{"product_id":"carrier-tchc2550hecmrap600-transformer-h301d7","title":"OEM Carrier Transformer 460V Pri 24V Sec 75VA — TCHC2550HECMRAP600","description":"\u003ch1\u003eOEM Carrier Transformer 460V Primary 24V Secondary 75VA for Model TCHC2550HECMRAP600\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier replacement transformer (part number \u003cstrong\u003eHT01BD702\u003c\/strong\u003e) for the \u003cstrong\u003eTCHC2550HECMRAP600\u003c\/strong\u003e commercial HVAC unit. The transformer steps down the high-voltage 460V primary supply to the 24V AC control circuit voltage that powers your thermostat, relays, contactor coils, and control board. When this transformer fails, the entire low-voltage control circuit loses power — nothing responds. Symptoms include a completely unresponsive system, tripped secondary fuses, or a 24V circuit that reads zero volts at the board.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 460VAC primary | 24V AC secondary | 75VA rated | Steel core with copper windings | Dimensions approx. 4.30″ × 3.25″ × 3.50″\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This factory-authorized OEM part is built to exact Carrier voltage and VA tolerances. Undersized or off-spec generic transformers can sag under load, causing intermittent control board faults and premature contactor coil failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Work must be performed with power fully disconnected at the disconnect and breaker. Tools needed: multimeter, insulated screwdrivers, wire strippers, needle-nose pliers. Label all 24V secondary wiring before removal. Confirm fuse integrity on the secondary circuit before energizing.\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 Direct OEM replacement for Carrier model \u003cstrong\u003eTCHC2550HECMRAP600\u003c\/strong\u003e commercial HVAC equipment. Verify 460V primary supply voltage and 75VA rating on your unit's data plate before ordering. Our parts specialists are available to confirm fitment — call or chat before you order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640275390835,"sku":"CARRIE-TCHC2550HECMRAP600-TRANSFORMER-HT01BD702","price":70.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640275423603,"sku":"CARRIE-TCHC2550HECMRAP600-TRANSFORMER-HT01BD702-GEN","price":23.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-blower-motor-ecm-HT01BD702.jpg?v=1782942749","url":"https:\/\/nationalhvacparts.com\/products\/carrier-tchc2550hecmrap600-transformer-h301d7","provider":"National HVAC Parts","version":"1.0","type":"link"}