{"product_id":"carrier-c50a503022-contactor-1k1tl0","title":"OEM Carrier Contactor 2-Pole 24V Coil for C50A503022","description":"\u003ch1\u003eOEM Carrier 2-Pole Contactor for Model C50A503022 Packaged Unit\u003c\/h1\u003e\u003cp\u003eThis is the factory-specified OEM replacement contactor for the \u003cstrong\u003eCarrier C50A503022\u003c\/strong\u003e packaged rooftop unit. The contactor is a high-voltage relay that closes the circuit between your 24V control board signal and the high-voltage power supply to the compressor and condenser fan motor. When the contactor fails — due to pitted contacts, a stuck or burned coil, or a welded plunger — the most common symptoms are an AC system that won't turn on at all, a compressor that hums but never starts, or a unit that runs continuously even after the thermostat is satisfied. Replaces OEM part numbers \u003cstrong\u003eHN53CB115\u003c\/strong\u003e and \u003cstrong\u003eHN53CD115\u003c\/strong\u003e.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-pole configuration | 24V coil voltage | Factory-rated amperage for Carrier C50A503022 | Silver alloy contact tips for extended service life and reduced arcing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM contactors are manufactured to exact Carrier electrical and mechanical tolerances. Generic contactors may carry higher contact resistance and looser coil pull-in voltage specs, leading to premature failure and potential compressor damage — especially in high-cycle commercial applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Always disconnect and lock out power at the disconnect box before beginning work. Tools needed: flathead and Phillips screwdrivers, 1\/4\" and 5\/16\" nut drivers, needle-nose pliers, multimeter. Photograph all wire connections before removal. Verify coil voltage with your multimeter during commissioning.\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 3PM EST ship same business day from our climate-controlled parts warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the \u003cstrong\u003eCarrier C50A503022\u003c\/strong\u003e commercial packaged unit. This part directly replaces OEM part numbers HN53CB115 and HN53CD115. Always verify pole count, coil voltage, and amperage rating against your unit's wiring diagram and data plate before ordering. Not sure if this is the right part? Our HVAC-certified parts team will verify fitment before you buy — contact us before placing your order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909673341299,"sku":"CARRIE-C50A503022-CONTACTOR-HN53CB115","price":31.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909673374067,"sku":"CARRIE-C50A503022-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_928ba9e3-267c-4130-a102-c9509e28abb0.jpg?v=1782904483","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a503022-contactor-1k1tl0","provider":"National HVAC Parts","version":"1.0","type":"link"}