Pressure Switch, Contact Form SPDT, Electrical Connection Type Screw Terminals, Electrical Rating 15 A @ 120 to 480V AC, 60 Hz. Resistive 1/8 HP @ 125V AC, 1/4 HP @ 250V AC, 60 Hz. De-Rate to 10 A, Housing Type Conduit Box, Input Voltage 120 to 480V AC, Maximum Differential Pressure Setting 1 in wc, Maximum Operating Temperature 180 Degrees F, Maximum Pressure Rating 25 psi, Maximum Pressure Setting 1 in wc, Minimum Differential Pressure Setting 0.3 in wc