{"product_id":"carrier-c50a204064-transformer-h301d7","title":"OEM Carrier Transformer 40VA 120V-24V for C50A204064","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model C50A204064\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01BD702\u003c\/strong\u003e) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier C50A204064\u003c\/strong\u003e commercial packaged unit. The transformer steps down 120V line voltage to the 24V signal voltage required to power your thermostat, control board, contactor coils, and all low-voltage control components. When this transformer fails, the entire control circuit goes dead — the thermostat goes blank, the system stops responding to any calls for heating or cooling, and no components will energize.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | Class 2 transformer | Factory-matched OEM part number HT01BD702 | Hardwired lead connections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HT01BD702 transformer is wound to exact factory VA tolerances, ensuring stable 24V output under full control circuit load. Undersized or off-tolerance generic transformers can overheat, trip internal breakers, or fail prematurely when multiple control components draw simultaneously.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before beginning. Tools needed: flathead and Phillips screwdrivers, wire strippers, multimeter (to confirm 24V output after install). Label or photograph all wire connections before removing the old unit. Always verify primary voltage at the transformer terminals matches your supply before energizing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the \u003cstrong\u003eCarrier C50A204064\u003c\/strong\u003e commercial rooftop packaged unit. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate before ordering. Not sure if this is the right part? Our HVAC parts specialists confirm fitment before you buy — contact us today and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909708632435,"sku":"CARRIE-C50A204064-TRANSFORMER-HT01BD702","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909708665203,"sku":"CARRIE-C50A204064-TRANSFORMER-HT01BD702-GEN","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-HT01BD702_3577212c-2751-4a15-b01b-22efc2fff84f.jpg?v=1782939334","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a204064-transformer-h301d7","provider":"National HVAC Parts","version":"1.0","type":"link"}