WattStopper S120277/347E-P Auxiliary Relay Pack

Description:

The WattStopper S120/277/347E-P Auxiliary Relay Pack is used in low-voltage lighting control and building automation systems to provide isolated relay switching for occupancy sensors and other control devices. Commonly installed in commercial buildings, offices, schools, and industrial facilities, it enables reliable control of lighting and HVAC loads without an integrated transformer power supply. Maintenance personnel, electrical contractors, and system integrators use the WattStopper S120/277/347E-P for replacements, retrofits, panel upgrades, and expansion of automated lighting control systems.

Applications:

The WattStopper S120/277/347E-P Auxiliary Relay Pack is commonly used in office buildings, educational facilities, healthcare environments, warehouses, retail spaces, and commercial lighting control installations. The WattStopper S120/277/347E-P interfaces with compatible 24 VDC occupancy sensors and control devices to switch lighting circuits, fans, pumps, and other electrical loads requiring isolated relay operation.

Technical Specifications:

• Brand: WattStopper
• Part Number: S120/277/347E-P
• Product Type: Auxiliary Relay Pack
• Input Voltage: 120/277/347 VAC, 60 Hz
• Relay Type: Isolated relay (no transformer power supply)
• Ballast Load Rating: Up to 20 A (120/277 VAC), 15 A (347 VAC)
• Incandescent Load Rating: 13 A (120 VAC)
• Motor Rating: 1 HP (120 VAC)
• Mounting: 1/2 in. snap-in nipple for standard electrical enclosures
• Enclosure: UL 2043 plenum-rated housing
• Application: Lighting control and HVAC load switching
• Compatible With: WattStopper 24 VDC occupancy sensors and lighting control systems
• Frequency: 60 Hz

Common Replacements:

• WattStopper BZ-50 Power Pack
• WattStopper BZ-150 Power Pack
• WattStopper B347D-P Power Pack