{"product_id":"carrier-ph10ja03000gadaa-contactor-1iwybu","title":"OEM Carrier Contactor 1-Pole 25A 24V for PH10JA03000GADAA","description":"\u003ch1\u003eOEM Carrier 1-Pole Contactor 25A 24V Coil (HN51KB024) for Model PH10JA03000GADAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement contactor for the \u003cstrong\u003eCarrier PH10JA03000GADAA\u003c\/strong\u003e packaged HVAC unit. The contactor is the high-voltage relay that closes the circuit to power your compressor and\/or condenser fan motor every time the thermostat calls for cooling or heating. When the contactor fails, the most common symptom is a system that simply won't turn on — you may hear the thermostat click and the indoor air handler respond, but the outdoor unit stays silent. In other cases, a worn or pitted contactor causes intermittent operation, chattering, or a system that runs continuously because the contacts have welded shut.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 1-Pole | 25A Full Load Amps (FLA) | 24V AC Coil (50\/60Hz) | Definite Purpose Contactor | Factory OEM part number HN51KB024\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM contactor is manufactured to exact Carrier tolerances for contact gap, coil pull-in voltage, and silver-alloy contact material. Aftermarket contactors often use lower-grade contact alloys that pit and erode faster, especially under repeated daily cycling common in packaged units.\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 beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, and a multimeter. Always photograph existing wiring before disconnecting any terminals to ensure correct reinstallation.\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 Direct OEM replacement for \u003cstrong\u003eCarrier model PH10JA03000GADAA\u003c\/strong\u003e packaged HVAC units. Verify your unit's data plate shows the HN51KB024 part number or a 1-Pole 25A 24V coil contactor specification before ordering. Our fitment team is available to confirm compatibility before you buy — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62642008457587,"sku":"CARRIE-PH10JA03000GADAA-CONTACTOR-HN51KB024","price":77.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62642008490355,"sku":"CARRIE-PH10JA03000GADAA-CONTACTOR-HN51KB024-GEN","price":68.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-contactor-HN51KB024_6135efc8-fa7c-47d0-ad26-d0e9b1219ace.jpg?v=1775021365","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph10ja03000gadaa-contactor-1iwybu","provider":"National HVAC Parts","version":"1.0","type":"link"}