Heil Quaker ICP 1172472 Contactor

The Heil Quaker ICP 1172472 Contactor is a heavy-duty, 1-pole 30A 24V contactor designed for high-cycle reliability in residential and light commercial condensing units. Engineered as a definite purpose contactor, this OEM component features a built-in shunt to maintain continuous power to the heater circuit while switching the compressor and condenser fan motor. With a 30 Amp Full Load Amperage (FLA) rating and compatibility across 240V/277V line voltage applications, it serves as a critical replacement for Heil, Tempstar, and Comfortmaker systems. The 24V AC induction coil is precision-wound to resist coil burnout and insulation breakdown caused by voltage fluctuations. This single-pole single-throw (SPST) switch utilizes 1/4 inch quick-connect terminals for efficient field wiring. Whether you are addressing pitted contacts or a shorted contactor coil, this ICP 1172472 replacement provides the high Locked Rotor Amperage (LRA) capacity needed to handle the inductive inrush of modern high-efficiency compressors without premature welding or failure.

• Mechanical Endurance: Rated for high-amperage inductive loads, ensuring the silver cadmium oxide contacts resist pitting and welding under extreme heat.
• Integrated Shunt: The 1-pole with shunt configuration allows for constant power to crankcase heaters, protecting the compressor during cold starts.
• Universal ICP Compatibility: Direct fit for numerous International Comfort Products models including HSA5, HSA6, and HCA7 series.
• Dust-Resistant Design: The enclosed housing helps prevent debris and insects from obstructing contactor movement and causing high resistance at the connection points.

Can I use a 2-pole contactor to replace this 1-pole model?
While a 2-pole contactor technically breaks both legs of power, the ICP 1172472 is specifically chosen for its shunt. Replacing it with a standard 2-pole may require re-wiring the crankcase heater circuit. Stick with the OEM 1-pole design to maintain intended system protection.

What causes the "chattering" sound in this contactor?
Chattering is typically caused by low voltage at the 24V coil terminals (often below 18V) or a failing 24V transformer. Check for corroded electrical connections or loose spade terminals before assuming the contactor itself has failed.

How do I verify if the coil is burnt out?
Use a multimeter to check the coil resistance. A healthy 24V coil for this model typically reads around 40 Ohms. An "OL" reading indicates an open winding, requiring immediate replacement.

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.