OEM Carrier Control Transformer 40VA 208/240V to 24V for Model PY3PNA060130NB

This OEM control transformer is the factory-specified replacement for the Carrier PY3PNA060130NB packaged unit. The transformer steps down high-voltage supply power (208/240V) to the 24V used by your thermostat, control board, contactor coil, and all low-voltage system components. When it fails, the most common symptoms are a completely unresponsive thermostat, a system that won't respond to any call for heating or cooling, or a tripped fuse on the control board caused by a shorted low-voltage circuit.

• Specs: 40VA capacity | 208/240V primary input | 24V secondary output | 50/60 Hz rated | OEM part number HT01BD209 | Also replaces HT01BD207, HT01CN232, and 9076-00
• OEM vs Generic: The OEM transformer is wound to exact factory VA and voltage tolerances, ensuring the control board and thermostat receive stable, clean 24V power. Generic transformers may deliver marginal voltage under load, causing intermittent lockouts and nuisance fuse failures.
• Install difficulty: 2/5 — Shut off all power to the unit at the disconnect before starting. Tools needed: flathead and Phillips screwdrivers, multimeter, wire stripper. Label all 24V wiring connections before removing the old unit. Verify primary voltage matches your supply before energizing.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PY3PNA060130NB packaged units. Cross-references: HT01BD207, HT01CN232, 9076-00. Always verify your unit's data plate voltage before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you buy — no guesswork required.