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Leviton OSP20-RD0 Power Pack with Dry Contact Relay, Black
The Leviton OSP20-RD0 is a power pack with an integrated dry contact relay, engineered to bridge line-voltage lighting and control circuits with low-voltage occupancy sensing and switching systems. It accepts a 120/220/277-Volt AC input at 60-Hz, converting it to a regulated 24-Volt DC low-voltage output for sensor and control loads. The unit draws 5-Milli-Amp at 24-Volt DC on its input side and supplies up to 150-Milli-Amp at 24-Volt DC on its output side, making it suitable for powering occupancy sensors, relays, and other low-voltage control devices in commercial lighting control installations. Finished in black, the OSP20-RD0 is designed for straightforward integration into new or retrofit lighting control panels and enclosures.
Key Features
- Multi-Voltage Input: Accepts 120/220/277-Volt AC at 60-Hz, allowing a single power pack to be specified across multiple line-voltage systems.
- Dry Contact Relay: Built-in dry contact relay enables isolated switching of lighting loads from low-voltage control signals.
- Low-Voltage Input Draw: Draws only 5-Milli-Amp at 24-Volt DC on the control input side, minimizing load on connected sensor circuits.
- Low-Voltage Output Capacity: Delivers up to 150-Milli-Amp at 24-Volt DC output, sufficient to power occupancy sensors and auxiliary low-voltage control devices.
- Finish: Black housing for consistent appearance within lighting control enclosures and panels.
- Leviton Build Quality: Manufactured by Leviton for reliable operation in commercial lighting control applications.
Technical Specifications
- Input Voltage: 120/220/277-Volt AC at 60-Hz
- Input Draw: 5-Milli-Amp at 24-Volt DC
- Output: 150-Milli-Amp at 24-Volt DC
- Relay Type: Dry Contact Relay
- Color: Black
Typical Applications
- Commercial Lighting Control Systems
- Occupancy and Vacancy Sensor Power Supply
- Line-to-Low-Voltage Control Interfacing
- New Construction and Retrofit Control Panels
- Multi-Voltage Building Electrical Systems
Why Leviton?
Leviton engineers its power packs to handle multiple line-voltage inputs and deliver dependable low-voltage output for lighting control components, making the OSP20-RD0 a versatile choice for interfacing occupancy sensors and relays with 120/220/277-Volt AC systems. Its dry contact relay and defined input/output current ratings give electrical professionals a predictable, code-friendly component for commercial lighting control projects.
Manufacturer Resources
Product Specs
- list_batch:
- LEV-20260924
- Product Type:
- Power Pack
- Voltage Rating:
- 120/220/277V
- Amperage Rating:
- 5mA Input / 150mA Output at 24V DC
- Department:
- Electrical
- Product Subgroup:
- Lighting Controls & Sensors
- Product Color:
- Black
- Product Group:
- Wiring Devices
Leviton OSP20-RD0 – Frequently Asked Questions
1) Will the Leviton OSP20-RD0 power pack work on a 277V lighting circuit?
Yes. The OSP20-RD0 accepts 120, 220, or 277 volts AC at 60 Hz on the line side, so the same part number can be specified across mixed-voltage buildings without stocking a separate pack per circuit voltage. It converts that input to a regulated 24V DC low-voltage supply for the control side.
2) How many occupancy sensors can one Leviton OSP20-RD0 power pack supply?
Budget by current. The OSP20-RD0 delivers up to 150 mA at 24V DC on its low-voltage output, so add up the 24V DC draw of every sensor and control device on the run and keep the total at or under 150 mA. If the sensor count pushes past that, add a second power pack rather than overloading the one.
3) What does the dry contact relay in the OSP20-RD0 actually do?
It gives you an isolated set of switching contacts. The low-voltage sensor signal operates the relay, and the relay switches the line-voltage lighting circuit without any electrical connection between the two sides. That isolation is what lets a 24V DC occupancy sensor control a 120, 220, or 277 volt load safely, and it is why this pack suits interfacing third-party control gear as well as Leviton sensors.
4) Is the Leviton OSP20-RD0 suitable for a retrofit, or only new construction?
Both. The OSP20-RD0 is built to drop into new or retrofit lighting control panels and enclosures, and because it takes any of 120, 220, or 277 volts AC it can go into an existing building without first confirming which line voltage that panel runs.
5) What is the control-side current draw on the Leviton OSP20-RD0?
5 mA at 24V DC on the input side. That matters when you are daisy-chaining several packs off a shared low-voltage control bus: each one adds only 5 mA of load, so the sensor circuit driving them stays well inside its own capacity.
6) What part number and color should I order for the Leviton dry contact power pack?
Order Leviton OSP20-RD0. It ships in black, and it is a single-configuration item, so there is no voltage, color, or output variant to specify on the purchase order.
7) Will the OSP20-RD0 run on a 50 Hz supply?
The OSP20-RD0 is rated for 60 Hz service at 120, 220, or 277 volts AC. For a 50 Hz system, specify a power pack rated for that frequency instead.
How fast can I get the Leviton OSP20-RD0 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 Leviton OSP20-RD0 come with a warranty?
Absolutely. The Leviton OSP20-RD0 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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