☑️ Fuse
A fuse is a short piece of wire in series circuits that melts if too much current flows through it. During a short circuit or overload, the current through the fuse element increases to more than its specified capacity.
☑️ Breaker circuit
The circuit breaker can open and close the circuit manually or by remote in normal conditions and automatically in the presence of a fault. A relay circuit is also placed next to the circuit breaker for the automatic operation of the circuit breaker in fault conditions.
☑️ Protective relays
The relay is a fault detection component that provides the circuit breaker with the necessary information to cut the circuit by sending a signal. When a fault occurs, the relay contacts are closed and the circuit breaker's sliding coil is energized to open the circuit breaker's connections and disconnect the elements of the power supply system.
☑️ Serge Arster
Surge arresters are used to protect power station equipment against temporary voltage surges, lightning shocks, short circuit shocks, and quick and short voltage increases.
☑️ Contactor
A contactor is designed to rapidly open and close contacts to turn an electrical circuit on and off, the moving contacts quickly collide with the fixed contacts and jump upward. It is used to turn off and on an electric circuit.
☑️ Metal
Bimetals are used to protect electric motors against overload. The basis of the operation of these relays is based on the difference in the longitudinal expansion coefficient of two metals.
☑️ Compartment
All the devices and equipment are installed inside or on the body of the electrical panel. The enclosures are made of different types of metal and plastic.