{"product_id":"carrier-c4850c50aj03021-contactor-1k1tl0","title":"OEM Carrier 40A Contactor 2-Pole 24V Coil for C4850C50AJ03021 | National HVAC Parts","description":"\u003ch1\u003eOEM Carrier 2-Pole Contactor 24V Coil for Model C4850C50AJ03021\u003c\/h1\u003e\u003cp\u003eThis is the factory-specified OEM replacement contactor (part number \u003cstrong\u003eHN53CB115\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier C4850C50AJ03021\u003c\/strong\u003e packaged unit. The contactor is a high-voltage relay controlled by your thermostat's 24V signal — when the thermostat calls for cooling, the contactor closes its poles to send 240V power to the compressor and condenser fan motor. A failed contactor is one of the most common causes of an air conditioning system that won't respond to a cooling call, produces a loud buzzing or chattering noise, or shows a compressor that runs continuously even when the thermostat is satisfied.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-pole configuration | 24V AC coil voltage | 30–40 amp rated | 240V power circuit | Direct OEM replacement for part number HN53CB115\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM contactors use factory-matched coil windings and silver-alloy contact tips rated for the exact current load of your Carrier unit. Generic contactors often use lower-grade contact materials that arc and pit faster, leading to premature failure and potential compressor damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always disconnect power at the disconnect box and verify zero voltage with a multimeter before beginning. Tools needed: flathead and Phillips screwdrivers, 1\/4\" nut driver, needle-nose pliers, multimeter. Photograph all wire connections before removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as a direct OEM replacement for the Carrier \u003cstrong\u003eC4850C50AJ03021\u003c\/strong\u003e packaged unit. Always confirm your existing contactor's pole count, coil voltage, and amperage rating against your unit's data plate before ordering. Our parts specialists are available to verify fitment — reach out before you order if you have any questions. Order today and receive same-day shipping on all in-stock parts.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909843374451,"sku":"CARRIE-C4850C50AJ03021-CONTACTOR-HN53CB115","price":31.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909843407219,"sku":"CARRIE-C4850C50AJ03021-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_02715222-bea1-4ce3-8772-39f13a41fa12.jpg?v=1782898790","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50aj03021-contactor-1k1tl0","provider":"National HVAC Parts","version":"1.0","type":"link"}