universal voltage power pack

universal voltage power pack
WATTSTOPPER®
SENSORS POWER PACKS
UNIVERSAL VOLTAGE POWER PACK
BZ-150
High-efficiency switching
power supply
Hold-on and hold-off inputs
Overcurrent protection
(low-voltage)
Plenum rated
120/277VAC, 50/60Hz
Zero crossing for reliability
and increased product life
Auto-ON or Manual-ON
operating mode
Description
Manual On and Bi-level Switching
The BZ-150 Universal Voltage Power Pack is full featured and
can provide 24 VDC operating voltage to Wattstopper’s lowvoltage occupancy sensors. In addition, the BZ-150 enables
manual-on, hold-on, hold-off and load shed applications when
used with lighting control panels or building management
systems. This device is constructed with environmentally
friendly materials and is RoHS-compliant
Energy codes require automatic off. Some codes and EPAct
require bi-level switching. The BZ-150 meets both of these
requirements, while seamlessly integrating manual on for
maximum energy savings. When used with a low-voltage wall
switch, Auto ON and Manual ON can be selected while in the
field by using the conveniently located dip switch on the front.
Combining switches, power packs and sensors provides easy
and cost-effective code-compliant solutions.
Operation
The BZ-150 consists of a high-efficiency switching power
supply and a high-current relay. It has an input of 120/277 VAC,
50/60Hz, and an output of 24VDC, 225mA. It turns the connected
load on and off automatically based on occupancy sensor input,
or manually with a low-voltage momentary switch. The dip
switch setting allows the user to select Auto ON or Manual ON
as the operating mode. Additional low-voltage inputs provide
hold-on and hold-off features for broader applications.
Features
• Self-contained power supply relay system
• Efficient switching power supply providing optimized current
output based on number of sensors
• LED indicates status of relay or if there is a low-voltage
overcurrent
• Hold-on and hold-off inputs integrate with BMS, lighting
control panels & other building systems
• Integrates with low-voltage momentary switch to control any
24VDC occupancy sensor
WWW.LEGRAND.US/WATTSTOPPER
Applications
The BZ-150 can control lighting circuits, self-contained air
conditioners, pumps, fans, motors, VAV systems, motorized
damper controls and setback thermostats. By using two lowvoltage switches, a ceiling sensor and two BZ-150s (one set
to Auto ON and one set to Manual ON) bi-level switching with
manual-on operation can be achieved. The hold-on input is ideal
for retail and commercial facilities that want to override an
occupancy sensor and force lighting on during normal business
hours. After hours, a time clock signals the BZ-150 to cancel
the hold-on lighting mode, allowing the sensor to resume
control. The hold-off input can be used for load shedding or
security systems.
•
•
•
•
•
The product meets the materials restrictions of RoHS
Provides auto-on or manual-on field-selectable operating mode
Zero crossing circuitry for reliability and increased product life
UL 2043 plenum rated for cost-effective installation
1/2” snap-in nipple attaches to standard electrical
enclosures through 1/2” knockouts
• 14 AWG wires on the relay for 20A operation
• BAA/TAA-compliant models available
Specifications
•
•
•
•
•
120/277VAC, 50/60Hz voltage input
Secondary voltage of 24 VDC
Secondary output of 225 mA (with relay connected)
Low-voltage leads are rated for 300 volts
UL-rated 94 V-O grey plastic enclosure
• Dimensions: 1.6” x 2.75” x 1.6” (40.6mm x 69.9mm x 40.6mm)
H x W x D with a 1/2“ (12.7mm) snap-in nipple
• UL and cUL listed
• Five year warranty
Installation & Wiring
Installation Diagram
Wiring with Occupancy Sensor
Power
Pack
White
Neut.
Hot
High voltage connection
made inside J-box
120VAC
277VAC
Power Pack
Red
Black
Blue
Black
Dry
Contact
Hold ON
Red
Orange
Grey
Low Voltage Wires
+12-24VDC In
Brown
Momentary Switch (optional)
Low-voltage Momentary Switch Options
White
Red Lighting
Load (A)
BZ-150
(A)
Red
AUTO ON
Grey
Blue
Black
Red
Low Voltage Wires
Orange
Any 3-Wire
24VDC
Sensor
+24VDC
Hold OFF
Installation Diagram
120VAC Black
Hot
277VAC
Control
Common
+12-24VDC In
Manual-on & Bi-level Switching
Neut.
Lighting
Load
Red
By using two lowvoltage switches, a
ceiling sensor and
two BZ-150s (one set
to Auto ON and one
set to Manual ON)
bi-level
switching with
manual-on operation
can be achieved.
2-wire Push Button
Grey
Manual ON
3-wire Momentary, DCC2
Grey
Manual ON
Install
Jumper
Wire
Red
24VDC
Red
24VDC
Two-wire Switch
Three-wire Switch
Multi-button Switch, LVSW-101
Donotnot
or
Do
useuse
pilotpilot
or locator
locator
connects
lightlight
connections
Grey
Manual ON
S(x)
Red
24VDC
Com
Multibutton Switch
Momentary Switch (A)
Brown
Control
Common
+24VDC
Any 3-Wire
24VDC
Sensor
Hold-off & Hold-on Applications
Load Shed (Hold-off)
Application
for Open
Spaces
Lighting
RedOffice
White
BZ-150
Neut.
Grey
Low Voltage Wires
Blue
Orange
Red
MANUAL ON
Black
120VAC Black
277VAC
Red
Hot
Retail (Hold-on) Application
Load (B)
(B)
Momentary Switch (B)
Brown
The occupancy sensor connected to each BZ-150 keeps all lights on when the space
is occupied. When the load shed command is given (by utility meter, BMS, etc.),
lights connected to BZ2 are held off. Remaining lights (connected to BZ1) are still
controlled by occupancy sensor.
During store hours, a signal from a time clock to the BZ-150 holds lights on,
regardless of occupancy. After hours, the clock schedule cancels the hold-on
and occupancy sensor control takes over.
Ordering Information
Load Ratings
Catalog #
BZ-150
BZ-150-U
Input Voltage Ballast(A) Incan(A)
120-277VAC;
50/60Hz
20
20
Motor
Output
1 HP
120/250 VAC-rated
24 VDC
225 mA w/relay connected
For a complete listing of Multibutton
Low-voltage and Momentary Toggle
Switches that will provide manual-on
switching with the BZ-150, please refer
to the product cut sheets in the section
on Lighting Control Systems.
-U = BAA/TAA compliant. Product is
compliant with Buy American Act and
Trade Agreement Act
1. All Wattstopper power packs should be installed in accordance with state. local, and national electrical codes and requirements.
2. Power packs are designed to attach to existing or new electrical enclosures with .5” 125.40mmJ knockout (check electrical codes in your area).
3. Most applications require UL-listed, 18-22 AWG, 3-conductor, Class 2 cables for low-voltage wiring. For plenum return ceilings use UL-listed plenum-approved cables.
WWW.LEGRAND.US/WATTSTOPPER
Pub. No. 27405 Rev. 08/2016
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