Large Diaphragm Pressure Switch Application Air Conditioning Duct Heater Control Industrial HVAC Contact Form SPDT Electrical Connection Type Screw Terminals Electrical Rating 1/4 HP @ 250 V AC 60 Hz 1/8 HP @ 125 V AC 15 A @ 120 to 480 V AC 60 Hz Resistive Housing Material Steel Maximum Differential Pressure Setting 1 in wc Maximum Operating Temperature 110 Degrees F Maximum Pressure Rating 10 psig Maximum Pressure Setting 1 in wc Minimum Differential Pressure Setting 0.2 in wc