Functional Devices TR50VA003 Transformer

The Functional Devices TR50VA003 is a professional-grade 50VA control transformer designed for demanding building automation and HVACR applications. This step-down transformer features a flexible 240/208Vac primary voltage input and a stable 24Vac secondary voltage output, making it a versatile choice for powering 24V control circuits, sensors, and relays. Built with a split-bobbin construction for superior isolation and reliability, this unit includes an integrated 3amp fuse for essential overcurrent protection. Its design allows for multiple installation configurations, featuring both foot mount and dual threaded hub mount (0.500" NPT hubs) capabilities. With color-coded 8-inch wire leads and a durable open-style enclosure, the TR50VA003 ensures efficient field wiring and long-term performance in environments ranging from -30 to 140°F. This Class 2 transformer is UL listed for both the US and Canada, ensuring compliance with strict safety standards for low-voltage power supplies.

• Dual Primary Input: Supports both 240Vac and 208Vac, providing flexibility for various job site power requirements.
• Integrated Protection: Features a factory-installed 3-amp fuse to protect downstream 24V components from short circuits and overloads.
• Versatile Mounting: Includes foot mounting and dual threaded hubs for secure attachment to junction boxes or control panels.
• High Temperature Range: Evaluated for reliable operation in extreme mechanical rooms from -30°F up to 140°F.
• Industrial Build: Split-bobbin design provides high dielectric strength and reduces the risk of electrical noise interference.

Is the 3-amp fuse on the TR50VA003 field replaceable?
According to the manufacturer specifications, the 3-amp fuse is integrated for circuit protection and is typically not intended for field replacement; if the fuse blows, the underlying circuit issue should be diagnostic before replacing the unit.

Can this transformer be used for 120V applications?
No, the TR50VA003 is specifically designed for 240/208Vac primary inputs. For 120Vac applications, a different model within the Functional Devices TR series should be selected.

What is the purpose of the dual threaded hubs?
The dual hubs allow the transformer to be mounted directly to a standard electrical knockout, facilitating easy wiring of both primary and secondary leads through separate conduits if required by 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.