We briefly list some commonly used electrical components: circuit breaker series, all kinds of switches, contactors, relay series, all kinds of buttons, indicators, and then inverter and PLC. All kinds of circuit breakers we commonly use are generally: air switches, leakage protectors, fuses, over and under voltage protectors and so on. Circuit breaker graphic symbol Switch symbol plus graphic symbol AC contactor AC contactor is divided into coil and contact two parts, when using must pay attention to the voltage of the coil.
Corresponding symbol Thermal overload relay: commonly used to protect the motor corresponding symbol intermediate relay Intermediate relay symbol various button switches all kinds of button switch switch symbol of various colors of indicator switch stroke switch stroke switch symbol frequency converter PLC It is recommended that friends who are beginning to learn electrical automation find some corresponding circuit diagrams on the Internet and check them to see the effect. Do more, think more.
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