{"product_id":"carrier-c50a503021-contactor-1k1tl0","title":"OEM Carrier Contactor 2-Pole 24V Coil for C50A503021","description":"\u003ch1\u003eOEM Carrier 2-Pole Contactor for Model C50A503021 — HN53CB115 \/ HN53CD115\u003c\/h1\u003e\u003cp\u003eThis OEM replacement contactor is the factory-specified part for the \u003cstrong\u003eCarrier C50A503021\u003c\/strong\u003e packaged unit. The contactor acts as the primary high-voltage relay in your system — when the thermostat calls for cooling, the 24V control circuit energizes the contactor coil, closing the high-voltage contacts that supply power to the compressor and condenser fan motor. A failed contactor is one of the most common causes of an air conditioning system that simply won't turn on, hums without starting, or suffers from burned or pitted contact points that cause intermittent operation or complete shutdown.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-pole configuration | 24V coil voltage | Rated for high-amperage compressor load | Direct factory replacement for OEM part numbers \u003cstrong\u003eHN53CB115\u003c\/strong\u003e and \u003cstrong\u003eHN53CD115\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM contactor uses factory-matched contact materials and coil windings, ensuring proper pull-in voltage and long contact life. Generic contactors frequently use lower-grade contact alloys that pit and burn faster, leading to repeat failures within a single cooling season.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the disconnect box and confirm voltage is absent with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections before removal. Wire-for-wire replacement; typical job takes 15–30 minutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock units ship same business day from our warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eC50A503021\u003c\/strong\u003e commercial packaged unit. Cross-references OEM part numbers HN53CB115 and HN53CD115. Always verify coil voltage and pole configuration on your unit's data plate before ordering. Our parts specialists are available to confirm fitment — reach out before you buy for total peace of mind. \u003cstrong\u003eOrder today and your part ships today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909673406835,"sku":"CARRIE-C50A503021-CONTACTOR-HN53CB115","price":31.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909673439603,"sku":"CARRIE-C50A503021-CONTACTOR-HN53CB115-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-HN53CB115_ebb58c35-cefa-4746-b43f-d377eddbd8e5.jpg?v=1782904481","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a503021-contactor-1k1tl0","provider":"National HVAC Parts","version":"1.0","type":"link"}