{"product_id":"carrier-c50a504021-contactor-1k1tl0","title":"OEM Carrier 2-Pole Contactor 24V Coil 30A for C50A504021 — Ships Today","description":"\u003ch1\u003eOEM Carrier 2-Pole Contactor 24V Coil 30A for Model C50A504021\u003c\/h1\u003e\u003cp\u003eThis OEM contactor is the factory-specified high-voltage relay replacement for the \u003cstrong\u003eCarrier C50A504021\u003c\/strong\u003e packaged unit. The contactor acts as the primary electrical switch that connects line voltage to the compressor and condenser fan motor when the thermostat signals a cooling call. When the contactor fails — due to pitted contacts, coil burnout, or a stuck-open position — the result is an air conditioner that simply won't turn on, hums without starting, or loses cooling capacity intermittently. Replaces OEM part numbers \u003cstrong\u003eHN53CB115\u003c\/strong\u003e, \u003cstrong\u003eHN53CD115\u003c\/strong\u003e, and \u003cstrong\u003eHN53HF122\u003c\/strong\u003e.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-Pole configuration | 24V AC coil voltage | 30A contact rating | Factory-matched coil pull-in voltage for reliable thermostat signaling | NEMA-rated enclosure contacts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM contactors use silver-alloy contacts rated for thousands of switching cycles. Generic aftermarket units often use lower-grade contact materials that pit and weld prematurely, leading to repeat failures and potential compressor damage — not a risk worth taking on a high-load component.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always disconnect power at the disconnect box and confirm zero voltage with a multimeter before touching any terminals. Tools needed: flathead and Phillips screwdrivers, 1\/4\" nut driver, needle-nose pliers, multimeter. Photograph all wiring connections before removing the old contactor. Label each wire. Installation typically takes 20–30 minutes for an experienced DIYer or technician.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before 3 PM EST ship same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct OEM replacement for the Carrier \u003cstrong\u003eC50A504021\u003c\/strong\u003e packaged unit. Cross-references OEM part numbers HN53CB115, HN53CD115, and HN53HF122. Verify coil voltage (24V) and pole configuration on your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before you buy — contact us before placing your order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909670424947,"sku":"CARRIE-C50A504021-CONTACTOR-HN53CB115","price":31.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909670457715,"sku":"CARRIE-C50A504021-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_85f55dc2-2e2d-4d48-a453-2b1dbc30041b.jpg?v=1782897556","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a504021-contactor-1k1tl0","provider":"National HVAC Parts","version":"1.0","type":"link"}