Intermatic
Intermatic FD15MC spring-wound timer 1 hp 120V 2 hp 240V 277V ivory
Spring-wound timer rated 1 hp at 120V and 2 hp at 240V, single-gang ivory housing
- Spring-wound operation needs no external power supply
- 1 hp at 120 V AC handles typical lighting loads
- 2 hp at 240 V AC supports heavier motor circuits
- 277 V AC rating suits commercial fluorescent systems
- Single-gang ivory housing fits standard wall boxes
Spring-Wound Timer for Motor Control
The Intermatic FD15MC is a spring-wound mechanical timer designed to switch single-phase motor loads. It provides reliable on-off timing without external power, making it suitable for irrigation pumps, ventilation fans or lighting circuits in commercial and agricultural settings.
Single-Gang 120/240/277 V AC Wiring
The unit fits a standard single-gang enclosure and accepts 120 V, 240 V or 277 V AC supply. It frees the installer from running a separate control transformer or low-voltage wiring because the mechanism operates directly from line voltage.
Mechanical Operation Under Continuous Cycling
The spring-driven mechanism delivers consistent timing intervals during repeated daily cycles. Because it contains no electronic components, performance does not drift with temperature swings or voltage variation, and the timer withstands sustained motor inrush currents at the rated horsepower.
Highlights
- Spring-wound operation needs no external power supply
- 1 hp at 120 V AC handles typical lighting loads
- 2 hp at 240 V AC supports heavier motor circuits
- 277 V AC rating suits commercial fluorescent systems
- Single-gang ivory housing fits standard wall boxes
Specifications
| Brand | INTERMATIC |
|---|
Questions about this item
How long can the spring-wound mechanism run the timer before it needs rewinding?
The spring-wound design operates mechanically without electrical power to the timing mechanism itself, so it runs until the stored spring energy is depleted, then requires manual rewinding to continue timing.
Does the timer generate noticeable heat or noise when controlling a 1 hp motor at 120 V continuously?
As a purely mechanical spring-wound device, it produces minimal audible ticking and negligible heat during operation, since no motor or electronic circuitry runs continuously inside the timer.
What voltage supply must already be present at the installation site for this timer to control the load?
The timer is rated for 120 V AC, 240 V AC, or 277 V AC circuits, so the site must provide one of those voltages matching the load requirements.
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