Functional Devices TR50VA022US Transformer
The Functional Devices TR50VA022US is a versatile, American-made 50VA control transformer designed for multi-tap versatility in demanding HVACR and automation environments. Engineered to handle a wide array of primary input voltages including 120/208/240/277/480 VAC, this Class 2 transformer provides a consistent 24 VAC secondary output for powering thermostats, relays, and sensors. The integrated secondary circuit breaker offers essential overcurrent protection, allowing for quick resets without the need for fuse replacements during field diagnostics. Its foot and dual threaded hub mount configuration, featuring 0.5-inch NPT hubs, ensures secure installation in various junction box and panel layouts.
Built with a split-bobbin construction to maximize dielectric strength and minimize noise, the TR50VA022US represents a reliable solution for technicians requiring a "truck stock" transformer that covers nearly all common commercial and industrial voltages. The 9.5-inch color-coded wire leads facilitate rapid identification and wiring, while the UL5085-3 listing confirms compliance with rigorous safety standards for energy-limited circuits. This unit is rated for an ambient operating range of -30°F to 140°F, making it suitable for both indoor control cabinets and shaded outdoor enclosures.
Key Benefits- Multi-Tap Primary: Supports 480/277/240/208/120 VAC, reducing the need to carry multiple single-voltage units.
- Integrated Protection: Manual reset secondary circuit breaker protects the 24V control circuit from shorts and overloads.
- Flexible Mounting: Equipped with both a mounting foot and dual threaded hubs for versatile positioning.
- High Reliability: Features 100,000-hour MTBF and a robust split-bobbin design.
- Safety Certified: Meets Class 2 UL Us/Ca, CE, and RoHS requirements for professional-grade installations.
What should I check if the secondary circuit breaker keeps tripping?
Frequent tripping usually indicates a short circuit in the 24V field wiring or a low-voltage component, such as a contactor coil or solenoid, that is drawing more than the rated 50VA. Isolate the thermostat, relays, and other loads one by one to identify the source of the high current draw.
Can I use this transformer with 120V and 480V simultaneously?
No. Only one primary voltage lead should be connected to the hot leg of your power source at a time. Always cap off the unused primary leads with wire nuts to prevent accidental contact or shorting.
Does this unit have internal thermal fuse protection?
In addition to the external manual-reset breaker, this transformer is designed to be inherently or non-inherently limited depending on the specific fault condition, complying with Class 2 safety standards to prevent overheating during a failure.
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.
Functional Devices TR50VA022US Transformer
The Functional Devices TR50VA022US is a versatile, American-made 50VA control transformer designed for multi-tap versatility in demanding HVACR and automation environments. Engineered to handle a wide array of primary input voltages including 120/208/240/277/480 VAC, this Class 2 transformer provides a consistent 24 VAC secondary output for powering thermostats, relays, and sensors. The integrated secondary circuit breaker offers essential overcurrent protection, allowing for quick resets without the need for fuse replacements during field diagnostics. Its foot and dual threaded hub mount configuration, featuring 0.5-inch NPT hubs, ensures secure installation in various junction box and panel layouts.
Built with a split-bobbin construction to maximize dielectric strength and minimize noise, the TR50VA022US represents a reliable solution for technicians requiring a "truck stock" transformer that covers nearly all common commercial and industrial voltages. The 9.5-inch color-coded wire leads facilitate rapid identification and wiring, while the UL5085-3 listing confirms compliance with rigorous safety standards for energy-limited circuits. This unit is rated for an ambient operating range of -30°F to 140°F, making it suitable for both indoor control cabinets and shaded outdoor enclosures.
Key Benefits- Multi-Tap Primary: Supports 480/277/240/208/120 VAC, reducing the need to carry multiple single-voltage units.
- Integrated Protection: Manual reset secondary circuit breaker protects the 24V control circuit from shorts and overloads.
- Flexible Mounting: Equipped with both a mounting foot and dual threaded hubs for versatile positioning.
- High Reliability: Features 100,000-hour MTBF and a robust split-bobbin design.
- Safety Certified: Meets Class 2 UL Us/Ca, CE, and RoHS requirements for professional-grade installations.
What should I check if the secondary circuit breaker keeps tripping?
Frequent tripping usually indicates a short circuit in the 24V field wiring or a low-voltage component, such as a contactor coil or solenoid, that is drawing more than the rated 50VA. Isolate the thermostat, relays, and other loads one by one to identify the source of the high current draw.
Can I use this transformer with 120V and 480V simultaneously?
No. Only one primary voltage lead should be connected to the hot leg of your power source at a time. Always cap off the unused primary leads with wire nuts to prevent accidental contact or shorting.
Does this unit have internal thermal fuse protection?
In addition to the external manual-reset breaker, this transformer is designed to be inherently or non-inherently limited depending on the specific fault condition, complying with Class 2 safety standards to prevent overheating during a failure.
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.
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Description
The Functional Devices TR50VA022US is a versatile, American-made 50VA control transformer designed for multi-tap versatility in demanding HVACR and automation environments. Engineered to handle a wide array of primary input voltages including 120/208/240/277/480 VAC, this Class 2 transformer provides a consistent 24 VAC secondary output for powering thermostats, relays, and sensors. The integrated secondary circuit breaker offers essential overcurrent protection, allowing for quick resets without the need for fuse replacements during field diagnostics. Its foot and dual threaded hub mount configuration, featuring 0.5-inch NPT hubs, ensures secure installation in various junction box and panel layouts.
Built with a split-bobbin construction to maximize dielectric strength and minimize noise, the TR50VA022US represents a reliable solution for technicians requiring a "truck stock" transformer that covers nearly all common commercial and industrial voltages. The 9.5-inch color-coded wire leads facilitate rapid identification and wiring, while the UL5085-3 listing confirms compliance with rigorous safety standards for energy-limited circuits. This unit is rated for an ambient operating range of -30°F to 140°F, making it suitable for both indoor control cabinets and shaded outdoor enclosures.
Key Benefits- Multi-Tap Primary: Supports 480/277/240/208/120 VAC, reducing the need to carry multiple single-voltage units.
- Integrated Protection: Manual reset secondary circuit breaker protects the 24V control circuit from shorts and overloads.
- Flexible Mounting: Equipped with both a mounting foot and dual threaded hubs for versatile positioning.
- High Reliability: Features 100,000-hour MTBF and a robust split-bobbin design.
- Safety Certified: Meets Class 2 UL Us/Ca, CE, and RoHS requirements for professional-grade installations.
What should I check if the secondary circuit breaker keeps tripping?
Frequent tripping usually indicates a short circuit in the 24V field wiring or a low-voltage component, such as a contactor coil or solenoid, that is drawing more than the rated 50VA. Isolate the thermostat, relays, and other loads one by one to identify the source of the high current draw.
Can I use this transformer with 120V and 480V simultaneously?
No. Only one primary voltage lead should be connected to the hot leg of your power source at a time. Always cap off the unused primary leads with wire nuts to prevent accidental contact or shorting.
Does this unit have internal thermal fuse protection?
In addition to the external manual-reset breaker, this transformer is designed to be inherently or non-inherently limited depending on the specific fault condition, complying with Class 2 safety standards to prevent overheating during a failure.
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.
