3RU19 .6-3AA01
5
Mechanical RESET1)
3RU19 00-1A
with pushbutton and
extension plunger
Cable releases with holder for RESET1)
For Ø 6.5 mm holes in the control panel;
max. control panel thickness 8 mm
S00 ... S3
3RU19 00-1.
Modules for remote RESET, electrical
Operating range
0.85 ... 1.1 x Us,
power consumption
AC 80 VA, DC 70 W,
ON period
0.2 ... 4 s,
switching frequency
60/h
}
3RU19 00-2AB71
1
1 unit
101
0.066
110 ... 127 V
}
3RU19 00-2AF71
1
1 unit
101
0.067
220 ... 250 V
}
3RU19 00-2AM71
1
1 unit
101
0.066
}
3RT19 46-4EA1
1
1 unit
101
0.040
24 ... 30 V
S00 ... S3
3RU19 00-2A.71
Terminal covers1)
Covers for cable lugs and busbar connections
• Length 55 mm
S3
Covers for box terminals
• Length 20.6 mm
S2
}
3RT19 36-4EA2
1
1 unit
101
0.020
• Length 20.8 mm
S3
}
3RT19 46-4EA2
1
1 unit
101
0.025
For more accessories (screwdrivers and labeling plates), see
page 5/62.
1)
The accessories are identical to those of the 3RB2 solid-state overload
relays.
* You can order this quantity or a multiple thereof.
5/50
Siemens LV 1 · 2010
© Siemens AG 2010
Overload Relays
SIRIUS 3RB2 Solid-State Overload Relays
3RB20, 3RB21 for standard applications
■ Overview
The 3RB20 and 3RB21 solid-state overload relays up to 630 A
with internal power supply have been designed for inverse-time
delayed protection of loads with normal and heavy starting (for
"Function" see note on Technical Information on page 5/1)
against excessive temperature rises due to overload, phase unbalance or phase failure.
2
5
2
3
6
4
7
$ Connection for mounting onto contactors:
%
&
(
(
*
+
Optimally adapted in electrical, mechanical and design terms to the
contactors and soft starters. Connecting pins can be used for direct
mounting of the overload relays. Stand-alone installation is possible as
an alternative (in some cases in conjunction with a stand-alone installation module).
Selector switch for manual/automatic RESET and RESET button:
With the slide switch you can choose between manual and automatic
RESET. A device set to manual RESET can be reset locally by pressing
the RESET button. On the 3RB21 a solid-state remote RESET is integrated.
Switch position indicator and TEST function of the wiring:
Indicates a trip and enables the wiring test.
Solid-state test (device test):
Enables a test of all important device components and functions.
Motor current setting:
Setting the device to the rated motor current is easy with the large rotary knob.
Trip class setting/internal ground-fault detection (only 3RB21):
Using the rotary switch you can set the required trip class and activate
the internal ground-fault detection dependent on the start-up conditions.
Connecting terminals (removable joint block for auxiliary circuits):
The generously sized terminals permit connection of two conductors
with different cross-sections for the main and auxiliary circuits. The
auxiliary circuit can be connected with screw terminals and alternatively with spring-type terminals.
An overload, phase unbalance or phase failure result in an increase of the motor current beyond the set rated motor current.
This current rise is detected by the current transformers integrated into the devices and evaluated by corresponding solidstate circuits which then output a pulse to the auxiliary contacts.
The auxiliary contacts then switch off the load by means of a
contactor. The break time depends on the ratio between the tripping current and set current Ie and is stored in the form of a longterm stable tripping characteristic (for "Characteristic Curves"
see the note on Technical Information on page 5/1).
In addition to inverse-time delayed protection of loads against
excessive temperature rises due to overload, phase unbalance
and phase failure, the 3RB21 solid-state overload relays also allow internal ground-fault detection (not possible in conjunction
with contactor assemblies for wye-delta starting). This provides
protection of loads against high-resistance short-circuits due to
damage to the insulation material, moisture, condensed water
etc.
The "tripped" status is signaled by means of a switch position indicator. Resetting takes place either manually or automatically
after a recovery time has elapsed (for "Function" see note on
Technical Information on page 5/1).
The devices are manufactured in accordance with environmental guidelines and contain environmentally friendly and reusable
materials. They comply with all important worldwide standards
and approvals.
"Increased safety" type of protection EEx e according to
ATEX directive 94/9/EC
The 3RB20/3RB21 solid-state overload relays are suitable for the
overload protection of explosion-proof motors with "increased
safety" type of protection EEx e. The relays meet the requirements of EN 60079-7 (Electrical apparatus for areas subject to
explosion hazards – Increased safety "e"); see Chapter 20
"Appendix" --> "Standards and approvals" --> "Type overview
of approved devices for explosion-protected areas (ATEX Explosion Protection)".
EC type test certificate for Group II, Category (2) G/D exists. It
has the number PTB 06 ATEX 3001.
■ Benefits
The most important features and benefits of the 3RB20/3RB21
solid-state overload relays are listed in the overview table (see
"General Data" on page 5/42).
Siemens LV 1 · 2010
5/51
5
1
© Siemens AG 2010
Overload Relays
SIRIUS 3RB2 Solid-State Overload Relays
3RB20, 3RB21 for standard applications
■ Application
■ Accessories
Industries
The 3RB20/3RB21 solid-state overload relays are suitable for
customers from all industries who want to guarantee optimum inverse-time delayed protection of their electrical loads (e. g. motors) under normal and heavy starting conditions (CLASS 5 to
CLASS 30), minimize project completion times, inventories and
power consumption, and optimize plant availability and maintenance management.
Application
The 3RB20/3RB21 solid-state overload relays have been designed for the protection of induction motors in sinusoidal
50/60 Hz voltage networks. The relays are not suitable for the
protection of single-phase AC or DC loads.
The 3RU11 thermal overload relay or the 3RB22/3RB23 solidstate overload relay can be used for single-phase AC loads. For
DC loads we recommend the 3RU11 thermal overload relay.
Ambient conditions
The devices are insensitive to external influences such as
shocks, corrosive environments, ageing and temperature fluctuation.
5
For the temperature range from –25 °C to +60 °C, the
3RB20/3RB21 solid-state overload relays compensate the temperature according to IEC 60947-4-1.
For the 3RB20/3RB21 solid-state overload relays with the sizes
S6, S10 and S12, the upper set value of the setting range must
be reduced for ambient temperatures > 50 °C by a certain factor
(see tables below).
Type
Setting range
Derating factor for the upper set
value for stand-alone installation
at ambient temperature
+50 °C
+60 °C
3RB20 56, 3RB21 56
50 ... 200 A
100 %
100 %
3RB20 66, 3RB21 66
55 ... 250 A
100 %
100 %
3RB20 66, 3RB21 66
160 ... 630 A
100 %
90 %
Type
Setting range
Derating factor for the upper set
value for mounting onto contactor
at ambient temperature
+50 °C
+60 °C
3RB20 56, 3RB21 56
50 ... 200 A
100 %
70 %
3RB20 66, 3RB21 66
55 ... 250 A
100 %
70 %
3RB20 66, 3RB21 66
160 ... 630 A
100 %
70 %
5/52
Siemens LV 1 · 2010
The following optional accessories are available for the
3RB20/3RB21 solid-state overload relays:
• One terminal bracket each for the overload relays size S00
and S0 (sizes S2 to S12 can be installed as stand-alone installation without a terminal bracket)
• One mechanical remote RESET module for all sizes
• One cable release for resetting devices which are difficult to
access (for all sizes)
• One sealable cover for all sizes
• Terminal covers for sizes S2 to S10/S12
• Box terminal blocks for sizes S6 and S10/S12
© Siemens AG 2010
Overload Relays
SIRIUS 3RB2 Solid-State Overload Relays
3RB20, 3RB21 for standard applications
■ Selection and ordering data
3RB20 solid-state overload relays for direct mounting1)2) and stand-alone installation2)3), CLASS 10
3RB20 16-1RB0
Size of
contactor4)
3RB20 26-1QD0
3RB20 36-1UB0
PU (UNIT, SET, M)= 1
PS*
= 1 unit
PG
= 101
3RB20 46-1ED0
Rating for
induction
motor
Rated value5)
Current setting of the
inverse-time
delayed
overload
release
Short-circuit pro- DT
tection with fuse,
type of coordination 2, gL/gG
operational
class6)
kW
A
A
3RB20 56-1FW2
Weight DT
per PU
approx.
Screw terminals
(on auxiliary current
side)
Order No.
3RB20 66-1MF2
Price
per PU
Weight
per PU
approx.
Spring-type terminals (on auxiliary
current side)
Order No.
Price
per PU
kg
kg
Size S001)
S00
0.04 … 0.09
0.1 … 0.4
1
}
3RB20 16-1RB0
0.200 A
3RB20 16-1RD0
0.200
0.12 … 0.37
0.32 … 1.25 2
}
3RB20 16-1NB0
0.200 A
3RB20 16-1ND0
0.200
0.55 … 1.5
1…4
10
}
3RB20 16-1PB0
0.200 A
3RB20 16-1PD0
0.200
1.1 … 5.5
3 … 12
20
}
3RB20 16-1SB0
0.200 A
3RB20 16-1SD0
0.200
Size S01)
S0
0.04 … 0.09
0.1 … 0.4
1
}
3RB20 26-1RB0
0.220 A
3RB20 26-1RD0
0.220
0.12 … 0.37
0.32 … 1.25 2
}
3RB20 26-1NB0
0.220 A
3RB20 26-1ND0
0.220
0.55 … 1.5
1…4
10
}
3RB20 26-1PB0
0.220 A
3RB20 26-1PD0
0.220
1.1 … 5.5
3 … 12
20
}
3RB20 26-1SB0
0.220 A
3RB20 26-1SD0
0.220
3 … 11
6 … 25
35
}
3RB20 26-1QB0
0.220 A
3RB20 26-1QD0
0.220
3 … 11
6 … 25
63
}
3RB20 36-1QB0
0.360 A
3RB20 36-1QD0
0.360
}
3RB20 36-1QW1
0.230 A
3RB20 36-1QX1
0.230
}
3RB20 36-1UB0
0.360 A
3RB20 36-1UD0
0.360
}
3RB20 36-1UW1
0.230 A
3RB20 36-1UX1
0.230
Size S21)3)7)
S2
7.5 … 22
12.5 … 50
80
Size S31)3)7)
S3
7.5 … 22
12.5 … 50
160
}
3RB20 46-1UB0
0.560 A
3RB20 46-1UD0
0.560
11 … 45
25 … 100
315
}
3RB20 46-1EB0
0.560 A
3RB20 46-1ED0
0.560
}
3RB20 46-1EW1
0.450 A
3RB20 46-1EX1
0.450
}
3RB20 56-1FC2
1.030 A
3RB20 56-1FF2
1.030
}
3RB20 56-1FW2
0.690 A
3RB20 56-1FX2
0.690
400
}
3RB20 66-1GC2
1.820 A
3RB20 66-1GF2
1.820
160 … 630 800
}
3RB20 66-1MC2
1.820 A
3RB20 66-1MF2
1.820
Size S62)7)
S6 with
busbar connections
22 … 90
50 … 200
315
S6 with
box terminals
Size S10/S12
2)
S10/S12
22 … 110
and size 14
90 … 450
(3TF68/ 3TF69)
55 … 250
1)
The relays with an Order No. ending with "0" are designed for direct
mounting. With the matching terminal brackets (see "Accessories",
page 5/60) the sizes S00 and S0 can also be installed as stand-alone
units.
2)
The relays with an Order No. ending with "2" are designed for direct
mounting and stand-alone installation. For 3TF68/3TF69 contactors, direct
mounting is not possible.
3)
The relays with an Order No. ending with "1" are designed for stand-alone
installation.
4)
Observe maximum rated operational current of the devices.
5)
Guide value for 4-pole standard motors at AC 50 Hz 400 V. The actual
starting and rated data of the motor to be protected must be considered
when selecting the units.
6)
Maximum protection by fuse for overload relay, type of coordination 2.
For fuse values in conjunction with contactors, see "Technical
specifications" --> "Short-circuit protection with fuses for motor feeders",
see note on Technical Information on page 5/1.
* You can order this quantity or a multiple thereof.
Siemens LV 1 · 2010
5/53
5
Features and technical specifications:
• Overload protection, phase failure protection and unbalance
protection
• Internal power supply
• Auxiliary contacts 1 NO + 1 NC
• Manual and automatic RESET
• Switch position indicator
• TEST function and self-monitoring
© Siemens AG 2010
Overload Relays
SIRIUS 3RB2 Solid-State Overload Relays
3RB20, 3RB21 for standard applications
3RB20 solid-state overload relays for direct mounting1)2) and stand-alone installation2)3), CLASS 20
Features and technical specifications:
• Overload protection, phase failure protection and unbalance
protection
• Internal power supply
• Auxiliary contacts 1 NO + 1 NC
• Manual and automatic RESET
• Switch position indicator
• TEST function and self-monitoring
3RB20 16-2RB0
5
Size of
contactor4)
3RB20 26-2QD0
3RB20 36-2UB0
PU (UNIT, SET, M)= 1
PS*
= 1 unit
PG
= 101
3RB20 46-2ED0
Rating for
induction
motor
Rated value5)
Current setting value
of the
inverse-time
delayed
overload
release
Short-circuit pro- DT
tection with fuse,
type of coordination 2, gL/gG
operational
class6)
kW
A
A
3RB20 56-2FW2
Order No.
3RB20 66-2MF2
Weight DT
per PU
approx.
Screw terminals
(on auxiliary current
side)
Price
per PU
Weight
per PU
approx.
Spring-type terminals (on auxiliary
current side)
Order No.
kg
Price
per PU
kg
Size S001)
S00
0.04 … 0.09
0.1 … 0.4
1
}
3RB20 16-2RB0
0.200 A
3RB20 16-2RD0
0.200
0.12 … 0.37
0.32 … 1.25 2
}
3RB20 16-2NB0
0.200 A
3RB20 16-2ND0
0.200
0.55 … 1.5
1…4
10
}
3RB20 16-2PB0
0.200 A
3RB20 16-2PD0
0.200
1.1 … 5.5
3 … 12
20
}
3RB20 16-2SB0
0.200 A
3RB20 16-2SD0
0.200
Size S01)
S0
0.04 … 0.09
0.1 … 0.4
1
}
3RB20 26-2RB0
0.220 A
3RB20 26-2RD0
0.220
0.12 … 0.37
0.32 … 1.25 2
}
3RB20 26-2NB0
0.220 A
3RB20 26-2ND0
0.220
0.55 … 1.5
1…4
10
}
3RB20 26-2PB0
0.220 A
3RB20 26-2PD0
0.220
1.1 … 5.5
3 … 12
20
}
3RB20 26-2SB0
0.220 A
3RB20 26-2SD0
0.220
3 … 11
6 … 25
35
}
3RB20 26-2QB0
0.220 A
3RB20 26-2QD0
0.220
3 … 11
6 … 25
63
}
3RB20 36-2QB0
0.360 A
3RB20 36-2QD0
0.360
}
3RB20 36-2QW1
0.230 A
3RB20 36-2QX1
0.230
}
3RB20 36-2UB0
0.360 A
3RB20 36-2UD0
0.360
}
3RB20 36-2UW1
0.230 A
3RB20 36-2UX1
0.230
Size S21)3)7)
S2
7.5 … 22
12.5 … 50
80
Size S31)3)7)
S3
7.5 … 22
12.5 … 50
160
}
3RB20 46-2UB0
0.560 A
3RB20 46-2UD0
0.560
11 … 45
25 … 100
315
}
3RB20 46-2EB0
0.560 A
3RB20 46-2ED0
0.560
}
3RB20 46-2EW1
0.450 A
3RB20 46-2EX1
0.450
}
3RB20 56-2FC2
1.030 A
3RB20 56-2FF2
1.030
}
3RB20 56-2FW2
0.690 A
3RB20 56-2FX2
0.690
Size S62)7)
S6 with
busbar
connections
22 … 90
50 … 200
315
S6 with
box terminals
Size S10/S122)
S10/S12
22 … 110
and size 14
90 … 450
(3TF68/ 3TF69)
55 … 250
400
}
3RB20 66-2GC2
1.820 A
3RB20 66-2GF2
1.820
160 … 630
800
}
3RB20 66-2MC2
1.820 A
3RB20 66-2MF2
1.820
1)
The relays with an Order No. ending with "0" are designed for direct
mounting. With the matching terminal brackets (see "Accessories",
page 5/60) the sizes S00 and S0 can also be installed as stand-alone
units.
2)
The relays with an Order No. ending with "2" are designed for direct
mounting and stand-alone installation. For 3TF68/3TF69 contactors, direct
mounting is not possible.
3)
The relays with an Order No. ending with "1" are designed for stand-alone
installation.
4)
Observe maximum rated operational current of the devices.
5)
Guide value for 4-pole standard motors at AC 50 Hz 400 V. The actual
starting and rated data of the motor to be protected must be considered
when selecting the units.
6)
Maximum protection by fuse for overload relay, type of coordination 2.
For fuse values in conjunction with contactors, see "Technical
specifications" --> "Short-circuit protection with fuses for motor feeders",
see note on Technical Information on page 5/1.
7)
The relays with an Order No. with "W" or "X" in penultimate position are
equipped with a straight-through transformer.
* You can order this quantity or a multiple thereof.
5/54
Siemens LV 1 · 2010
© Siemens AG 2010
Overload Relays
SIRIUS 3RB2 Solid-State Overload Relays
3RB20, 3RB21 for standard applications
and stand-alone installation2)3), CLASS 5, 10, 20 and 30 adjustable
Features and technical specifications:
• Overload protection, phase failure protection and unbalance
protection
• Internal ground-fault detection (activatable)
• Internal power supply
• Auxiliary contacts 1 NO + 1 NC
• Manual and automatic RESET
• Electrical remote RESET integrated
• Switch position indicator
• TEST function and self-monitoring
3RB21 13-4RB0
Size of
contactor4)
3RB21 23-4QD0
3RB21 33-4UB0
PU (UNIT, SET, M)= 1
PS*
= 1 unit
PG
= 101
3RB21 43-4ED0
Rating for
induction
motor
Rated value5)
Current setting value
of the
inverse-time
delayed
overload
release
Short-circuit pro- DT
tection with fuse,
type of coordination 2, gL/gG
operational
class6)
kW
A
A
3RB21 53-4FX2
Weight DT
per PU
approx.
Screw terminals
(on auxiliary current
side)
Order No.
3RB21 63-4MC2
Price
per PU
Weight
per PU
approx.
Spring-type terminals (on auxiliary
current side)
Order No.
Price
per PU
kg
kg
Size S001)
S00
0.04 … 0.09
0.1 … 0.4
1
}
3RB21 13-4RB0
0.200 A
3RB21 13-4RD0
0.200
0.12 … 0.37
0.32 … 1.25 2
}
3RB21 13-4NB0
0.200 A
3RB21 13-4ND0
0.200
0.55 … 1.5
1…4
10
}
3RB21 13-4PB0
0.200 A
3RB21 13-4PD0
0.200
1.1 … 5.5
3 … 12
20
}
3RB21 13-4SB0
0.200 A
3RB21 13-4SD0
0.200
Size S01)
S0
0.04 … 0.09
0.1 … 0.4
1
}
3RB21 23-4RB0
0.220 }
3RB21 23-4RD0
0.220
0.12 … 0.37
0.32 … 1.25 2
}
3RB21 23-4NB0
0.220 }
3RB21 23-4ND0
0.220
0.55 … 1.5
1…4
10
}
3RB21 23-4PB0
0.220 }
3RB21 23-4PD0
0.220
1.1 … 5.5
3 … 12
20
}
3RB21 23-4SB0
0.220 A
3RB21 23-4SD0
0.220
3 … 11
6 … 25
35
}
3RB21 23-4QB0
0.220 A
3RB21 23-4QD0
0.220
3 … 11
6 … 25
63
}
3RB21 33-4QB0
0.360 A
3RB21 33-4QD0
0.360
}
3RB21 33-4QW1
0.230 A
3RB21 33-4QX1
0.230
}
3RB21 33-4UB0
0.360 A
3RB21 33-4UD0
0.360
}
3RB21 33-4UW1
0.230 A
3RB21 33-4UX1
0.230
Size S21)3)7)
S2
7.5 … 22
12.5 … 50
80
Size S31)3)7)
S3
7.5 … 22
12.5 … 50
160
}
3RB21 43-4UB0
0.560 A
3RB21 43-4UD0
0.560
11 … 45
25 … 100
315
}
3RB21 43-4EB0
0.560 A
3RB21 43-4ED0
0.560
}
3RB21 43-4EW1
0.450 A
3RB21 43-4EX1
0.450
}
3RB21 53-4FC2
1.030 A
3RB21 53-4FF2
1.030
}
3RB21 53-4FW2
0.690 A
3RB21 53-4FX2
0.690
Size S62)7)
S6 with
busbar
connections
22 … 90
50 … 200
315
S6 with box
terminals
Size S10/S122)
S10/S12
22 … 110
and size 14
90 … 450
(3TF68/ 3TF69)
55 … 250
400
}
3RB21 63-4GC2
1.820 A
3RB21 63-4GF2
1.820
160 … 630
800
}
3RB21 63-4MC2
1.820 A
3RB21 63-4MF2
1.820
1)
The relays with an Order No. ending with "0" are designed for direct
mounting. With the matching terminal brackets (see "Accessories",
page 5/60) the sizes S00 and S0 can also be installed as stand-alone
units.
2)
The relays with an Order No. ending with "2" are designed for direct
mounting and stand-alone installation. For 3TF68/3TF69 contactors, direct
mounting is not possible.
3)
The relays with an Order No. ending with "1" are designed for stand-alone
installation.
4)
Observe maximum rated operational current of the devices.
5)
Guide value for 4-pole standard motors at AC 50 Hz 400 V. The actual
starting and rated data of the motor to be protected must be considered
when selecting the units.
6)
Maximum protection by fuse for overload relay, type of coordination 2.
For fuse values in conjunction with contactors, see "Technical specifications" --> "Short-circuit protection with fuses for motor feeders", see note
on Technical Information on page 5/1.
7)
The relays with an Order No. with "W" or "X" in penultimate position are
equipped with a straight-through transformer.
* You can order this quantity or a multiple thereof.
Siemens LV 1 · 2010
5/55
5
3RB21 solid-state overload relays for direct mounting
1)2)
© Siemens AG 2010
Overload Relays
SIRIUS 3RB2 Solid-State Overload Relays
3RB22, 3RB23 for high-feature applications
■ Overview
1
2
3
9
5
4
6
5
7
5
8
3RB22/3RB23 evaluation module
$ Green LED "READY":
A continuous green light signals that the device is working correctly.
% Red LED "GND FAULT":
A continuous red light signals a ground-fault tripping.
& Red LED "THERMISTOR":
A continuous red light signals an active thermistor trip.
( Red LED "OVERLOAD":
A continuous red light signals an active overload trip; a flickering red
light signals an imminent trip (overload warning).
) Motor current and trip class setting:
Setting the device to the motor current and to the required trip class
dependent on the start-up conditions is easy with the two rotary
switches.
* Selector switch for manual/automatic RESET:
With this switch you can choose between manual and automatic
RESET.
+ Test/RESET button:
Enables testing of all important device components and functions,
plus resetting of the device after a trip when manual RESET is selected.
, Connecting terminals (removable joint block):
The generously sized terminals permit connection of two conductors
with different cross-sections for the auxiliary, control and sensor circuits. Connection is possible with screw connection and alternatively
with spring-type connection.
- 3RB29 85 function expansion module:
Enables more functions to be added, e. g. internal ground-fault detection and/or an analog output with corresponding signals.
3RB29 06 current measuring module
5/56
Siemens LV 1 · 2010
The modular, solid-state overload relays with external power
supply type 3RB22 (with monostable auxiliary contacts) and
type 3RB23 (with bistable auxiliary contacts) up to 630 A (up to
820 A possible with a series transformer) have been designed
for inverse-time delayed protection of loads with normal and
heavy starting (for "Function" see note on Technical
Information on page 5/1) against excessive temperature rises
due to overload, phase unbalance or phase failure. An overload,
phase unbalance or phase failure result in an increase of the motor current beyond the set rated motor current.
This current rise is detected by means of a current measuring
module and electronically evaluated by a special evaluation
module which is connected to it. The evaluation electronics
sends a signal to the auxiliary contacts. The auxiliary contacts
then switch off the load by means of a contactor. The break time
depends on the ratio between the tripping current and set current Ie and is stored in the form of a long-term stable tripping
characteristic (for "Characteristic Curves" see the note on Technical Information on page 5/1). The "tripped" status is signaled
by means of a continuous red "OVERLOAD" LED.
The LED indicates imminent tripping of the relay due to overload,
phase unbalance or phase failure by flickering when the limit
current has been violated. This warning can also be issued as a
signal through auxiliary contacts.
In addition to the described inverse-time delayed protection of
loads against excessive temperature rises, the 3RB22/3RB23
solid-state overload relays also allow direct temperature monitoring of the motor windings (full motor protection) by connection
with broken-wire interlock of a PTC sensor circuit. With this temperature-dependent protection, the loads can be protected
against overheating caused indirectly by reduced coolant flow,
for example, which cannot be detected by means of the current
alone. In the event of overheating, the devices switch off the contactor, and thus the load, by means of the auxiliary contacts. The
"tripped" status is signaled by means of a continuously illuminated "THERMISTOR" LED.
To also protect the loads against high-resistance short-circuits
due to damage to the insulation, humidity, condensed water,
etc., the 3RB22/3RB23 solid-state overload relays offer the possibility of internal ground-fault detection in conjunction with a
function expansion module (for details see "Selection and ordering data"); not possible in conjunction with contactor assembly
for wye-delta starting. In the event of a ground fault the
3RB22/3RB23 relays trip instantaneously. The "tripped" status is
signaled by means of a continuous red "Ground Fault" LED. Signaling through auxiliary contacts is also possible.
After tripping due to overload, phase unbalance, phase failure,
thermistor or ground-fault tripping, the relay is reset manually or
automatically after the recovery time has elapsed (for "Function"
see note on Technical Information on page 5/1). In conjunction
with a function expansion module the motor current measured
by the microprocessor can be output in the form of an analog
signal 4 ... 20 mA DC for operating rotary coil instruments or for
feeding into analog inputs of programmable logic controllers.
With an additional AS-Interface analog module the current values can also be transferred over the AS-i bus system.
The devices are manufactured in accordance with environmental guidelines and contain environmentally friendly and reusable
materials.
They comply with all important worldwide standards and approvals.
© Siemens AG 2010
Overload Relays
SIRIUS 3RB2 Solid-State Overload Relays
3RB22, 3RB23 for high-feature applications
The 3RB22 (monostable) solid-state overload relays are suitable
for the overload protection of explosion-proof motors with "increased safety" type of protection EEx e. The relays meet the requirements of EN 60079-7 (Electrical apparatus for areas subject to explosion hazards – Increased safety "e"); see Chapter 20
"Appendix" --> "Standards and approvals" --> "Type overview
of approved devices for explosion-protected areas (ATEX Explosion Protection)".
EC type test certificate for Group II, Category (2) G/D exists. It
has the number PTB 05 ATEX 3022.
■ Benefits
The most important features and benefits of the 3RB22/3RB23
solid-state overload relays are listed in the overview table (see
"General Data" on page 5/42).
■ Application
Industries
The 3RB22/3RB23 solid-state overload relays are suitable for
customers from all industries who want to guarantee optimum inverse-time delayed and temperature-dependent protection of
their electrical loads (e. g. motors) under normal and heavy
starting conditions (CLASS 5 to CLASS 30), minimize project
completion times, inventories and power consumption, and optimize plant availability and maintenance management.
Application
The 3RB22/3RB23 solid-state overload relays have been designed for the protection of three-phase asynchronous and single-phase AC motors.
If single-phase AC motors are to be protected by the
3RB22/3RB23 solid-state overload relays, the main current
paths of the current measuring modules must be series-connected (for "Schematics" see note on Technical Information on
page 5/1).
Ambient conditions
The devices are insensitive to external influences such as
shocks, corrosive environments, ageing and temperature fluctuation.
For the temperature range from –25 °C to +60 °C, the
3RB22/3RB23 solid-state overload relays compensate the temperature according to IEC 60947-4-1.
Configuration notes for use of the devices below –25 °C or above
+60 °C on request.
■ Accessories
The following optional accessories are available for the
3RB22/3RB23 solid-state overload relays:
• A sealable cover for the evaluation module
• Terminal covers for the current measuring modules size S6
and S10/S12
• Box terminal blocks for the current measuring modules size S6
and S10/S12
• Push-in lugs for screw fixing the 3RB22/3RB23 overload relays
and the 3RB29 06 current measuring modules.
Siemens LV 1 · 2010
5/57
5
"Increased safety" type of protection EEx e according to
ATEX directive 94/9/EC
© Siemens AG 2010
Overload Relays
SIRIUS 3RB2 Solid-State Overload Relays
3RB22, 3RB23 for high-feature applications
■ Selection and ordering data
3RB22/3RB23 solid-state overload relays for full motor protection with screw terminals or spring-type terminals
for stand-alone installation, CLASS 5, 10, 20 and 30 adjustable
Features and technical specifications:
• Overload protection, phase failure protection and unbalance
protection
• External power supply 24 ... 240 V
• Auxiliary contacts 2 NO + 2 NC
• Manual and automatic RESET
• Electrical remote RESET integrated
• 4 LEDs for operating and status displays
Size of contactor
Version
• TEST function and self-monitoring
• Internal ground-fault detection with function expansion module
• Screw terminals or spring-type terminals for auxiliary, control
and sensor circuits
• Input for PTC sensor circuit
• Analog output with function expansion module
DT
PU
(UNIT,
SET, M)
Screw terminals
Order No.
PS*
PG
Price
per PU
Weight
per PU
approx.
kg
Evaluation modules
S00 ... S12
Monostable
}
3RB22 83-4AA1
1
1 unit
101
0.300
Bistable
}
3RB23 83-4AA1
1
1 unit
101
0.300
Version
DT
Spring-type terminals
PU
(UNIT,
SET, M)
PS*
PG
Weight
per PU
approx.
5
3RB2. 83-4AA1
Size of contactor
Order No.
Price
per PU
kg
Evaluation modules
S00 ... S12
Monostable
A
3RB22 83-4AC1
1
1 unit
101
0.300
Bistable
A
3RB23 83-4AC1
1
1 unit
101
0.300
Version
DT
Order No.
PU
(UNIT,
SET, M)
PS*
PG
Weight
per PU
approx.
3RB2. 83-4AC1
Size of contactor
Price
per PU
kg
Function expansion modules
For plugging into evaluation module (1 unit)
S00 ... S12
Analog Basic 1 modules1)
Analog output DC 4 ... 20 mA,
with overload warning
}
3RB29 85-2AA0
1
1 unit
101
0.030
Analog Basic 1 modules1)2)
Analog output DC 4 ... 20 mA,
with internal ground-fault detection and
overload warning
}
3RB29 85-2AA1
1
1 unit
101
0.030
Analog Basic 2 modules1)2)
Analog output DC 4 ... 20 mA,
with internal ground-fault detection and
ground-fault signaling
}
3RB29 85-2AB1
1
1 unit
101
0.030
Basic 1 GF modules2)
with internal ground-fault detection and
overload warning
}
3RB29 85-2CA1
1
1 unit
101
0.030
Basic 2 GF modules2)
with internal ground-fault detection and
ground-fault signaling
}
3RB29 85-2CB1
1
1 unit
101
0.030
Note:
Analog input modules, e. g. SM 331, must be configured for 4-wire
measuring transducers. In this case the analog input module must
not supply current to the analog output of the 3RB22/ 3RB23 relay.
1)
The analog signal DC 4 ... 20 mA can be used for operating rotary coil
instruments or for feeding into analog inputs of programmable logic controllers.
2)
The following information on ground-fault protection refers to sinusoidal
residual currents at 50/60 Hz:
- With a motor current of between 0.3 and 2 times the set current Ie the unit
will trip at a ground-fault current equal to 30 % of the set current.
- With a motor current of between 2 and 8 times the set current Ie the unit
will trip at a ground-fault current equal to 15 % of the set current.
- The response delay amounts to between 0.5 and 1 second.
* You can order this quantity or a multiple thereof.
5/58
Siemens LV 1 · 2010
© Siemens AG 2010
Overload Relays
SIRIUS 3RB2 Solid-State Overload Relays
3RB22, 3RB23 for high-feature applications
Current measuring modules for direct mounting
Size of
Rating
contactor3) for induction
motor
rated value4)
kW
1)
and stand-alone installation1)2)
Current setting
of the inversetime delayed
overload
release
Short-circuit DT
protection
with fuse,
type of coordination 2,
gL/gG operational
class5)
Order No.
Price
per PU
PU
(UNIT,
SET, M)
PS*
PG
Weight
per PU
approx.
kg
A
Size S00/S02)6)
0.09 … 1.1
0.3 … 3
20
}
3RB29 06-2BG1
1
1 unit
101
0.100
1.1 … 11
2.4 … 25
63
}
3RB29 06-2DG1
1
1 unit
101
0.150
S2/S3
5.5 … 45
10 … 100
315
}
3RB29 06-2JG1
1
1 unit
101
0.350
S6 with
busbar
connection
11 … 90
20 … 200
315
}
3RB29 56-2TH2
1
1 unit
101
1.000
}
3RB29 56-2TG2
1
1 unit
101
0.600
}
3RB29 66-2WH2
1
1 unit
101
1.750
S00/S0
3RB29 06-2.G1
Size S2/S32)6)
3RB29 06-2JG1
3RB29 56-2TG2
5
Size S61)6)
S6 with
box terminals
Size S10/S121)
S10/S12
37 … 450
and size
14 (3TF68/
3TF69)
63 … 630
800
3RB29 66-2WH2
Note:
The connecting cable between the current measuring module
and the evaluation module is not included in the scope of supply; please order separately.
1)
The current measuring modules with an Order No. ending with "2" are
designed for direct mounting and stand-alone installation. For
3TF68/3TF69 contactors, direct mounting is not possible.
2)
The current measuring modules with an Order No. ending with "1" are
designed for stand-alone installation.
3)
Observe maximum rated operational current of the devices.
4)
Guide value for 4-pole standard motors at AC 50 Hz 400 V. The actual
starting and rated data of the motor to be protected must be considered
when selecting the units.
5)
Maximum protection by fuse for overload relay, type of coordination 2.
For fuse values in conjunction with contactors, see "Technical
specifications" --> "Short-circuit protection with fuses for motor feeders",
see note on Technical Information on page 5/1.
6)
The modules with an Order No. with "G" in penultimate position are
equipped with a straight-through transformer.
■ Accessories
Size of
contactor
Version
DT
Order No.
Price
per PU
PU
(UNIT,
SET, M)
PS*
PG
Weight
per PU
approx.
kg
Connecting cables (essential accessory)
For connection between evaluation module and
current measuring module
S00 ...S3
• Length 0.1 m
}
(only for mounting of the evaluation module directly onto the current measuring module)
3RB29 87-2B
1
1 unit
101
0.010
}
3RB29 87-2D
1
1 unit
101
0.020
S00 ... S12 • Length 0.5 m
3RB29 87-2.
For more accessories, see page 5/60.
* You can order this quantity or a multiple thereof.
Siemens LV 1 · 2010
5/59
© Siemens AG 2010
Overload Relays
SIRIUS 3RB2 Solid-State Overload Relays
Accessories
■ Overview
Overload relays for standard applications
Overload relays for high-feature applications
The following optional accessories are available for the
3RB20/3RB21 solid-state overload relays:
• One terminal bracket each for the overload relays size S00
and S0 (sizes S2 to S12 can be installed as stand-alone installation without a terminal bracket)
• One mechanical remote RESET module for all sizes
• One cable release for resetting devices which are difficult to
access (for all sizes)
• One sealable cover for all sizes
• Terminal covers for sizes S2 to S10/S12
• Box terminal blocks for sizes S6 and S10/S12
The following optional accessories are available for the
3RB22/3RB23 solid-state overload relays:
• A sealable cover for the evaluation module
• Terminal covers for the current measuring modules size S6
and S10/S12
• Box terminal blocks for the current measuring modules size S6
and S10/S12
• Push-in lugs for screw fixing the 3RB22/3RB23 overload relays
and the 3RB29 06 current measuring modules.
■ Selection and ordering data
Version
Size
DT
Price €
Order No.
PU
(UNIT,
SET, M)
PS*
PG
Weight
per PU
approx.
kg
Terminal brackets for stand-alone installation1)
S00
}
3RB29 13-0AA1
1
1 unit
101
0.060
S0
}
3RB29 23-0AA1
1
1 unit
101
0.080
3RU19 00-1A
1
1 unit
101
0.038
5
For separate mounting of the overload
relays; screw and snap-on mounting onto
TH 35 standard mounting rail
3RB29 .3-0AA1
Mechanical RESET2)
Resetting plungers, holders and formers S00 ... }
S10/S12
3RU19 00-1A
with pushbutton and
extension plunger
Pushbuttons with extended stroke
(12 mm), IP65, Ø 22 mm
B
3SB30 00-0EA11
1
1 unit
102
0.020
Extension plungers
For compensation of the distance between
a pushbutton and the unlatching button of
the relay
A
3SX1 335
1
1 unit
102
0.004
• Length 400 mm
}
3RU19 00-1B
1
1 unit
101
0.063
• Length 600 mm
}
3RU19 00-1C
1
1 unit
101
0.073
Cable releases with holder for RESET2)
For Ø 6.5 mm holes
in the control panel;
max. control panel thickness 8 mm
S00 ...
S10/S12
3RU19 00-1.
1)
Only for 3RB20/3RB21.
2)
Only for 3RB20/3RB21. The accessories are identical to those of the
3RU11 thermal overload relays.
* You can order this quantity or a multiple thereof.
5/60
Siemens LV 1 · 2010
© Siemens AG 2010
Overload Relays
SIRIUS 3RB2 Solid-State Overload Relays
Accessories
Version
Size
DT
Order No.
Price
per PU
PU
(UNIT,
SET, M)
PS*
PG
Weight
per PU
approx.
kg
Sealable covers
For covering the setting knobs
• For 3RB20/3RB21 for standard
applications
S00 ...
S10/S12
}
3RB29 84-0
1 10 units
101
0.020
• For 3RB22/3RB23 for high-feature
applications
--
}
3RB29 84-2
1 10 units
101
0.050
• Length 55 mm1)
S3
}
3RT19 46-4EA1
1
1 unit
101
0.040
• Length 100 mm
S6
}
3RT19 56-4EA1
1
1 unit
101
0.070
• Length 120 mm
S10/S12
}
3RT19 66-4EA1
1
1 unit
101
0.130
• Length 20.6 mm1)
S2
}
3RT19 36-4EA2
1
1 unit
101
0.020
• Length 20.8 mm1)
S3
}
3RT19 46-4EA2
1
1 unit
101
0.025
• Length 25 mm
S6
}
3RT19 56-4EA2
1
1 unit
101
0.030
• Length 30 mm
S10/S12
}
3RT19 66-4EA2
1
1 unit
101
0.040
Covers for screw terminals
S6
between contactor and overload relay,
S10/S12
without box terminals (1 unit required per
combination)
}
3RT19 56-4EA3
1
1 unit
101
0.020
}
3RT19 66-4EA3
1
1 unit
101
0.060
S62)
}
3RT19 55-4G
1
1 unit
101
0.230
S6
}
3RT19 56-4G
1
1 unit
101
0.260
S10/S12
}
3RT19 66-4G
1
1 unit
101
0.676
For screw fixing of 3RB22/3RB23 overload relays
--
}
3RP19 03
1 10 units
101
0.002
For screw fixing the 3RB29 06 current
measuring modules
(2 units are required per module)
S00 ... S3 A
3RB19 00-0B
100 10 units
101
0.100
Can be
used for:
Auxiliary
circuit
connections
8WH9 200-0AA00
1 10 units
044
0.032
Terminal covers
Covers for cable lugs and busbar connections
3RT19 36-4EA2
The figures show mounting on the contactor
Covers for box terminals
Box terminal blocks
For round and ribbon cables
• Up to 70 mm2
• Up to 120 mm
2
• Up to 240 mm2
For technical specifications for conductor cross-sections see note on Technical
Information on page 5/1.
3RT19 5.-4G
Push-in lugs
3RP19 03
3RB19 00-0B
Tools for opening spring-type terminals by hand
Screwdrivers,
2.5 mm x 0.4 mm, length approx.
160 mm; green, suitable for a max. conductor cross-section of 1.5 mm2
1)
Only for 3RB20/3RB21. The accessories are identical to those of the
3RU11 thermal overload relays.
2)
In the scope of supply for 3RT10 54-1 contactors (55 kW).
C
* You can order this quantity or a multiple thereof.
Siemens LV 1 · 2010
5/61
5
3RT19 46-4EA1
© Siemens AG 2010
Overload Relays
SIRIUS 3RB2 Solid-State Overload Relays
Accessories
Version
Size/
Color
Use
DT
Order No.
Price
per PU
PU
(UNIT,
SET, M)
PS*
PG
Weight
per PU
approx.
kg
Tools for opening Cage Clamp terminals
Screwdrivers
3.5 mm x 0.5 mm,
Green, partially
length approx.
insulated
175 mm; suitable for a Green
max. conductor crosssection of 2.5 mm2
8WA2 803
Main and
C
auxiliary circuit connec- C
tions
8WA2 880
1
1 unit
041
0.034
8WA2 803
1
1 unit
041
0.024
NSB0_01429b
Blank labels
3RT19 00-1SB10
Unit labeling plates
for SIRIUS devices
20 mm x 7 mm,
pastel turquoise
C
3RT19 00-1SB20
100
340 units
101
0.200
Inscription labels for
sticking
For SIRIUS devices
19 mm x 6 mm, 3RB2,
pastel turquoise 3RU11
D
3RT19 00-1SB60
100 3060 units
101
15.000
19 mm x 6 mm,
zinc yellow
C
3RT19 00-1SD60
100 3060 units
101
12.000
Computer labeling systems
For individual inscription of unit labeling
plates
Obtainable from:
murrplastik Systemtechnik GmbH
5
www.murrplastik.de
* You can order this quantity or a multiple thereof.
5/62
Siemens LV 1 · 2010
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