Switchgear combination of pyrotechnic switch and fuse

The article presents the combination of a low-voltage fuse with a pyrotechnic switch in a compact design. Different circuit concepts will be discussed, and their scope of application demonstrated with the aid of simulations and experiments based on two sample arrangements. Besides having a passive over-current protective characteristic, both arrangements allow active triggering and fast disconnection. The protective behaviour of both variants from the over-current to the short-circuit range is described for purely passive behaviour and especially for active triggering.


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