OVERCURRENT CIRCUIT-BREAKER, ESPECIALLY A GENERATOR POWER CIRCUIT-BREAKER

摘要

The invention relates to an overcurrent circuit-breaker, especially a generator power circuit-breaker, comprising a three-pole interrupter unit which switches the nominal current and the short-circuit current. Each of three-pole interrupter units are equipped with a separate actuating device. The three-pole interrupter unit (DUE) is formed by at least one power-circuit breaker of the first type (LSN) which carries the nominal current, and by a power-circuit breaker of the second type (LSK) which switches the short-circuit current and the nominal current. The power-circuit breakers of the first type (LSN) and the power-circuit breaker of the second type (LSK) comprise a common actuating device (ATE) having a rigid coupling. In addition, the power-circuit breakers of the first type (LSN) and the power-circuit breaker of the second type (LSK) have a different or identical contact travel (KH). Such overcurrent circuit-breakers can be used in the area of power supply technology.