Reznor 103055 Transformer

The Reznor 103055 Transformer is a critical OEM replacement component designed for high-reliability voltage regulation within industrial and commercial HVACR systems. This step-down transformer efficiently converts a 120V primary input to a stabilized 24V secondary output, providing the necessary low-voltage power for control circuits, gas valves, and ignition modules. With a 40VA power rating, it is specifically engineered to handle the inductive loads of Reznor unit heaters and duct furnaces, ensuring seamless integration with existing system logic and safety protocols.

As a veteran-grade HVAC control transformer, the 103055 features robust wire leads for secure terminations and a compact footprint suitable for tight cabinet installations. Maintaining the correct VA capacity is vital for preventing control board chatter or premature component failure. This 120V to 24V step-down transformer is the direct Reznor replacement part for ensuring your equipment operates within original engineering specifications, maintaining the stability of thermostats and relay coils across demanding duty cycles.

• OEM Compatibility: Exact fit for Reznor Model SC and other compatible unit heaters, eliminating mounting modifications.
• Optimized Power Delivery: The 40VA rating provides sufficient overhead for 24V control strings without voltage drop.
• Durable Construction: Engineered to withstand the high-temperature environments typical of furnace burner compartments.
• Simplified Wiring: Pre-stripped wire leads allow for rapid swap-outs during emergency service calls.

What happens if I use a lower VA transformer?
Using a transformer with less than 40VA can cause the secondary voltage to sag under load, leading to inconsistent relay operation or burner lockout. Always match or exceed the original 40VA specification.

Is the Reznor 103055 compatible with 208V or 240V systems?
No. This specific model is designed for a 120V primary source. Applying higher primary voltage will result in immediate component failure and potential damage to the 24V control circuit.

How do I verify a failing transformer?
Check for 120V at the primary leads; if primary power is present but the secondary output is 0V or significantly below 24V under load, the internal windings are likely compromised.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.