The switch features power outage and undervoltage protection with bipolar and unipolar cut-off functions. Both versions can be combined with overload protection switches for comprehensive undervoltage and overload protection. Commonly used in machine tools, large power tools, and garden machinery. This is a safety switch that prevents automatic restart after a power interruption; the device must be manually restarted by pressing the green start button. Type: AC220V KJD17 5 Pin Color: Black Material: Plastic Package Contents: 1 x Electromagnetic Push Button Switch Note: Other products are not included. Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowance: +/- 1-3 cm.