| 摘要 |
An installation switching device includes a cutout, which is designed on a fastening side, for fastening the installation switching device to a mounting rail, a vent opening, which is disposed on the fastening side, for discharging waste gases from an arc-quenching device, and a quick fastening device which is disposed on the fastening side. The quick fastening device includes a slide, which carries a movable projection and encloses the housing at the broad sides and which can be acted on by means of a spring toward the inner space of the recess. |
