Intermatic FF312H Timer

The Intermatic FF312H Timer is a core component for contractors requiring a reliable, electricity-free countdown solution for high-load HVACR and lighting energy management. Built with a robust spring wound mechanism, this SPDT 12-hour timer operates without batteries or external power, eliminating common points of failure in the field. Designed to replace a standard single-gang wall switch, it features a brushed metal finish that meets NEC requirements for commercial durability. With its Single-Pole Double-Throw contact configuration, you can utilize the normally open (NO) or normally closed (NC) contacts to control circuits up to 20 Amps at 125 VAC or 10 Amps at 277 VAC. This model is explicitly designed without hold, ensuring the load is always interrupted once the dial reaches zero. The teeter-type terminals and a convenient press-on knob facilitate rapid installation in 2-1/2 inch deep junction boxes, allowing for efficient load management of whole-house fans, industrial ventilation, and resistive heaters.

Key Benefits

• Universal Voltage Compatibility: Supports 125 VAC, 240 VAC, and 277 VAC applications, making it a versatile stock item for various job sites.
• Mechanical Reliability: No electronic components to fail; the spring wound timer functions independently of the building's electrical supply.
• Multi-Load Management: Rated for up to 1 HP at 120 VAC and 2 HP at 240 VAC, suitable for heavy-duty motors and HVACR equipment.
• NEC Compliant Design: Includes a commercial-grade faceplate that satisfies code requirements for installations in high-traffic environments.
• Broad Lamp Compatibility: Engineered to handle CFL, LED, and incandescent lighting loads without flickering or interference.

Common Questions

Can the Intermatic FF312H be used for both lighting and fans?
Yes, it is specifically rated for both inductive and resistive loads. It is commonly used for commercial ventilation, heat lamps, and lighting where an auto-off timer is required to prevent energy waste.

Does this model allow the circuit to remain on indefinitely?
No. The FF312H is a "without hold" model. The dial must be manually turned to a specific time interval, and the circuit will always break once that time expires.

Is a neutral wire required for installation?
Because this is a fully mechanical spring-wound countdown timer, it does not require a neutral connection to operate, allowing for easier retrofitting in older electrical boxes.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.