{"product_id":"carrier-c4850c50zn050600-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V to 24V for C4850C50ZN050600 — Ships Today","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA for Model C4850C50ZN050600\u003c\/h1\u003e\u003cp\u003eThis is the OEM factory-replacement control transformer (part# \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) designed specifically for the \u003cstrong\u003eCarrier C4850C50ZN050600\u003c\/strong\u003e packaged unit. The transformer steps down 120V line voltage to 24V AC to power the low-voltage control circuit — including the thermostat, contactor coil, and all safety switches. When this transformer fails, the entire control circuit goes dead: the thermostat goes blank, the system won't respond to any call for heating or cooling, and no safety or diagnostic codes will appear on the control board.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 120V primary \/ 24V secondary | Direct OEM replacement | Part number HT01BD236 | Factory-matched impedance and thermal protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to Carrier's exact VA rating and insulation class. Generic transformers frequently underrate their VA capacity, causing overheating and early burnout — especially when multiple accessories share the 24V circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Photograph all low-voltage wiring connections before disconnecting. The transformer mounts to the control panel with two screws and uses spade or wire-nut connections.\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 Engineered as a direct OEM replacement for the Carrier \u003cstrong\u003eC4850C50ZN050600\u003c\/strong\u003e packaged unit. Always verify the 40VA rating and primary\/secondary voltages on your unit's data plate before ordering. If your system has added accessories such as an air purifier or humidifier on the 24V circuit, confirm total VA load does not exceed transformer capacity. Our parts specialists are available to verify fitment before you order — in stock and ready to ship today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909772726643,"sku":"CARRIE-C4850C50ZN050600-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909772759411,"sku":"CARRIE-C4850C50ZN050600-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_ee89ca5c-e25f-41c3-89dc-c4397dce626b.jpg?v=1782939072","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50zn050600-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}