| 摘要 |
A low-voltage power circuit breaker includes an electronic overcurrent release, which draws its operating energy from the power supply system monitored by the low-voltage power circuit breaker, and an operating-state detection device. Since it is possible for the power circuit breaker to switch to a short circuit on connection, it may be appropriate for no undelayed tripping of the power circuit breaker to be permitted directly after connection, or for the tripping time for the delayed tripping to be altered. Provision is made for the operating-state detection device to be a device for detecting a connection operation, whose output signal is fed to the overcurrent release, which sets a different disconnection time for the low-voltage power circuit breaker at the beginning of a connection operation for a predetermined period of time.
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