The Eaton pushbutton switches are designed with the front side of the switch outfacing on the panel. Used in conjunction with a contact block, these switches are designed to activate machinery by button that is pressed and released. Applications include starting and stopping the machine. Nonilluminated pushbuttons do not feature a light within the button. They are commonly used in areas where added light is not needed. Specs include: Mounting Hole Diameter (mm): 40, Switch Type: Pushbutton Switches Only, Pushbutton Type: Extended (Mushroom Head), Pushbutton Shape: Round, Pushbutton Color: Green, Operator Illumination: Nonilluminated, Operation Type: Momentary (MO), Amperage (mA): 1 (Minimum); 500 (Maximum), Voltage: 5-28 V, Terminal Type: Screw, NEMA Rating: 1; 2; 3; 4; 12; 13; 3R; 4X, Resistance Features: Corrosion Resistant; Oiltight; Watertight, and Standards Met: CSA; CSA C22.2 No. 14 File LR68551; UL 508 File E131568; UL Listed.