FIELD: electricity.
SUBSTANCE: invention refers to devices for electric arc extinguishing at interruption both of short-circuit currents, and low currents with commutation device, and is intended for being used in arc extinguishing devices of current-restricting and quick-operating switches. Magnetic blow device includes a set of magnetic conductors with coils, movable and fixed contacts. Each next magnetic conductor of the set is located above the previous one; at that, each next magnetic conductor of the set is offset relative to movable contact in horizontal plane by shorter distance to this contact in comparison to previous magnetic conductor of the set. Coils of magnetic conductors are in-series connected to contacts.
EFFECT: eliminating deceleration of travelling speed of electric arc in arc extinguishing device, and its extinguishing efficiency.
3 dwg
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