4-Hour Spring-Wound Timer

4HR S/W T/S W/O HOLD SPST

Intermatic #

FD4HW

UPC

078275073982

Intermatic FD4HW is a spring-wound countdown timer switch, decorator style, rated 125-277 VAC at 50/60 Hz, single-pole, single-throw (SPST), with a 4-hour maximum countdown and built without hold, finished in white. Electricians and contractors install this timer switch in place of a standard wall switch to automatically shut off a connected load, such as a bathroom exhaust fan, heat lamp, or other fixture, after a set interval instead of leaving it running indefinitely. The mechanism is wound by hand to the desired setting and counts back down mechanically, switching the load off at the end of the interval. Its single-pole, single-throw contact simply makes or breaks a single circuit conductor.