OEM Carrier Transformer 460V Primary / 230V Secondary 1564VA — Model PY3GEAA60090AA

This is the genuine OEM factory-replacement power transformer (part number HT01BC701) for the Carrier PY3GEAA60090AA commercial packaged rooftop unit. The transformer steps down the unit's 460V primary supply voltage to a 230V secondary output, distributing power to essential system components that operate at lower voltages. When this transformer fails, the result is typically a complete loss of control power — the unit will not respond to thermostat calls, display any status, or attempt to start. Do not overlook a faulty transformer when diagnosing a completely unresponsive rooftop unit.

• Specs: 460V primary | 230V secondary | 1564VA capacity | OEM part number HT01BC701 | Manufactured by Basler Electric (Factory Authorized Parts)
• OEM vs Generic: This Factory Authorized Parts (FAP) OEM transformer is wound and rated to exact Carrier factory specifications. Aftermarket alternatives frequently underrate VA capacity and use inferior core materials, leading to premature thermal failure and potential downstream component damage.
• Install difficulty: 3/5 — High-voltage commercial work. Requires isolation of 460V supply before beginning any work. Tools needed: multimeter, insulated screwdrivers, wire crimps, and appropriate PPE. Strongly recommended to be performed by a licensed commercial HVAC/R technician.
• Warranty: 1-year OEM factory warranty. In-stock units ship same business day from our warehouse.

Compatibility: Engineered as the direct OEM drop-in replacement for the Carrier PY3GEAA60090AA commercial rooftop unit. Always verify your unit's data plate voltage specifications match the 460V primary / 230V secondary rating before ordering. Our HVAC parts specialists are available to confirm fitment prior to purchase — contact us before you order.