The PP16 SHUNT relay pack operates as an automatic bypass shunt for control devices (such as other relay packs, toggle switches and phase dimming packs) that are controlling emergency powered lighting loads. The relay is open when normal power is present but will latch closed if normal power is lost. An elongated chase nipple facilitates attachment directly to a junction box or fixture through a ½ inch knockout. A push button is also provided which allow users the ability to test the emergency operation. Features Color: Red Voltage: 120/277V Mounting: 1/2” knockout (7/8” hole) on box or fixture Relay Type: Latching Circuit Protection: External Fault Protection Automatically overrides emergency lights on upon loss of Normal Power circuit Test button Mounting via chase nipple Plenum rated Includes fuse integrated to relay wirelead for protection from load faults Meets NEMA410 ratings for LED/electronic ballast inrush Dimensions Width: 2.53" Height: 3.38" Depth: 1.83" Warranty 5-Year Limited Warranty Document Spec Sheet Instruction Sheet Labels