Xiaobian and everyone to understand, automation equipment generally has the following components: indicator: generally most are light-emitting diodes, long life, neon bulbs and bulbs and other short life.
Button and emergency stop switch: button is commonly used in pneumatic, temporary and other control keys, but also some rotary button control; The emergency stop button is generally red and yellow.
Fuse: it is mainly used to protect the circuit. When the voltage and current are too large, it can fuse the protection circuit.
Transfer switch and power switch: control button.
Circuit breaker: it is mainly used to restore the short circuit protection. When the circuit and electrical device have instantaneous short circuit and instantaneous high current, it will automatically trip to protect the back circuit device.
AC contactor: it is mainly used to control the power on and power off of the equipment in the main circuit. Generally, the current is large. The contact is used to control the power on.
Intermediate relay: same as AC contactor, it plays the role of protecting circuit.
Common parts of automation equipment
Thermal relay: it is a kind of thermal element, which is mainly used for the protection of equipment with high temperature and automatic short circuit protection of the lines behind.
Delay protector: generally divided into power on delay and power off delay.
Knife switch: it is mainly used for manual power off and electric control, generally divided into two knives and three knives.
Leakage switch: mainly used to protect personal safety, there are single-phase and three-phase leakage switch.


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