{"product_id":"carrier-yac48140yac103t-transformer-fnyqxl","title":"OEM Carrier Transformer 50VA 120\/208\/240-12\/24V — P201-35150","description":"\u003ch1\u003eOEM Carrier 50VA Control Transformer P201-35150 for Model YAC48140YAC103T\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM step-down transformer for the \u003cstrong\u003eCarrier YAC48140YAC103T\u003c\/strong\u003e packaged unit. The transformer converts high-voltage line power (120\/208\/240 VAC) down to 12\/24 VAC to energize the system's low-voltage control circuit — powering the thermostat, control board, contactors, and safety switches. When the transformer fails, the entire control circuit goes dead: the thermostat goes blank, the system won't respond to calls for cooling or heating, and no contactors will energize. Replacing the transformer is one of the most impactful single-part repairs in packaged HVAC service.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 50 VA | Primary: 120\/208\/240 VAC multi-tap | Secondary: 12\/24 VAC | 60 Hz | Single phase | CSA listed | OEM Part # P201-35150 (also sold as Totaline P201-35150)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the factory-authorized OEM transformer with tight voltage regulation and thermally protected windings. Generic transformers often use undersized cores and cheaper insulation, leading to premature thermal shutdowns and shortened service life — especially in packaged rooftop applications with high ambient temperatures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter, needle-nose pliers. Label all low-voltage wires before removing. Note primary tap wiring to match your supply voltage (120V or 240V). Torque wire nuts securely and verify 24 VAC output before buttoning up the unit.\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 the factory-specified replacement for \u003cstrong\u003eCarrier YAC48140YAC103T\u003c\/strong\u003e packaged HVAC equipment. Verify your unit's supply voltage (120V or 208\/240V) against the transformer's primary tap wiring before installation. Cross-reference OEM part number P201-35150 on your unit's data plate or wiring diagram to confirm fitment. Questions about compatibility? Our HVAC parts team verifies fitment before you order — contact us today and ship it out the same day.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640187277683,"sku":"CARRIE-YAC48140YAC103T-TRANSFORMER-P201-35150","price":56.7,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640187310451,"sku":"CARRIE-YAC48140YAC103T-TRANSFORMER-P201-35150-GEN","price":20.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-P201-35150_a91b25df-f1f5-411b-bd61-34f89ed38ed4.jpg?v=1782942788","url":"https:\/\/nationalhvacparts.com\/products\/carrier-yac48140yac103t-transformer-fnyqxl","provider":"National HVAC Parts","version":"1.0","type":"link"}