{"product_id":"carrier-lc748lccsrmpx2100-contactor-1h3zxi","title":"OEM Carrier Contactor 2-Pole 24V Coil for LC748LCCSRMPX2100","description":"\u003ch1\u003eOEM Carrier 2-Pole Contactor 24V Coil for Model LC748LCCSRMPX2100\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement contactor (part number \u003cstrong\u003eHN52TC040\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier LC748LCCSRMPX2100\u003c\/strong\u003e. The contactor is the high-voltage relay that bridges 240V power from your disconnect to the compressor and condenser fan motor when the thermostat calls for cooling. When the contactor fails — whether from pitted contacts, a burned coil, or a stuck plunger — the system will either refuse to start entirely, cycle on and off erratically, or run continuously without responding to the thermostat. Replacing it with the correct OEM part ensures proper contact resistance and coil pull-in voltage, protecting your compressor investment.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-Pole configuration | 24V control coil | Factory-rated amperage for Carrier LC748LCCSRMPX2100 | Matched contact material and spring tension per OEM specification\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM contactors like the HN52TC040 use factory-spec contact alloys and coil windings. Generic substitutes frequently exhibit higher contact resistance and shorter coil life, leading to premature compressor wear and repeat service calls.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Always shut off power at the disconnect and verify zero voltage with a multimeter before proceeding. Tools needed: flathead and Phillips screwdrivers, 1\/4\" nut driver, needle-nose pliers, multimeter. Photograph all wiring before disconnecting. Discharge any capacitors in the same compartment before working.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed and factory-spec'd for the Carrier \u003cstrong\u003eLC748LCCSRMPX2100\u003c\/strong\u003e. Always confirm the OEM part number \u003cstrong\u003eHN52TC040\u003c\/strong\u003e against your unit's wiring diagram or data plate before ordering. Have questions about fitment? Our HVAC parts specialists verify compatibility before your order ships — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909292511603,"sku":"CARRIE-LC748LCCSRMPX2100-CONTACTOR-HN52TC040","price":31.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909292544371,"sku":"CARRIE-LC748LCCSRMPX2100-CONTACTOR-HN52TC040-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-HN52TC040_eea5e6bc-cf5d-4266-a645-12b4416d9800.jpg?v=1782904828","url":"https:\/\/nationalhvacparts.com\/products\/carrier-lc748lccsrmpx2100-contactor-1h3zxi","provider":"National HVAC Parts","version":"1.0","type":"link"}