Pressure Switch, DPST, 135/175psi, 1/4"FNPS Price For: Each HP @ 3 Phase - 480V: 1 Contact Form: DPST Range: 60 to 200 psi Item: Pressure Switch NEMA Rating: 1 Action: Standard Application: Air Compressor HP @ 3 Phase - 240V: 3 HP @ 1 Phase - 240V: 2 Manual Switch Action: Auto/Off Unloader: 1/4" Compression Port Type: 1-Port 1/4" FNPS Country of Origin (subject to change): Mexico