WattStopper A120C-P Power Pack
The WattStopper A120C-P is a 120-volt power pack designed for use with standard occupancy sensors to interface with HVAC systems and other building control applications. It contains a single pole, double throw (SPDT) isolated relay with both normally open (NO) and normally closed (NC) outputs, enabling flexible integration with building automation systems.
Key Specifications
- Model: A120C-P
- Voltage: 120V AC
- Current Rating: 100 mA
- Relay Type: Single pole, double throw (SPDT) isolated
- Outputs: NO and NC
- Dimensions: 2.5 H x 3 W x 3.75 D in.
- Material: Plastic
Features
- SPDT isolated relay with both normally open and normally closed outputs
- Designed for use with standard occupancy sensors for HVAC and building system interfacing
- Load ratings are lower than standard power packs — verify compatibility before installation
- Available contact ratings include 8NO/5NC, 5NO/3NC, and 1NO/2NC configurations
Applications
Used in commercial building automation applications to interface occupancy sensors with HVAC systems, lighting controls, or other building systems requiring relay-based switching. Suitable for offices, conference rooms, and commercial spaces implementing occupancy-based HVAC or equipment control strategies.




