Pass & Seymour BZ50 Wattstoppe...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$125.39
$81.94
Pass & Seymour BZ50 Wattstopper Universal Voltage Power Pack, 24 VDC Auto On/Off

Pass & Seymour BZ50 Wattstopper Universal Voltage Power Pack, 24 VDC Auto On/Off

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Model: PAS-BZ-50

In Stock (leaves warehouse same day if ordered before 3pm ET)

$125.39
$81.94
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Pass & Seymour BZ50 Wattstopper Universal Voltage Power Pack, 24 VDC Auto On/Off

The Pass & Seymour BZ50 Wattstopper Power Pack is a 24 VDC universal voltage, self-contained power supply relay system designed for auto on/off lighting control applications. It features a 1/2" snap-in nipple for quick attachment to standard electrical enclosures through 1/2" knockouts, and it is UL 2043 plenum rated for cost-effective installation in plenum spaces. The unit's efficient switching power supply optimizes current output based on the number of connected sensors, making it a reliable choice for lighting control retrofits and new installations.

Key Features

  • Mounting: 1/2" snap-in nipple attaches to standard electrical enclosures through 1/2" knockouts for a quick, tool-minimal installation.
  • Universal Voltage Input: 24 VDC universal voltage power pack with auto on/off operation for automated lighting control circuits.
  • Self-Contained Relay System: Integrated power supply and relay system simplifies wiring and reduces the number of separate components needed at the enclosure.
  • Status Indication: Onboard LED indicates the status of the relay or signals a low-voltage overcurrent condition for fast troubleshooting.
  • Zero Crossing Circuitry: Switches at the zero-crossing point of the AC waveform to improve reliability and extend product life.
  • Efficient Switching Power Supply: Optimizes current output based on the number of connected sensors for efficient, right-sized power delivery.
  • Finish/Rating: UL 2043 plenum rated for cost-effective installation in return-air plenum spaces.

Certifications & Compliance

  • UL 2043 Plenum Rated
  • Meets RoHS Materials Restrictions

Technical Specifications

  • Country Of Origin: China
  • Product Length: 2.916 in
  • Product Line: Pass & Seymour
  • Product Width: 1.673 in
  • Product Depth: 1.634 in

Typical Applications

  • Automatic Lighting Control Circuits
  • Occupancy Sensor-Driven Relay Switching
  • Commercial and Industrial Electrical Enclosures
  • Plenum-Space Installations
  • Retrofit and New-Construction Lighting Projects

Why Pass & Seymour?

Pass & Seymour's Wattstopper BZ50 power pack combines a self-contained relay design, zero crossing circuitry, and UL 2043 plenum-rated construction to deliver dependable, code-compliant performance for lighting control installations. Its RoHS-compliant materials and LED status indication give electrical professionals a power pack built for long service life and straightforward field diagnostics.

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Manufacturer Resources

Spec Sheet

Product Specs

Product Length:
2.916 in
Product Line:
Pass & Seymour
Product Width:
1.673 in
Product Depth:
1.634 in
Department:
Electrical
Product Group:
Wiring Devices
Product Type:
Power Pack
Product Subgroup:
Lighting Controls & Sensors

Pass & Seymour PAS-BZ-50 – Frequently Asked Questions

1) Can the Pass & Seymour BZ50 power pack be installed above a ceiling in a return-air plenum?
Yes. The BZ50 is UL 2043 plenum rated, so it can be mounted in return-air plenum space, which is where most occupancy sensor power packs end up on a commercial job. That rating is what keeps you from having to run the relay down into an accessible box below the ceiling.
2) How does the BZ50 power pack mount to a junction box?
It mounts with a 1/2 inch snap-in nipple that pushes through a standard 1/2 inch knockout on an electrical enclosure. No separate connector or bracket is needed, and the body itself sits outside the box. Overall size is 2.916 x 1.673 x 1.634 inches, so confirm you have that much clearance above the box before you commit to a location.
3) What low voltage output does the BZ50 supply to occupancy sensors?
The BZ50 supplies 24 VDC to the sensors on the low voltage side, so it pairs with low voltage occupancy sensors that call for 24 VDC class 2 power. Its switching power supply adjusts current output to the number of sensors connected, so you are not oversizing the supply for a single-sensor room.
4) Do I need a separate relay with the BZ50, or is one built in?
The relay is built in. The BZ50 is a self-contained power supply and relay in one housing, so a single device both powers the low voltage sensors and switches the line voltage lighting load. That is one less component to fit in the enclosure and fewer field connections to make.
5) What does the LED on the Pass & Seymour BZ50 power pack indicate?
The onboard LED shows relay status and also flags a low voltage overcurrent condition. On a troubleshooting call that tells you quickly whether the relay is energized or whether something on the sensor side, usually a shorted or miswired low voltage run, is pulling too much current.
6) Is this power pack suitable for an occupancy sensor retrofit in an existing building?
Yes, it is built for both retrofit and new construction lighting control work. Because it snaps into an existing 1/2 inch knockout on the fixture whip box or a j-box you already have, you can add automatic on/off control to a circuit without reworking the enclosure. Zero crossing switching is used on the relay, which is aimed at relay life on repeated daily cycling in offices, corridors and restrooms.
7) Does the BZ50 give automatic on as well as automatic off?
It is an auto on/off device, meaning the sensor signal both turns the lights on when the space is occupied and drops them when it vacates. If your project spec calls for manual-on (vacancy) operation, that behavior comes from the sensor or wall switch you pair it with, not from the power pack.
8) Is the BZ50 part of the Wattstopper line and will it work in a Wattstopper control system?
It is the Wattstopper BZ50 power pack sold under the Pass & Seymour product line, both Legrand brands. It is the standard 24 VDC power pack used behind Wattstopper low voltage occupancy sensors, so it drops into that ecosystem without an adapter.
9) Is the Pass & Seymour BZ50 RoHS compliant, and where is it made?
The BZ50 meets RoHS materials restrictions, which matters on institutional and sustainability-driven specs. Country of origin is China.
How fast can I get the Pass & Seymour PAS-BZ-50 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Pass & Seymour PAS-BZ-50 come with a warranty?
Absolutely. The Pass & Seymour PAS-BZ-50 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Pass & Seymour PAS-BZ-50?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Pass & Seymour PAS-BZ-50 from ZenSupply?
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