{"product_id":"carrier-py1pna042100adba-contactor-1iwybu","title":"OEM Carrier Contactor 24V Coil 2-Pole for PY1PNA042100ADBA","description":"\u003ch1\u003eOEM Carrier Contactor 24V Coil 2-Pole for Model PY1PNA042100ADBA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement contactor (part number \u003cstrong\u003eHN51KB024\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier PY1PNA042100ADBA\u003c\/strong\u003e packaged unit. The contactor is a high-voltage relay that receives a low-voltage (24V) signal from the thermostat or control board and switches line voltage to the compressor and condenser fan motor. When the contactor fails — due to pitted or burned contacts, a stuck plunger, or a failed coil — the system will either refuse to start entirely, run continuously without shutting off, or short-cycle under load.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-Pole configuration | 24V AC coil voltage | 40A contact rating | Direct OEM factory replacement for part number HN51KB024\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM contactor uses factory-spec silver-alloy contacts and a precision-wound coil, delivering tighter pull-in voltage tolerance and longer service life versus generic contactors that may use inferior contact materials prone to early pitting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Requires disconnecting line-voltage power at the disconnect box before servicing. Tools needed: flathead and Phillips screwdrivers, 1\/4\" and 5\/16\" nut drivers, needle-nose pliers, multimeter (to verify coil continuity and contact resistance). Always photograph existing wiring before removal.\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 stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the \u003cstrong\u003eCarrier PY1PNA042100ADBA\u003c\/strong\u003e packaged unit. Always confirm coil voltage and pole configuration on your unit's data plate before ordering. Our HVAC parts specialists are available to verify fitment — contact us before you buy if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640957260147,"sku":"CARRIE-PY1PNA042100ADBA-CONTACTOR-HN51KB024","price":68.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640957292915,"sku":"CARRIE-PY1PNA042100ADBA-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_9e7578de-de9e-4912-9d83-d55b2b8cc7a4.jpg?v=1775022153","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1pna042100adba-contactor-1iwybu","provider":"National HVAC Parts","version":"1.0","type":"link"}