Heil Quaker ICP 1057251 Sequencer

The Heil Quaker ICP 1057251 Sequencer is a critical multi-circuit timing relay designed for precise electric heat sequencer control in residential and light commercial air handlers. Engineered for 5kW and 7.5kW heating elements, this sequencer manages the staging of resistive loads to prevent electrical demand surges that can trip circuit breakers or damage transformers. This specific model functions without a built-in breaker, making it a direct OEM replacement part for ICP, Heil, Quaker, and Comfortmaker equipment. It utilizes a 24V bimetal heater disc to activate high-voltage contacts, ensuring a steady heat sequence delay that protects the blower motor and improves system efficiency. For contractors, the 1057251 furnace relay provides reliable HVAC contactor performance, maintaining consistent discharge air temperatures by managing delayed on/off cycles for the heating coils.

• Optimized Element Staging: Properly sequences 5kW and 7.5kW kits to stabilize line voltage during startup.
• OEM Compatibility: Exact fit for ICP furnace parts, ensuring terminal alignment and mounting hole synchronization.
• Heavy-Duty Construction: Built to withstand the high-amperage cycles typical of electric furnace sequencers.
• Blower Control Integration: Facilitates the necessary delay for the indoor blower to prevent cold air drafts at the start of a cycle.

Can I use this sequencer for a 10kW heating element?
This 1057251 sequencer is specifically rated for 5kW and 7.5kW loads. Exceeding these specifications can cause premature failure of the bimetal strip or contact welding.

What is the typical 'On' delay for this model?
While specific timings vary based on ambient temperature, this heating element relay typically activates within 1 to 110 seconds to ensure the blower has reached sufficient RPM.

Does this unit include an integrated circuit breaker?
No, this is a sequencer without breaker. If your installation requires overcurrent protection at the sequencer, verify the existing wiring diagram for external breaker requirements.

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.