{"product_id":"carrier-py3pna030040aa-contactor-1iwybu","title":"OEM Carrier Contactor 24V Coil 2-Pole for PY3PNA030040AA","description":"\u003ch1\u003eOEM Carrier Contactor HN51KB024 for Model PY3PNA030040AA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement contactor for the \u003cstrong\u003eCarrier PY3PNA030040AA\u003c\/strong\u003e packaged unit. The contactor is a high-voltage relay controlled by a 24V signal from the thermostat or control board. When energized, it closes the circuit to deliver line voltage to the compressor and condenser fan motor. A failed contactor is one of the most common causes of an air conditioner that won't start — symptoms include the unit being completely unresponsive, pitted or burned contacts causing intermittent operation, or the system failing to shut off due to welded contacts.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e OEM Part Number HN51KB024 | 2-Pole design | 24V coil voltage | Factory-rated amperage and contact rating matched to Carrier \u003cstrong\u003ePY3PNA030040AA\u003c\/strong\u003e specifications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM contactor features factory-grade silver-alloy contacts and a precision-wound 24V coil, maintaining exact pull-in and drop-out voltage thresholds. Generic contactors may use lower-grade contact materials, leading to premature pitting, arcing, and shortened service life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Always disconnect power at the disconnect box and verify zero voltage with a multimeter before proceeding. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wiring connections before removal. Swap wires one at a time to avoid miswiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as a direct OEM replacement for Carrier model \u003cstrong\u003ePY3PNA030040AA\u003c\/strong\u003e. Always verify coil voltage and pole configuration against your unit's data plate and wiring diagram before ordering. Our fitment team is available to confirm compatibility before you buy — same-day shipping available on all in-stock orders.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640397681011,"sku":"CARRIE-PY3PNA030040AA-CONTACTOR-HN51KB024","price":68.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640397713779,"sku":"CARRIE-PY3PNA030040AA-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_0eec994f-8438-4196-8d09-aff855d18815.jpg?v=1775022176","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3pna030040aa-contactor-1iwybu","provider":"National HVAC Parts","version":"1.0","type":"link"}