Automatic reclosing alternating current circuit breaker

An alternating current circuit breaker, comprising:

• a live line between a live supply connecting terminal and a live load connecting terminal;
• a neutral line between a neutral supply connecting terminal and a neutral load connecting terminal configured to connect an alternating current load to a mains supply;
• a first galvanic separation switch and a bypass switch in the live line;
• a second galvanic separation switch in the neutral line;
• a semiconductor switch element connected parallel to the bypass switch;
• a processing unit configured to control the first and second galvanic separation switches, the bypass switch, and the semiconductor switch element;
• a short circuit and overcurrent detection unit connected to the processing unit for determining a short circuit situation or overcurrent situation;
• and
• a fault current detection and injection unit connected to the processing unit, configured to determine a fault current situation, the fault current detection and injection unit being in galvanic separation to the live line and neutral line,
• wherein the processing unit is further configured to trip the alternating current circuit breaker by opening the bypass switch and semiconductor switch element after determination of a short circuit or overcurrent situation,
• wherein the processing unit is further configured to execute a reclosing attempt after a predetermined time period after tripping of the alternating current circuit breaker,
• wherein the predetermined time period is dependent on a situation causing the tripping of the circuit breaker, and
• wherein the processing unit is further configured to trip the alternating current circuit breaker after determination of a fault current situation.

An alternating current circuit breaker, comprising:

• a live line between a live supply connecting terminal and a live load connecting terminal;
• a neutral line between a neutral supply connecting terminal and a neutral load connecting terminal configured to connect an alternating current load to a mains supply;
• a first galvanic separation switch and a bypass switch in the live line;
• a second galvanic separation switch in the neutral line;
• a semiconductor switch element connected parallel to the bypass switch;
• a processing unit configured to control the first and second galvanic separation switches, the bypass switch, and the semiconductor switch element;
• a short circuit and overcurrent detection unit connected to the processing unit for determining a short circuit situation or overcurrent situation;
• and
• a communication interface connected to the processing unit,
• wherein the processing unit is further configured to trip the alternating current circuit breaker by opening the bypass switch and semiconductor switch element after determination of a short circuit or overcurrent situation,
• wherein the processing unit is further configured to execute a reclosing attempt after a predetermined time period after tripping of the alternating current circuit breaker,
• wherein the predetermined time period is dependent on a situation causing the tripping of the circuit breaker, and
• wherein the processing unit is configured to execute a reclosing attempt based on instructions received via the communication interface.