FIELD: electrical engineering; electrical equipment short-circuit and overload protection.
SUBSTANCE: proposed device has contacts, arc-control chamber, parallel magnetic blowout coil, off-line power supply, and current sensor. Device is also provided with series magnetic blowout coil connected in series with contacts, electronic switch being inserted between current sensor and off-line power supply that functions to feed parallel magnetic blowout coil when circuit carries current below rated value and to deenergize this coil when circuit carries current equal to or higher than rated current of device.
EFFECT: enhanced reliability of arc suppression between contacts during device disconnection.
1 cl, 1 dwg
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