Intermatic
Intermatic FF412H Spring Wound Timer 12 Hr DPST Silver
Spring-wound timer automatically limits energy-consuming loads for up to 12 hours with DPST switching rated at 1 hp at 120V and 2 hp at 240V
- Automatically limits run time to save energy
- Spring-wound mechanism operates without external power
- DPST switching controls two circuits simultaneously
- Rated for 1 hp at 120 V and 2 hp at 240 V
- cCSAus and RU certified for safety compliance
Spring-Wound 12-Hour Timer
The Intermatic FF412H is a spring-wound mechanical timer rated for 12 hours of operation. It uses a DPST contact arrangement to switch loads automatically, helping to limit energy consumption by cutting power after the set interval. The unit carries cCSAus and RU safety certifications.
1 hp at 120 V and 2 hp at 240 V
At 120 V the timer controls motor loads up to 1 hp, while at 240 V it handles up to 2 hp. The single-gang enclosure fits standard electrical boxes and operates without an external power source. No fan or active cooling is required, so the device runs silently during normal use.
Sustained Load Behaviour
The mechanical spring mechanism maintains consistent timing across the full 12-hour range without electronic drift. Contacts remain closed for the entire wound period and open cleanly at the end of the cycle, even under continuous motor load at the rated horsepower.
Highlights
- Automatically limits run time to save energy
- Spring-wound mechanism operates without external power
- DPST switching controls two circuits simultaneously
- Rated for 1 hp at 120 V and 2 hp at 240 V
- cCSAus and RU certified for safety compliance
Specifications
| Brand | INTERMATIC |
|---|
Questions about this item
How is the spring-wound timer mounted and wired, and what step is often missed?
Mount the single-gang unit in a standard electrical box and connect the DPST contacts to the load; the step often missed is verifying the circuit voltage matches the 1 hp at 120 V or 2 hp at 240 V ratings before energising.
What maintenance or replacement will the timer need over time?
The mechanical spring-wound mechanism may eventually lose tension or wear, requiring full timer replacement; no user-serviceable parts or lubrication points are specified.
What limit appears first during continuous operation?
The 12-hour maximum winding period is the first limit reached under sustained use, after which the timer must be rewound to continue timing.
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