OEM Carrier 2-Pole Contactor 24V Coil for Model C48A504011

This is the factory-specified OEM replacement contactor for the Carrier C48A504011 packaged unit. The contactor is a high-voltage relay that receives a 24V signal from the thermostat and closes the circuit to deliver line voltage to the compressor and condenser fan motor. When the contactor fails — due to pitted contacts, a burned coil, or stuck contacts — the system will either refuse to start entirely, fail to shut off, or trip the breaker repeatedly. OEM part numbers HN53CB115 and HN53CD115 are the direct factory replacements for this application.

• Specs: 2-pole configuration | 24V coil voltage | Rated for high-amperage compressor loads | Factory-matched contact material and coil resistance for reliable switching
• OEM vs Generic: OEM contactors from Carrier use precision-milled silver-alloy contacts that resist pitting and arcing. Generic contactors often use lower-grade contact materials that degrade faster under the repetitive load cycling typical of packaged HVAC units, leading to premature failure and potential compressor damage.
• Install difficulty: 3/5 — Requires disconnecting line voltage at the unit disconnect before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, and a phone or camera to photograph existing wiring before removal. Transfer wires one at a time to avoid miswiring. Verify coil voltage with a multimeter before energizing.
• Warranty: 1-year OEM factory warranty. Orders placed by 3PM EST ship same business day from our stocked warehouse.

Compatibility: Designed for the Carrier C48A504011 packaged gas/electric unit. Cross-references OEM part numbers HN53CB115 and HN53CD115. Always verify pole count, coil voltage, and amperage rating against your unit's data plate or wiring diagram before ordering. Our fitment specialists are available to confirm compatibility before you buy — no guesswork required.