Intermatic
Intermatic FF15MH Spring-Wound Timer 15 Min SPST Silver
Spring-wound timer automatically limits run time to 15 minutes for energy-consuming loads
- 15-minute spring-wound timing limits energy use
- SPST single-pole switching controls one circuit
- 1 hp at 120 V handles motor loads
- 2 hp at 240 V supports higher-power equipment
- cCSAus and RU listings confirm safety compliance
Spring-Wound Timer for Energy Loads
The Intermatic FF15MH is a spring-wound timer designed to automatically limit the operating time of energy-consuming loads. It uses a mechanical 15-minute cycle and a single-pole single-throw switching action. The unit carries cCSAus and RU standards markings for compliance. It suits installations that need a simple, non-electronic time control.
Sustained Operation Behaviour
The timer relies on a stored mechanical spring rather than an electrical supply for its timing function. This means the 15-minute countdown proceeds consistently regardless of line voltage variations or power interruptions. The contacts are rated for 1 hp at 120 V and 2 hp at 240 V, allowing direct control of motor loads within those limits during the full winding period.
Interface and Practical Limits
The device provides a single-gang SPST contact set that opens at the end of the wound interval. It does not offer multiple circuits, adjustable timing beyond the fixed 15-minute range, or electronic programming features. Installation is limited to applications where a single mechanical timing cycle and the stated horsepower ratings meet the load requirements.
Highlights
- 15-minute spring-wound timing limits energy use
- SPST single-pole switching controls one circuit
- 1 hp at 120 V handles motor loads
- 2 hp at 240 V supports higher-power equipment
- cCSAus and RU listings confirm safety compliance
Specifications
| Brand | INTERMATIC |
|---|
Questions about this item
How much heat does the spring-wound timer generate when it runs all day?
The timer uses a mechanical spring-wound mechanism with no motor, so it produces no measurable heat during continuous operation.
What electrical supply must I already have for the 1 hp at 120 V or 2 hp at 240 V ratings to apply?
You need a single-phase 120 V or 240 V circuit protected by a suitable breaker and wired to the timer’s SPST contacts.
Will the timer fit in the same single-gang enclosure I use for older Intermatic mechanical timers?
Yes, it is a one-gang device with standard mounting holes, so it drops into existing single-gang boxes used for earlier spring-wound models.
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