Precision-calibrated 155F opening temperature for accurate furnace troubleshooting and safety

Look for carbon tracking

preventing equipment damage and ensuring system safety

monitoring internal heat exchanger temperatures to prevent overheating

reducing labor time during field installations

Functional Devices RIB2421B Relay Precision-calibrated 155F opening temperature forThe Functional Devices RIB2421B is a versatile enclosed relay designed for demanding commercial and industrial power control applications. This SPDT relay features a 20 Amp contact rating, making it a reliable choice for switching HVAC control systems, motors, and lighting loads. Built for convenience, the "Relay in a Box" design includes pre wired 16 inch, 600V rated leads and a 1 2" NPT nipple, allowing for rapid installation into a standard conduit