Pressure Switch, Differential 12 to 45 psi, Range 30 to 500 psi, Port Type 1-Port 1/4 in FNPT, Contact Form SPDT, NEMA Rating 4X, Actuation Type Diaphragm, Action Standard, Series SA11, AC Contact Rating 15A @ 125/250/480 V, DC Contact Rating 0.25A @ 250V, 0.5A @ 125V