Shini SG-23 Series, Руководство пользователя

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2.3.2 Electrical Components in Electrical Components box
Picture 2-6: Main electrical components
1. Transformer, which supplies proper voltage for control circuit.
2. PCB which controls the start and stop of the machine.
3. Gate circuit breaker
，
which can perform the function of circuit isolation and
protection.
4. Fuse, which performs the function of overloading protection and short circuit
protection in control circuit.
5. Intermediate relay, which performs the function of switch and connection of
contact point in control circuit.
6. Contactor, which can switch on and switch off the main circuit from a long
distance.
7. Thermo overload relay, which can protect the motor when overloading or
open phase.