{"product_id":"carrier-ph12na030000abaa-contactor-1iwybu","title":"OEM Carrier Contactor 1-Pole 25A 24V for PH12NA030000ABAA","description":"\u003ch1\u003eOEM Carrier 1-Pole Contactor 25A 24V Coil — HN51KB024 for Model PH12NA030000ABAA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier contactor (part# \u003cstrong\u003eHN51KB024\u003c\/strong\u003e), the factory-specified replacement for the \u003cstrong\u003eCarrier PH12NA030000ABAA\u003c\/strong\u003e heat pump system. The contactor is a high-voltage relay controlled by the 24V thermostat signal — when the thermostat calls for cooling or heating, the contactor closes to allow line-voltage power to flow to the compressor and\/or fan motor. When the contactor fails, the most common symptoms include the outdoor unit not starting at all, a continuous buzzing or chattering sound from the disconnect box, or burned\/welded contacts that keep the unit running non-stop even when the thermostat is off.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 1-Pole | 24V AC 50\/60Hz Coil | 25 FLA (Full Load Amps) | Definite Purpose design | Factory OEM part number HN51KB024\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM contactor with exact-fit terminals and factory-rated contact materials. Aftermarket units often use lower-grade silver alloy contacts that pit and weld faster under repeated switching cycles, shortening overall system life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always disconnect and lock out all power before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring before disconnecting terminals. Verify contact pull-in with a 24V test signal after installation.\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 Carrier model \u003cstrong\u003ePH12NA030000ABAA\u003c\/strong\u003e. Verify your unit's data plate lists a 1-pole, 24V coil contactor before ordering. Our fitment team is available to confirm compatibility before you buy — order with confidence and get it shipped today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641960845683,"sku":"CARRIE-PH12NA030000ABAA-CONTACTOR-HN51KB024","price":80.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641960878451,"sku":"CARRIE-PH12NA030000ABAA-CONTACTOR-HN51KB024-GEN","price":70.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-contactor-HN51KB024_7e2dd023-f934-43fa-9eac-0b0f9a9af817.jpg?v=1775021370","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph12na030000abaa-contactor-1iwybu","provider":"National HVAC Parts","version":"1.0","type":"link"}