Circuit breaker for breaking an electrical circuit

A circuit breaker for breaking a circuit, the circuit breaker being arranged between a power supply and a load, wherein the circuit breaker comprises control means configured to switch switching means of the circuit breaker between an ON-mode in which a current i is fed to the load, and an OFF-mode in which no current is fed to the load;

• wherein the control means is configured to:
• a) obtain a value of the current i fed to the load when the switching means is in the ON-mode;
• b) keep the switching means in the ON-mode if the value of the current i is smaller than a switching current is of the circuit breaker;
• and
• c) switch the switching means into the OFF-mode if the value of the current i is larger than the switching current is of the circuit breaker and switch the switching means from the OFF-mode back into the ON-mode after a first time interval T1;
• wherein the current i is alternating current and wherein the control means is further configured to switch the switching means from the OFF-mode to the ON-mode during a zero crossing of the alternating current.

A circuit breaker for breaking a circuit, the circuit breaker being arranged between a power supply and a load, wherein the circuit breaker comprises control means configured to switch switching means of the circuit breaker between an ON-mode in which a current i is fed to the load, and an OFF-mode in which no current is fed to the load;

• wherein the control means is configured to:
• a) obtain a value of the current i fed to the load when the switching means is in the ON-mode;
• b) keep the switching means in the ON-mode if the value of the current i is smaller than a switching current is of the circuit breaker;
• and
• c) switch the switching means into the OFF-mode if the value of the current i is larger than the switching current is of the circuit breaker and switch the switching means from the OFF-mode back into the ON-mode after a first time interval T1;
• wherein the circuit breaker further comprises current monitoring means configured to:
• monitor the current i fed from the power supply to the load, wherein the current i is a direct current;
• and
• provide a value of the monitored current i to the control means;
• wherein the first time interval T1 is dependent on an energy storing property of the current monitoring means.