OEM Carrier 3-Pole Contactor 208/240V 40A — HN53CD209 for Model RSA1000H2J

This is the factory-specified OEM replacement contactor for the Carrier RSA1000H2J commercial packaged unit. The contactor is the primary high-voltage switching relay in the condensing section — it receives a low-voltage signal from the control board and closes the circuit to deliver line voltage to the compressor and condenser fan motor. When a contactor fails, you may experience the system not responding to a thermostat call, audible chattering or humming at the unit, or the compressor running continuously even when cooling is not demanded. Pitted or welded contacts are common failure modes on units with heavy run-time accumulation.

• Specs: 3-Pole | 40A FLA / 50A RES | 208/240V coil | 50/60 Hz | OEM Part # HN53CD209 | Factory-matched contact materials and coil pull-in voltage
• OEM vs Generic: This is a genuine Carrier OEM contactor, not an aftermarket substitute. Generic contactors often use lighter-gauge contact materials with looser coil voltage tolerances, leading to premature welding under high-cycle commercial loads.
• Install difficulty: 3/5 — This part carries 208/240V line voltage. Always disconnect and lock out/tag out all power before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wire connections before removal. Recommended for qualified HVAC technicians.
• Warranty: 1-year OEM factory warranty. Ships same business day from our stocked warehouse.

Compatibility: Engineered as the direct OEM replacement for Carrier RSA1000H2J packaged units specifying part number HN53CD209. Confirm coil voltage and pole count on your unit's wiring diagram before ordering. Need fitment help? Our HVAC parts specialists verify compatibility before you buy — reach out today and ship tonight.