{"product_id":"carrier-cp50p550p503521cp-contactor-1k1s1j","title":"OEM Carrier Contactor 2-Pole 24V Coil for CP50P550P503521CP","description":"\u003ch1\u003eOEM Carrier 2-Pole Contactor 24V Coil for Model CP50P550P503521CP\u003c\/h1\u003e\u003cp\u003eThis OEM replacement contactor is the factory-specified part for the \u003cstrong\u003eCarrier CP50P550P503521CP\u003c\/strong\u003e packaged unit. The contactor is a 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 it fails, the most common symptoms include the AC unit not turning on at all, the compressor failing to engage despite the thermostat calling for cooling, or the contactor staying stuck in the closed position causing the system to run continuously without cycling off.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-pole configuration | 24V AC coil voltage | Factory-rated amperage for Carrier packaged units | OEM part number HN53CD115 | Direct drop-in replacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM contactor is manufactured to Carrier's exact electrical specifications, ensuring proper coil pull-in voltage, contact surface quality, and rated load life. Generic contactors often use lower-grade contact materials that pit and corrode faster, leading to premature failure and potential compressor damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Disconnect all power at the disconnect box and breaker panel before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, voltage tester. Always photograph all wiring before removal. Verify power is off with a non-contact voltage tester before touching any terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the \u003cstrong\u003eCarrier CP50P550P503521CP\u003c\/strong\u003e packaged unit. Cross-reference OEM part number \u003cstrong\u003eHN53CD115\u003c\/strong\u003e against your unit's data plate and existing contactor label to confirm pole count, coil voltage, and amperage rating before ordering. Not sure if this is the right part? Our HVAC parts specialists verify fitment before you buy — contact us and we'll confirm compatibility fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909584507251,"sku":"CARRIE-CP50P550P503521CP-CONTACTOR-HN53CD115","price":31.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909584540019,"sku":"CARRIE-CP50P550P503521CP-CONTACTOR-HN53CD115-GEN","price":23.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-contactor-2pole-HN53CD115_5c7bf5db-00ed-4d24-9510-f54449ac5b7a.jpg?v=1782904613","url":"https:\/\/nationalhvacparts.com\/products\/carrier-cp50p550p503521cp-contactor-1k1s1j","provider":"National HVAC Parts","version":"1.0","type":"link"}