Designed as an auto-reset limit switch

and T921 series

Critical Safety Response: Provides reliable circuit interruption during high-temperature events to protect the air handler and dwelling

5 to 3-ton units

Functional Devices-RIB TR20VA001 Transformer Designed as an auto-reset limitThe Functional Devices RIB TR20VA001 is a commercial grade 120V to 24V step down transformer engineered for reliable power distribution in HVACR control circuits. Providing a 20VA power rating, this unit is designed for continuous duty applications where stability is critical for low voltage controllers and relays. The TR20VA001 features inherently limited overcurrent protection, eliminating the need for external fusing and reducing potential failure