| 摘要 |
A rating plug may conventionally be provided with an electrical coding such that unsuitable identification of the rating plug is not transmitted to the trigger unit, but rather the attempt to make use of such a rating plug leads to a signal. According to the invention, the signalling unit may be arranged on the housing of the low-voltage power breaker (1), or on the trigger unit (5). Thus, in addition to the conventional solution, the states wrong rating plug, wrong contact connection and defective rating plug may be recorded.
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