Cleveland Controls DFS-231-121 Switch Els PW 17895 The unit is designed to

The unit is designed to remain unaffected by momentary short circuits and is rated for ambient temperatures up to 150°F

this specific model is designed for 208/230V primary voltage

Combustion Efficiency: Maintains proper manifold pressure and burner performance to prevent soot buildup and inefficient fuel consumption

It is compatible with B100 or B400 Series adapter bases

upgrading to a higher amperage rating like this 40 Amp 1-pole contactor is a common practice to increase component lifespan

Cleveland Controls DFS-231-121 Switch Els PW 17895 The unit is designed toThe Cleveland Controls DFS 231 121 is a fixed setpoint diaphragm differential pressure switch engineered for precision performance in HVAC pressure monitoring and combustion air applications. This SPDT air flow switch is factory calibrated to actuate on a pressure rise at 0. 05" . 02" w. c., providing a reliable safety interlock for systems requiring strict static pressure thresholds. Designed for versatility, the unit supports line voltage ranges