{"product_id":"carrier-py3gna024040ab-contactor-1iwybu","title":"OEM Carrier Contactor 1-Pole 25A 24V for PY3GNA024040AB","description":"\u003ch1\u003eOEM Carrier Single-Pole Contactor 25A 24V Coil (HN51KB024) for Model PY3GNA024040AB\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier contactor (part number \u003cstrong\u003eHN51KB024\u003c\/strong\u003e), factory-specified for the \u003cstrong\u003eCarrier PY3GNA024040AB\u003c\/strong\u003e packaged unit. The contactor is a high-voltage relay that closes the circuit to the compressor and\/or condenser fan motor when the thermostat calls for cooling. When the contactor fails — due to burnt or pitted contacts, a failed coil, or a mechanically stuck plunger — the most common symptom is the outdoor unit not energizing at all, even when the thermostat is set correctly and the indoor air handler is running. A failed contactor can also cause the compressor to run continuously (welded contacts) or to short-cycle, both of which accelerate system wear.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 1 Pole (Single Pole) | 25A Full Load Amps (FLA) | 150A Locked Rotor Amps (LRA) | 24V AC 50\/60 Hz coil | OEM-matched contact geometry and coil resistance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM contactors use factory-spec silver-alloy contacts rated for tens of thousands of switching cycles. Generic aftermarket contactors often use lower-grade contacts that pit and weld prematurely, leading to repeat failures within one season.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always shut off power at both the breaker and the disconnect box before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections before removing the old contactor. Discharge any residual voltage and verify 0V before touching terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse on all in-stock orders.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for Carrier model \u003cstrong\u003ePY3GNA024040AB\u003c\/strong\u003e. Verify your unit's data plate confirms a single-pole contactor before ordering. Not sure? Our fitment team will confirm compatibility before you buy — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640488546675,"sku":"CARRIE-PY3GNA024040AB-CONTACTOR-HN51KB024","price":77.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640488579443,"sku":"CARRIE-PY3GNA024040AB-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_cdeb0dc8-1ad5-4339-a6f3-ad7d1d07bff1.jpg?v=1775021383","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3gna024040ab-contactor-1iwybu","provider":"National HVAC Parts","version":"1.0","type":"link"}