| 摘要 |
In a fault current circuit breaker (1) having mains voltage-independent fault current breaking, comprising at least one total current converter (2), through which at least one first conductor (3) and a second conductor (4) of a network to be protected are run, wherein on the total current converter (2) at least one secondary winding (5) is disposed, the secondary winding (5) in terms of the circuit design being connected to a breaker (6), which is operatively connected via a switch latch (20) to break contacts (7) in the at least one first conductor (3) and the at least one second conductor (4), wherein on the total current converter (T) furthermore a tertiary winding (8) is disposed, which in terms of the circuit design is connected to at least one voltage-dependent resistor (9), it is proposed in order to use a test resistor (12) having a small size, while foregoing a switch contact in the test current circuit (10), to configure the tertiary winding (8) as part of the test current circuit (10), comprising a test sensor (11) and a test resistor (12).
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