C) acts as a high-limit safety cutoff

while the red/red color-coding ensures rapid identification during field service

Robust Construction: Designed to resist diaphragm fatigue

Standardized Flow Control: Ensures consistent gas flow interruption when paired with a functional 1720 magnet head and thermocouple

Cleveland Controls RFS-4100-040 Switch C) acts as a high-limitThe Cleveland Controls RFS 4100 040 is a heavy duty, field adjustable differential air pressure switch designed for critical proving applications in HVAC and Energy Management Systems. Engineered to detect positive, negative, or differential pressure, this airflow proving switch features a sensing range of 0. 15" WC to 5. 0" WC. The internal silicone diaphragm and snap acting SPDT switch provide reliable performance, rated for 300 VA pilot duty at 115