{"product_id":"carrier-ph4gnab30000aa-contactor-1iwxlq","title":"OEM Carrier Contactor 1-Pole 30A 24V for PH4GNAB30000AA — HN51KC024","description":"\u003ch1\u003eOEM Carrier Single-Pole Contactor 1-Pole 30A 24V Coil for Model PH4GNAB30000AA (HN51KC024)\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement contactor for the \u003cstrong\u003eCarrier PH4GNAB30000AA\u003c\/strong\u003e packaged heat pump unit. The contactor is a high-voltage relay that opens and closes to send power to the compressor and condenser fan motor every time the thermostat calls for cooling or heating. When the contactor fails — whether from worn contacts, a burned coil, or pitted contact surfaces — the system will either fail to turn on entirely, or run continuously without shutting off. Replacing a failed contactor with this exact OEM part restores factory-matched switching performance and protects the compressor from irregular voltage events.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 1-Pole configuration | 24 VAC coil voltage | 30A full load amps (FLA) | 150A locked rotor amps (LRA) | 50\/60 Hz | Factory part number HN51KC024\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier Factory Authorized Part engineered to meet exact Carrier Corporation specifications for the PH4GNAB30000AA. Generic contactors may use lighter-gauge contacts that pit faster under high-cycle residential loads, reducing service life and risking compressor damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before touching any wiring. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections before disconnecting. Verify 24V coil pull-in after installation with thermostat call.\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 Confirmed fit for Carrier model \u003cstrong\u003ePH4GNAB30000AA\u003c\/strong\u003e. Also used across Carrier, Bryant, and Payne residential and light-commercial AC and heat pump platforms that specify part number HN51KC024. Always verify the part number against your unit's wiring diagram or parts list before ordering. Have a fitment question? Our team verifies compatibility before you buy — reach out before placing your order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641230053747,"sku":"CARRIE-PH4GNAB30000AA-CONTACTOR-HN51KC024","price":67.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641230086515,"sku":"CARRIE-PH4GNAB30000AA-CONTACTOR-HN51KC024-GEN","price":59.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-contactor-HN51KC024_2d7a5770-de7f-46e1-ba1d-cb3cec156406.jpg?v=1775021578","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph4gnab30000aa-contactor-1iwxlq","provider":"National HVAC Parts","version":"1.0","type":"link"}