{"product_id":"carrier-ph1zna024000aaaa-contactor-1iwybu","title":"OEM Carrier Contactor 1-Pole 25A 24V for PH1ZNA024000AAAA","description":"\u003ch1\u003eOEM Carrier Single-Pole Contactor 25A 24V Coil — HN51KB024 for Model PH1ZNA024000AAAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement contactor for the \u003cstrong\u003eCarrier PH1ZNA024000AAAA\u003c\/strong\u003e heat pump\/condenser unit. The contactor is a high-voltage relay controlled by the 24V thermostat signal — when your thermostat calls for cooling or heating, the 24V coil energizes, closing the contacts and sending line voltage to the compressor and\/or condenser fan motor. A failed contactor is one of the most common reasons a Carrier unit hums but won't start, trips the breaker, or simply doesn't respond to thermostat calls at all. Burned or pitted contacts prevent current flow, while a welded contactor causes the unit to run continuously even when the thermostat is satisfied.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 1-Pole (single-pole) | 25A Full Load Amps (FLA) | 24V AC 50\/60Hz coil voltage | Direct OEM replacement for part number HN51KB024\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM contactors use factory-spec silver-alloy contact tips rated for the exact load profile of your Carrier unit. Generic aftermarket contactors often use lower-grade contacts that pit and fail faster — especially in high-cycle climates. OEM is the right call for long-term reliability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Always disconnect power at the breaker and wait for capacitors to discharge before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wire connections before removal. Label wires L1, L2, T1, T2 to ensure correct reinstallation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse — order by 3PM local time for same-day dispatch.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Confirmed fit for Carrier model \u003cstrong\u003ePH1ZNA024000AAAA\u003c\/strong\u003e. Always verify your unit's data plate matches the 1-pole, 25A, 24V coil specification before ordering. Not sure? Our HVAC parts specialists verify fitment before you buy — contact us with your model and serial number.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641535287667,"sku":"CARRIE-PH1ZNA024000AAAA-CONTACTOR-HN51KB024","price":68.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641535320435,"sku":"CARRIE-PH1ZNA024000AAAA-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_721c7c24-42da-44d5-ad9a-bfc4c1277010.jpg?v=1775021375","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph1zna024000aaaa-contactor-1iwybu","provider":"National HVAC Parts","version":"1.0","type":"link"}