{"product_id":"carrier-ph10ja030000agaa-contactor-1iwybu","title":"OEM Carrier Contactor 24V Coil 2-Pole for PH10JA030000AGAA","description":"\u003ch1\u003eOEM Carrier Contactor 24V Coil 2-Pole for Model PH10JA030000AGAA\u003c\/h1\u003e\u003cp\u003eThis OEM contactor (part number \u003cstrong\u003eHN51KB024\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier PH10JA030000AGAA\u003c\/strong\u003e packaged heat pump unit. The contactor is a high-voltage relay controlled by the 24V thermostat signal — when your thermostat calls for cooling or heating, the contactor closes to send line voltage to the compressor and condenser fan motor. When a contactor fails, symptoms include an AC or heat pump that simply won't energize, a system that runs continuously without shutting off, or visible pitting and burning on the contact surfaces causing intermittent operation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e OEM Part No. HN51KB024 | 2-Pole design | 24V coil voltage | Factory-matched contact rating for Carrier PH10JA030000AGAA — verify amperage on your unit's data plate before ordering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM contactors use silver-alloy contact tips rated for thousands of switching cycles. Generic alternatives often use lower-grade contacts that pit and arc faster, leading to premature failure and potential compressor damage from voltage drop.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Always shut off power at both the disconnect box and breaker panel before servicing. Tools needed: flathead and Phillips screwdrivers, 1\/4\" nut driver, needle-nose pliers, multimeter. Photograph all wiring connections before removing the old contactor. Line-voltage terminals remain energized at the line side even when the unit is off — confirm power is fully disconnected.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. Orders ship same business day from our warehouse when placed before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as a direct OEM replacement for \u003cstrong\u003eCarrier model PH10JA030000AGAA\u003c\/strong\u003e packaged heat pump systems. Always cross-reference the part number on the existing contactor label and verify coil voltage and pole configuration match before installation. Our fitment specialists are available to confirm compatibility before you order — reach out via chat or phone.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62642009637235,"sku":"CARRIE-PH10JA030000AGAA-CONTACTOR-HN51KB024","price":68.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62642009670003,"sku":"CARRIE-PH10JA030000AGAA-CONTACTOR-HN51KB024-GEN","price":60.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-contactor-HN51KB024_5939eb81-f35a-470b-993d-a10e195f24ec.jpg?v=1775022075","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph10ja030000agaa-contactor-1iwybu","provider":"National HVAC Parts","version":"1.0","type":"link"}