The on button automatically locks and the off button automatically resets.The control switch is open mode of operation, the model is ka0 - 10kh, the mounting hole distance is about 7.7cm Wiring details, suitable for AC 50hz (60HZ) circuits, voltage up to 380v, 220V.Both 220V single-phase wiring and 380v three-phase wiring can be used.The cabling includes a hotline and a zero line.The power used by the device is less than 1500W.If larger than AC contactor, please cooperate with AC contactor. Easy to use, this switch is designed without NC to directly control the motor and internal threaded terminals ensure easy wiring.Control switch press the green button, button lock switch turns on, press the red button, the green button turns on, the switch turns off.This switch is a commonly used appliance switch in many fields and also has an isolation function Widely used, it is a waterproof control switch, hold switch, drill switch and machine push button.It is widely used in mechanical equipment, textile machinery, distribution boxes, ships, operating rooms, etc.Multifunctional control switch suitable for industrial equipment, production equipment, complete cabinets, factory workshops, etc. Excellent performance, easy to use, direct switch does not require a contactor.The control switch is PC flame retardant material housing, waterproof push button, with plastic protective cover, waterproof and oilproof, longer lasting Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin