Carrier HN52KC053 Contactor

This Carrier HN52KC053 Contactor is a heavy-duty 2-pole definite purpose contactor designed for reliable switching in high-demand HVAC and motor control applications. Engineered for 208/240V coil systems, it provides a 35A full load amperage (FLA) rating, ensuring it handles the start-up inrush and continuous operation of residential and light commercial compressors. The double-pole single-throw (DPST) configuration features normally open (NO) contacts, essential for completely disconnecting both hot legs in 240V circuits to maintain safe servicing conditions. With standard 1/4 inch quick connect terminals and a high locked rotor amperage (LRA) capacity, this genuine OEM Carrier part is a direct replacement for multiple older part numbers including HN51CB230, HN52KC040, and P282-5302. Built by Hartland Controls (HCC series), the robust frame and high-grade alloy contacts are designed to minimize arcing and provide long-term durability in condenser fan and AC outdoor units.

• Universal Compatibility: Replaces a wide range of legacy Carrier, Bryant, and Payne contactor models with identical footprints.
• Superior Current Handling: Rated for 35A FLA and up to 150A LRA at 240V, making it ideal for high-tonnage AC systems.
• Enhanced Safety: The 2-pole design ensures both legs of power are broken, eliminating the risk of a "live" wire during system shutdown.
• Industrial Build Quality: Features a shunt and heavy-duty magnetic coil for consistent actuation under variable load conditions.

Common Questions

Can I use this 2-pole contactor to replace a single-pole model?
Yes, technicians often use a 2-pole contactor as an upgrade for a 1-pole unit. To maintain power to components like crankcase heaters that require a continuous leg of power, you can install a jumper wire across one pole to mimic the "constant hot" behavior of a single-pole shunt.

What is the difference between FLA and LRA on this part?
The 35A FLA (Full Load Amps) is the maximum current the contacts can handle continuously. The 150A LRA (Locked Rotor Amps) is the momentary surge the contactor can withstand when the compressor motor is starting from a dead stop.

Will this work with a 24V control circuit?
No, this specific model (HN52KC053) requires a 208/240V signal to the coil. Always verify your transformer output before installation; using a 24V signal will not provide enough magnetic force to pull in the 240V coil contacts.

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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.