Functional Devices TR75VA004 Transformer

The Functional Devices TR75VA004 is a versatile 75VA multi-tap transformer designed for reliable power stepping in commercial and industrial HVACR control circuits. Featuring a universal primary input of 120/208/240/480 Vac and a 24 Vac secondary output, this unit eliminates the need to carry multiple single-voltage transformers on the service truck. The integrated circuit breaker provides essential overcurrent protection, allowing for quick resets without the downtime of hunting for replacement fuses. Installation is streamlined via the dual-mount configuration, offering both foot mounting and a 1/2-inch single threaded hub for secure attachment to junction boxes or control panels. The side-opening design ensures accessibility for wiring in tight enclosures. Built for high-duty cycles, this Class 2 transformer maintains stable secondary voltage under load, making it a dependable choice for powering 24V contactors, relays, and digital controllers in demanding environments.

• Universal Compatibility: Support for four primary voltages ensures this unit fits most site power requirements.
• Integrated Protection: Manual reset circuit breaker protects the secondary circuit from shorts and overloads.
• Flexible Mounting: Foot mount or single threaded hub options allow for versatile positioning.
• 75VA Power Rating: Provides ample headroom for larger control strings and multiple solenoid loads.
• Simplified Wiring: Side-opening access facilitates faster terminations during field retrofits.

What is the purpose of the integrated circuit breaker?

The breaker acts as a resettable safety mechanism that protects the transformer's secondary windings from damage caused by external shorts or excessive current draw.

Can this transformer be used in NEMA 1 enclosures?

Yes, the threaded hub allows for direct mounting to standard knockouts in electrical cabinets and control boxes.

How do I select the correct primary lead?

Identify your line voltage (120, 208, 240, or 480V) and connect the corresponding color-coded lead while ensuring all unused leads are properly capped with wire nuts.

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.