{"product_id":"carrier-c50a503012-contactor-1k1tl0","title":"OEM Carrier 40A Contactor 2-Pole 24V Coil for C50A503012","description":"\u003ch1\u003eOEM Carrier 2-Pole Contactor 24V Coil for Model C50A503012\u003c\/h1\u003e\u003cp\u003eThis OEM replacement contactor is the factory-specified switching relay for the \u003cstrong\u003eCarrier C50A503012\u003c\/strong\u003e commercial packaged rooftop unit. The contactor acts as a high-voltage relay controlled by the 24V thermostat circuit — when the thermostat calls for cooling, the contactor closes and delivers line voltage to the compressor and condenser fan motor. A failed contactor is one of the most common causes of an air conditioning system that runs the indoor blower but produces no cooling. Symptoms include a buzzing or chattering contactor, a system that won't energize at all, or a compressor that drops out intermittently under load.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-pole configuration | 24V AC coil voltage | 40A contact rating | Compatible with OEM part numbers \u003cstrong\u003eHN53CB115\u003c\/strong\u003e and \u003cstrong\u003eHN53CD115\u003c\/strong\u003e | Factory-matched silver alloy contacts for long service life\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM contactors use factory-spec contact alloys and coil windings calibrated to pull in cleanly at low-voltage conditions. Generic contactors often exhibit contact pitting, coil chatter, and premature failure — especially in high-cycle commercial applications like the C50A503012.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always shut off power at the disconnect before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, and a voltage tester. Photograph all wiring connections before removal. Line voltage terminals must be torqued to spec to prevent arcing.\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 stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered for the Carrier \u003cstrong\u003eC50A503012\u003c\/strong\u003e commercial packaged rooftop unit. Cross-references OEM part numbers HN53CB115 and HN53CD115. Verify coil voltage and pole configuration on your unit's wiring diagram or data plate before ordering. Our fitment team is available to confirm compatibility prior to purchase — same-day shipping on all in-stock orders.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909673603443,"sku":"CARRIE-C50A503012-CONTACTOR-HN53CB115","price":40.8,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909673636211,"sku":"CARRIE-C50A503012-CONTACTOR-HN53CB115-GEN","price":30.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-contactor-2pole-HN53CB115_9905cb26-fa22-4a77-8cf5-22aba6c07daa.jpg?v=1782898861","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a503012-contactor-1k1tl0","provider":"National HVAC Parts","version":"1.0","type":"link"}