Functional Devices-RIB TR75VA002 120-24V 75VA Transformer

The Functional Devices RIB TR75VA002 is a professional-grade 75VA class 2 transformer designed for demanding HVACR control circuits. Engineering for reliability, this 120V to 24V step-down transformer features a primary voltage of 120 VAC and a secondary output of 24 VAC, making it an ideal choice for powering 24V thermostats, contactors, and relays. The unit is built with a foot mount configuration for secure installation within junction boxes or control panels. As a direct 75VA transformer replacement for the Johnson Controls TR75VA002, it ensures seamless compatibility for field technicians servicing existing BAS or pneumatic control systems. The integrated manual reset circuit breaker provides essential overcurrent protection without the need for thermal fuse replacement, significantly reducing downtime during troubleshooting. With its robust winding construction and high-quality core laminations, this Class 2 power supply delivers stable voltage regulation under varying load conditions, meeting the rigorous standards required for industrial and commercial climate control applications.

• High Power Capacity: Provides a full 75VA output to handle multiple 24V loads without voltage sag.
• Circuit Protection: Features a manual reset breaker to protect the secondary circuit from shorts and overloads.
• Direct Cross-Reference: Exact technical match for the Johnson Controls TR75VA002, simplifying part sourcing for contractors.
• Versatile Mounting: Standard foot mount design allows for quick integration into various HVAC control enclosures.
• Stable Output: Maintains consistent 24V secondary voltage to prevent chatter in sensitive control relays and contactors.

How do I handle a tripped circuit on the TR75VA002?
This model includes a manual reset button. If an overcurrent event occurs, identify and resolve the short circuit in the 24V line, then press the reset button located on the side of the housing to restore power.

Can this transformer replace a 40VA or 50VA unit?
Yes, as long as the primary and secondary voltages match (120V to 24V), a 75VA transformer provides higher capacity and can safely replace lower VA-rated units, offering better overhead for the circuit.

Is this unit suitable for outdoor HVAC equipment?
The TR75VA002 should be installed within a NEMA-rated enclosure or protected control panel to shield the windings and terminals from moisture and environmental contaminants.

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.