{"product_id":"carrier-c4850c50z3060500-transformer-h302a1","title":"OEM Carrier 40VA 120V to 24V Control Transformer for C4850C50Z3060500 — Ships Today","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA for Model C4850C50Z3060500\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement control transformer (part# \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier C4850C50Z3060500\u003c\/strong\u003e packaged unit. The transformer steps down 120V line voltage to 24V AC to power the entire low-voltage control circuit — including the thermostat, contactor coil, gas valve, and control board. When it fails, absolutely nothing responds: the thermostat goes blank, the system won't call for heating or cooling, and you may measure zero volts on the secondary side. A shorted transformer will often trip its internal thermal fuse or blow the control-circuit fuse.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | Foot-mount bracket | OEM part number HT01BD236 | Factory-matched to Carrier C4850C50Z3060500 electrical specifications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM transformer is wound to exact VA and voltage tolerances required by the Carrier control board. Undersized or off-tolerance generic transformers overheat under peak load, causing nuisance lockouts and shortened service life — especially in packaged units running simultaneous heating and cooling control loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the disconnect box and verify zero voltage with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, wire nuts or spade connectors. Photograph all wiring connections before disconnecting. Primary wires connect to line voltage; secondary wires feed the 24V control circuit — do not reverse.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock units ship same business day when ordered before 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eC4850C50Z3060500\u003c\/strong\u003e packaged unit. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate before ordering. If your breaker trips or fuse blows immediately upon power-up, inspect the downstream 24V wiring for shorts before installing a new transformer. Our parts specialists are available to confirm fitment — reach out before you order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909790257523,"sku":"CARRIE-C4850C50Z3060500-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909790290291,"sku":"CARRIE-C4850C50Z3060500-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_236f51f3-d4ae-45f7-a58e-771c9009f461.jpg?v=1782899183","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50z3060500-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}