Circuit breakers ensure both economical power consumption and the safe operation of the electrical network.
Their operating concept is simple:
If a suitable card is inserted into the circuit breaker card holder, the devices connected to the circuit breaker receive mains voltage, but after the card is removed, the circuit breaker relay switches over according to the set timing, so that the connected devices no longer receive mains voltage.
When used under higher loads (e.g., power supply for an complete apartment or house), a separate magnetic switch must be used!