This switch have the following function that derived from power-off and under voltage protection: 1. Double Pole cut off 2. Brake function with one pole cut off 3. These two versions can be combined with overload protection switch to achieve under voltage and overload protection 4. Widely used in machine tools, large-scale power tools, garden machinery above, belonging to the safety switch, the device will not turn on after power off unexpectedly, need to press the green start button will turn on. Product name: Electromagnetic Push button switch Rated Voltage:AC250V Rated Frequency: 50/60Hz Degree Protection: IP55 Number of operating Cycles: 5E4 Ambient temperature: T85/55 Pin: 4PIN Material: plastic colour: yellow+black Package Contents: 2 x Electromagnetic Switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.