OEM Carrier 2-Pole Contactor for Model C50A502561 — HN53CB115 / HN53CD115

This is the factory-specified OEM contactor for the Carrier C50A502561 packaged unit. The contactor is the high-voltage relay that receives a 24V signal from the thermostat and closes the circuit to send line voltage to the compressor and condenser fan motor. When the contactor fails — due to pitted or burned contacts, a stuck plunger, or a failed coil — the system will fail to energize at all, or may run continuously without responding to thermostat commands. OEM part numbers HN53CB115 and HN53CD115 are the factory-authorized replacements for this unit.

• Specs: 2-pole configuration | 24V control coil | High-amperage contacts rated for compressor load | Direct OEM factory replacement matching original form, fit, and function
• OEM vs Generic: OEM contactors use silver-alloy contact tips and precisely wound coils calibrated to pull in reliably at low-voltage conditions. Generic substitutes often use inferior contact materials that pit faster under load, leading to premature failure and potential compressor damage.
• Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring connections before removing the old contactor. Transfer one wire at a time to avoid miswiring.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before cutoff ship same business day from our warehouse.

Compatibility: Designed for the Carrier C50A502561 packaged unit. Compatible OEM part numbers are HN53CB115 and HN53CD115 — both are accepted factory replacements for this application. Always verify your unit's data plate voltage and amperage ratings before ordering. Our parts specialists are available to confirm fitment before you buy.