{"product_id":"carrier-c50a505021-contactor-1k1s1j","title":"OEM Carrier Contactor 2-Pole 24V Coil for C50A505021","description":"\u003ch1\u003eOEM Carrier 2-Pole Contactor 24V Coil for Model C50A505021\u003c\/h1\u003e\u003cp\u003eThis OEM contactor is the factory-specified high-voltage relay for the \u003cstrong\u003eCarrier C50A505021\u003c\/strong\u003e packaged unit. The contactor acts as the primary switching device between your 24V control circuit and the high-voltage compressor and condenser fan circuits. When the thermostat calls for cooling, the 24V coil energizes and closes the contacts, allowing line voltage to power the compressor. A failed contactor is one of the most common causes of an air conditioning system that simply won't turn on — or one that hums loudly but never starts. Pitted, burned, or stuck contacts are telltale signs it's time to replace. OEM part numbers \u003cstrong\u003eHN53CD115\u003c\/strong\u003e and \u003cstrong\u003eHN53HF122\u003c\/strong\u003e are both factory-authorized replacements for this application.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-pole configuration | 24V coil voltage | Factory-rated amperage for C50A505021 | Heavy-duty silver-alloy contact tips for long service life\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM contactors use factory-spec contact materials and coil windings, ensuring proper pull-in voltage and contact life. Generic alternatives often use lower-grade contact alloys that pit and weld prematurely, leading to repeat failures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Always shut off power at the disconnect and verify voltage is zero with a multimeter before touching any terminals. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring before disconnecting. Swap wire-for-wire to avoid miswiring.\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 Designed for the Carrier \u003cstrong\u003eC50A505021\u003c\/strong\u003e commercial packaged unit. Cross-references OEM part numbers HN53CD115 and HN53HF122. Always verify pole count, amperage rating, and coil voltage against your unit's data plate and wiring diagram before ordering. Our fitment team is available to confirm compatibility before you buy — same-day shipping means you're back up and running fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909669081459,"sku":"CARRIE-C50A505021-CONTACTOR-HN53CD115","price":31.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909669114227,"sku":"CARRIE-C50A505021-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_f9aa1f3d-5eac-4303-a0fc-fb9e17cf215f.jpg?v=1782904490","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a505021-contactor-1k1s1j","provider":"National HVAC Parts","version":"1.0","type":"link"}