The MARS 50341 Transformer is a heavy-duty, 100VA NEMA Class 2 control power source designed for high-demand HVACR applications. This multi-tap transformer offers superior versatility for contractors, supporting primary input voltages of 120V, 208V, 240V, and 480V to deliver a consistent 24V secondary output. Built with an open-frame design and end bells, it features welded laminations to ensure quiet operation and low heat rise during continuous duty cycles. A critical feature for field reliability is the integrated manual reset circuit breaker, which provides robust protection against overloads and short circuits without requiring fuse replacements. This foot-mount transformer is a direct universal replacement for common industry models like the Jard 10041C and Packard PF524100. Whether you are servicing commercial rooftop units or residential furnaces, the color-coded wire leads simplify 24V control circuit troubleshooting and speed up installation in the field. Key Benefits for Technicians Universal Voltage Compatibility: Supports 120/208/240/480V primaries, reducing the need to carry multiple SKUs on the service truck. Enhanced Circuit Protection: The built-in manual reset button saves time and prevents component damage during control circuit shorts. High Power Capacity: The 100VA rating provides ample overhead for complex systems with multiple contactors, relays, and accessories. Durable Construction: UL recognized and designed for low-noise performance in both refrigeration and air conditioning environments. Common Questions Can I use this to replace a 40VA or 75VA transformer? Yes. You can always upsize the VA rating in a control circuit. The 100VA capacity ensures the transformer won't overheat when powering additional 24V loads, provided the secondary voltage matches. How do I wire the multi-tap primary for 208V vs 240V? Always use the specific 208V or 240V color-coded lead as identified on the wiring diagram. Using the 240V tap on 208V line voltage will result in low secondary voltage, causing contactors to chatter or fail to pull in. What does the manual reset button do? It acts as a resettable fuse. If the control circuit pulls more than safe amperage or a short occurs, the breaker trips to protect the internal windings. Once the fault is cleared, simply press the button 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.
