{"product_id":"carrier-roa0750m5h-contactor-1k1rxh","title":"OEM Carrier 3-Pole Contactor 208-240V 40A for ROA0750M5H","description":"\u003ch1\u003eOEM Carrier 3-Pole Contactor HN53CD209 for Model ROA0750M5H\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement contactor for the \u003cstrong\u003eCarrier ROA0750M5H\u003c\/strong\u003e commercial rooftop or packaged unit. The contactor is the high-voltage switching relay that receives a low-voltage signal from the control board and closes the circuit to send line voltage to the compressor and condenser fan motor. When the contactor fails — due to pitted contacts, a welded coil, or coil burnout — the system will either fail to start entirely, run continuously without shutting off, or trip on a fault code. Replacing it with the correct OEM part ensures full electrical compatibility and reliable operation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 3-pole configuration | 208-240V coil | 40A Full Load Amps (FLA) | 50A Resistive rating | Factory-specified for Carrier ROA0750M5H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM contactors are manufactured to exact Carrier coil pull-in voltage tolerances and contact gap specifications. Aftermarket contactors often use lighter contact materials, leading to premature pitting and arcing under high-amperage load cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Requires complete power lockout\/tagout before servicing. Tools needed: flathead and Phillips screwdrivers, 1\/4\" nut driver, needle-nose pliers, multimeter (to verify coil resistance and confirm dead contacts). Photograph all wiring connections before removal. Professional installation is strongly recommended for commercial equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships 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\u003eROA0750M5H\u003c\/strong\u003e. Verify your unit's data plate coil voltage and pole count before ordering. Not sure? Contact our fitment team — we confirm compatibility before you buy. In stock and ready to ship today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640300097907,"sku":"CARRIE-ROA0750M5H-CONTACTOR-HN53CD209","price":77.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640300130675,"sku":"CARRIE-ROA0750M5H-CONTACTOR-HN53CD209-GEN","price":68.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-contactor-HN53CD209_7669d513-88a8-4df5-ac8d-e37529e8a10f.jpg?v=1775015841","url":"https:\/\/nationalhvacparts.com\/products\/carrier-roa0750m5h-contactor-1k1rxh","provider":"National HVAC Parts","version":"1.0","type":"link"}