Packard PM44450 Transformer

The Packard PM44450 Transformer is a heavy-duty Class 2 rated power solution designed for high-demand HVAC low voltage control circuits. Built for long-term reliability in the field, this 40VA multi-tap transformer features a primary voltage range of 120/208-240V and a stable 24V secondary output. This versatile component is a direct replacement for the Jard 4031M and is engineered for over 60,000 hours of continuous operation under standard load. The multi-mount configuration includes a 4 1/4" x 4 1/4" mounting plate and a 1/2" conduit hub for seamless electrical knockout installation. Whether you are servicing residential air handlers or light commercial rooftop units, the wire lead connections ensure a secure interface for thermostat power and contactor coils. This step-down transformer is a staple for technicians needing a rugged, UL recognized component that handles voltage fluctuations without compromising the integrity of the control board.

Key Technical Benefits

• Universal Multi-Tap Primary: Supports 120V, 208V, and 240V inputs for maximum field flexibility.
• Industrial Durability: Rated for 60,000+ hours of continuous run-time for reduced callbacks.
• Flexible Mounting: Includes a 4 1/4" plate and conduit hub for foot, plate, or knockout mounting.
• Class 2 Certified: Inherently limited power source to protect downstream low voltage components.
• High Compatibility: Efficiently replaces Jard 4031M and other standard 40VA 24V transformers.

Common Installation Questions

Can the PM44450 replace a 30VA transformer?
Yes, you can upgrade a 30VA rated transformer to this 40VA model. The higher volt-ampere rating provides more overhead for additional HVAC accessories like humidifiers or electronic air cleaners without overloading the circuit.

How do I wire this for 240V applications?
For 208/240V primary setups, utilize the specific color-coded wire leads as designated on the technical wiring diagram. Ensure any unused primary leads are capped with wire nuts to prevent shorting against the junction box.

What is the purpose of the 1/2" conduit hub?
The integrated hub allows for direct mounting to a standard electrical knockout, providing a secure mechanical connection and protecting the primary voltage wiring in compliance with local codes.

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.