Pressure Switch Air Compressor Manual Switch Action None (1) Port 1/4 in FNPS 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 HP @ 1 Phase - 240V 2 hp HP @ 3 Phase - 240V 3 hp HP @ 3 Phase - 480V 1 hp