providing a reliable 12-24VAC/VDC interface that veteran contractors trust for preventing downstream damage to sensitive HVAC controls

High-grade aluminum construction provides the necessary rigidity and corrosion resistance required for outdoor exposure

Always verify the FLA (Full Load Amps) of your equipment before installation

Common Questions What causes a transformer like the 621807R to fail

Manufactured from durable

Rheem-Ruud 47-20045-02 Limit Switch providing a reliable 12-24VAC/VDC interfaceThe Rheem Ruud 47 20045 02 Limit Switch is a critical safety component designed for high voltage HVAC systems. As a furnace high limit switch, this DPST normally closed switch is engineered to break the electrical circuit if internal plenum temperatures exceed safe operating parameters. This specific model features a 150F fixed open temperature and a 110F fixed close temperature, facilitating an auto reset function once the system cools to a safe