1. Self-locking switch indicates that the lock function of the switch does not automatically spring up when it is pressed. If you press it, the button will not spring up when you release it. It's called a self-locking switch.

2. Since the self-lock is self-locked (it will not be disconnected) after the power is energized, it needs other lines to disconnect it. A motor used to control higher power with a contactor. The starting button in the control circuit is generally not self-locking function, after pressing it will spring up, so it is necessary to use a group of normally open contacts in the contactors and connected to the button to do self-locking, also known as self-protection, so that the circuit can work normally.

3. Self-locking switch in forward and reverse and other multifunctional control circuits, self-locking can also prevent mistakes, ensure the accuracy of the control circuit. In a normal circuit, a switch is pressed and the circuit is energized. Loosen the switch and the circuit is off again. Once the switch is pressed, it can automatically maintain continuous power until the other switch is pressed to disconnect the circuit; Such a circuit is called a self-locking circuit.

4. Self-locking switch, which is when you press it, it is switched on, until you press it a second time, its lock will pop off, the principle is like your crude oil pen