Differential Pressure Switch 1.4-5.5 w.c Application 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 @ 125/250/480 V AC 60 Hz Resistive Housing Material Aluminum Housing Type NEMA-3 Enclosure IP Rating IP54 Includes Drain Plug O-Ring Seal Cover Maximum Differential Pressure Setting 5.5 in wc Maximum Operating Temperature 140 Degrees F Maximum Pressure Rating 10 psi