The TF5 electrical rating signifies that this unit requires a 200/230V

Broad Material Compatibility: Specifically designed for 45-degree flare connections on copper

High-Speed Contact Separation: Snap-action bimetal element ensures rapid switching to prevent arcing and extend the life of the internal SPST contacts

The #56 designation corresponds to a

Verify 120V across the terminals using a multimeter

White-Rodgers 3L09-1 Limit Switch The TF5 electrical rating signifiesThe White Rodgers 3L09 1 Limit Switch is a high performance 1 2" bimetal disc limit control designed for precise thermal regulation in HVAC furnaces and commercial heating equipment. Engineered for board mounted configurations, this snap disc thermostat operates with an open on rise switch action, effectively breaking the circuit at a fixed open temperature of 140F. As a critical safety component, it prevents heat exchanger overheating by monitoring