{"product_id":"carrier-c50a405062-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C50A405062","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V→24V for Model C50A405062\u003c\/h1\u003e\u003cp\u003eThis OEM control circuit transformer is the factory-specified replacement for the \u003cstrong\u003eCarrier C50A405062\u003c\/strong\u003e commercial packaged unit. The transformer steps down 120V line voltage to the 24V signal voltage required by the thermostat, control board, contactor coil, and all low-voltage safety circuits. When the transformer fails, the entire control circuit goes dead — the thermostat goes blank, the system will not respond to any call for heating or cooling, and no error codes will display because the board itself loses power. OEM part numbers \u003cstrong\u003eHT01BD236\u003c\/strong\u003e and \u003cstrong\u003eHT01BD702\u003c\/strong\u003e are direct factory replacements for this application.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary: 120V | Secondary: 24V | Compact chassis-mount design | Factory-matched impedance and thermal protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and impedance specs for the C50A405062 control board. Undersized or off-spec generic transformers can sag under load, causing nuisance lockouts, contactor chatter, or premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before servicing. Tools needed: Phillips and flathead screwdrivers, wire stripper, multimeter. Verify 24V output after installation before restoring system power. Always label low-voltage wire connections before removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eC50A405062\u003c\/strong\u003e commercial rooftop\/packaged unit. Replaces OEM part numbers HT01BD236 and HT01BD702. Confirm your unit's control circuit voltage requirements on the wiring diagram inside the access panel before ordering. Need help verifying fitment? Our HVAC parts specialists confirm compatibility before you buy — no guesswork.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909679796595,"sku":"CARRIE-C50A405062-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909679829363,"sku":"CARRIE-C50A405062-TRANSFORMER-HT01BD236-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-HT01BD236_fad44043-fcc1-49bd-a87b-0ebf2c531234.jpg?v=1782940542","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c50a405062-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}