A combined multi-pole line protection circuit breaker and residual current device

摘要

A combined multi-pole line protection circuit breaker and residual current device (2) consisting of single-pole or multi-pole line protection circuit breakers (1) in whose circuit the summing current transformer of the residual current device (2) is connected, via connecting lines (7), whose latching mechanism is connected via a coupling in this operating direction to that or those of the line protection circuit breakers, in that the line protection circuit breakers (1) are coupled in both operating directions. It is provided according to the invention that the residual current device (2) - apart from a test button (5) - has only one switching-on means (6). <IMAGE>