A switching device 1 for fast disconnection of short-circuit currents comprises a switching bridge 10 having a fixed and movable contact 40,45, an electromagnetic switch drive 100 having a coil 20 and a magnet anchor or plunger 15, a guide sleeve 30 to guide the movement of the anchor, and a pyrotechnic propellant charge 60 located in a cavity 33 formed below the anchor. The anchor is coupled to the bridge such that movement of the anchor causes movement of the bridge. When the pyrotechnic charge is ignited within the cavity, the anchor is moved from a first position to a second position within the guide sleeve to operate the bridge into an open state. A gap 37 may be formed between the guide sleeve and a supporting device 35. The guide sleeve may comprise at least one opening 31 through which gases produced during ignition of the pyrotechnic charge flows into the gap. The at least one opening may be an annular hole arrangement in a wall 34 of the guide sleeve. The gap may comprise an outlet 38 for the outflow of gases, which may be directed through the space between contact members 41,46 of the fixed and movable contact to cool an arc.
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