{"product_id":"carrier-ca16na03000gaaba-contactor-1iwxlq","title":"OEM Carrier 40A Contactor 2-Pole 24V Coil for CA16NA03000GAABA","description":"\u003ch1\u003eOEM Carrier 2-Pole Contactor 24V Coil for Model CA16NA03000GAABA\u003c\/h1\u003e\u003cp\u003eThis OEM contactor (part# \u003cstrong\u003eHN51KC024\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier CA16NA03000GAABA\u003c\/strong\u003e single-stage split-system air conditioner. The contactor is a high-voltage relay controlled by a 24V signal from your thermostat. When the thermostat calls for cooling, the contactor closes and delivers line voltage to the compressor and condenser fan motor. A failed contactor means your outdoor unit simply won't respond — you may hear a click at the thermostat but see zero activity at the condenser, or the unit may run continuously due to welded contacts.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-Pole configuration | 24V coil voltage | 30–40A contact rating | Direct OEM replacement — Part# HN51KC024 | Factory-matched electrical tolerances for reliable switching\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM contactors use silver-alloy contact tips rated for thousands of switching cycles. Generic alternatives often use lower-grade alloys that pit and weld prematurely, leading to compressor damage or a unit that won't shut off.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, and wire labels or tape. Photograph all wiring connections before removing the old contactor. Line and load terminals must be correctly identified — do not reverse.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. In-stock units ship same business day when ordered before 3 PM EST.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the \u003cstrong\u003eCarrier CA16NA03000GAABA\u003c\/strong\u003e 3-ton split-system air conditioner. Always verify your existing contactor's pole count, coil voltage, and amperage rating against your unit's data plate before ordering. Our parts specialists are available to confirm fitment — order with confidence and get your system back up and running today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909649125747,"sku":"CARRIE-CA16NA03000GAABA-CONTACTOR-HN51KC024","price":31.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909649158515,"sku":"CARRIE-CA16NA03000GAABA-CONTACTOR-HN51KC024-GEN","price":23.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-contactor-2pole-HN51KC024_f394ade3-aa49-4982-874d-360cbb3d585f.jpg?v=1782898895","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ca16na03000gaaba-contactor-1iwxlq","provider":"National HVAC Parts","version":"1.0","type":"link"}