{"product_id":"carrier-c4850c48ay03511-contactor-1k1tl0","title":"OEM Carrier 50A Contactor 2-Pole 24V Coil for C4850C48AY03511","description":"\u003ch1\u003eOEM Carrier 2-Pole Contactor HN53CB115 for Model C4850C48AY03511\u003c\/h1\u003e\u003cp\u003eThis is the factory-specified OEM replacement contactor (part number \u003cstrong\u003eHN53CB115\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier C4850C48AY03511\u003c\/strong\u003e packaged unit. The contactor is a high-voltage relay that receives a 24V signal from the thermostat or control board to close its contacts and supply line voltage to the compressor and condenser fan motor. When the contactor fails — due to pitted or burned contacts, a stuck plunger, or a failed coil — the system will fail to energize, run intermittently, or remain stuck in the ON position even after the thermostat calls end.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-pole configuration | 24V AC coil voltage | 40–50A contact rating | Factory-matched OEM dimensions and terminal layout for direct swap-in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM contactors like this HN53CB115 are manufactured to exact Carrier specifications, ensuring proper coil pull-in voltage, contact gap, and silver-alloy contact material. Generic substitutes often use lower-grade contacts that pit and weld faster under load, leading to repeat failures and potential compressor damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power at the breaker and verify zero voltage with a multimeter before proceeding. Tools needed: flathead and Phillips screwdrivers, 1\/4\" nut driver, needle-nose pliers, non-contact voltage tester. Photograph all wire connections before removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. 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 for the Carrier \u003cstrong\u003eC4850C48AY03511\u003c\/strong\u003e packaged unit. Always confirm OEM part number HN53CB115 against your unit's wiring diagram or data plate before ordering. Not sure about fitment? Our HVAC parts specialists verify compatibility before every order — contact us and we'll confirm your part.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909882958195,"sku":"CARRIE-C4850C48AY03511-CONTACTOR-HN53CB115","price":31.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909882990963,"sku":"CARRIE-C4850C48AY03511-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_ae829e1c-3ee6-4d5b-9ea6-997e3c957024.jpg?v=1782900286","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c48ay03511-contactor-1k1tl0","provider":"National HVAC Parts","version":"1.0","type":"link"}