Feature: The outer shell of machinery On/Off Switch is corrosion and oxidation resistant, and the internal contacts are copper alloy to maintain perfect electrical performance. This switch is design with NO NC, can control your motor directly, interior screw terminals ensure easily wiring. Have power outage and undervoltage protection function. once power outages or undervoltage, switch will automatically disconnect.When need power, need to have the power on. Specification: Material:Plastic + Copper Type: ON/OFF Voltage & Current: 380V 10A: AC220V/380V 10A Appearance size: 90x56x48 mm/3.5x2.2x1.9 inch Mounting hole spacing: 78 mm/3.1 inch Package list: 1 x Pushbutton Switch Note: Please allow a little size error due to manual measurement.