Pressure Switch Air Compressor Manual Switch Action None (1) Port 1/4 in MNPT Pressure Switch Factory On/Off Setting 135/175 psi 1/4 in Compression Pressure Switch Unloader Pressure Switch Differential 40 psi Pressure Switch Range 60 to 200 psi Pressure Switch Electrical Contact Form DPST Pressure Switch Action Standard NEMA Rating 1 Series 9013FHG HP @ 1 Phase - 120V 1-1/2 HP @ 1 Phase - 240V 2 HP @ 3 Phase - 240V 3 HP @ 3 Phase - 480V 1