Packard PF52475 Transformer

The Packard PF52475 Transformer is a heavy-duty, 75VA Class II transformer engineered for multi-tap versatility in commercial HVACR applications. This foot-mount unit handles multi-tap primary voltages of 120, 208, 240, and 480VAC, stepping them down to a consistent 24VAC secondary output. Professionals choose the PF52475 for its high power rating, which provides ample headroom for complex control circuits, zone dampers, and large contactor coils. It features a built-in 3.2 Amp circuit breaker to protect the secondary circuit from overcurrent and short circuits, eliminating the need for external fusing in many installations. The Packard 75VA transformer includes color-coded wire leads for straightforward identification during field wiring and serves as a universal replacement for Mars 50321, Jard 7541C, and UEI UET179R. Whether you are servicing a rooftop unit or an industrial chiller, this step-down transformer ensures reliable pilot-level voltage for your control logic.

Key Benefits:

• Universal Compatibility: Supports 120/208/240/480V primary inputs, making it a versatile "truck stock" item for various job sites.
• Enhanced Protection: Integrated 3.2 Amp manual reset circuit breaker protects sensitive 24V controls from electrical faults.
• High Power Capacity: The 75VA rating allows for more peripheral loads compared to standard 40VA or 50VA models.
• Robust Mounting: Rugged foot-mount design ensures a secure installation inside control panels or equipment housings.
• Class II Rated: Meets UL standards for energy-limiting power sources in HVACR control applications.

Common Questions:

Can the PF52475 replace a 40VA transformer?
Yes, you can always use a higher VA rating than the original, as the 75VA rating indicates the maximum load capacity the transformer can handle without overheating.

How do I wire the multi-tap primary for 480V?
Identify the 480V primary lead (typically black and red/grey, check the specific schematic on the unit) and the common lead. Always cap off unused primary leads with wire nuts to prevent shorting.

What happens if the internal breaker trips?
The integrated 3.2 Amp breaker will pop to interrupt the secondary circuit. Once the downstream short or overload is resolved, you can manually reset it to restore power.

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.