Intermatic | FF15MC | Spring-Wound 15-Minute Auto-Off Timer, 125-277 VAC SPST

The Intermatic FF15MC is a heavy-duty, spring-wound countdown timer designed to replace a standard wall switch and automatically shut off loads after a preset interval of up to 15 minutes. With compatibility across 125-277 VAC and a rugged construction, this timer is ideal for applications such as lighting, fans, motors or other electrical equipment where automatic shut-off enhances energy efficiency and safety. 

Key Features

• Countdown interval: up to 15 minutes maximum (single range, no hold feature) 

• Voltage rating: 125-277 VAC, 50/60 Hz, SPST (single-pole single throw) 
  

• Spring-wound mechanism—does not require external power for the timing function 

• Fits standard 1-gang wall box or multi-gang switch box; decoration plate included for finished look 

• Indoor use standard (Note: not intended for life-safety loads like saunas or sun-lamp circuits) 

Product Overview
The Intermatic FF15MC offers a straightforward, reliable solution for controlling the manual duration of electrical loads in both commercial and residential settings. Because it uses a spring-wound mechanism, it operates independently of the load’s control power, making it very useful in situations where long “on” times are undesirable or where an automatic shut-off improves efficiency or safety.

Installation is simple: the unit replaces a standard wall switch, connects via teeter type terminals, and allows a user to manually twist the knob past the desired time mark — when activated, the timer starts and turns the load off at the end of the interval. Typical use-cases include bathroom fans, attic vents, lighting circuits, pool area lights, or other usage where timed control is advantageous. The broad voltage range (125-277 VAC) and SPST configuration make it versatile across many applications.

For your e-commerce catalogue, position this timer under “Time Control Switches & Accessories” with emphasis on its “15-minute auto-off”, “spring-wound—no external timer power required”, and “professional-grade 125-277 VAC compatibility”. Mention that it offers energy savings and helps prevent inadvertent long-run equipment operation.