FIELD: electrical engineering.
SUBSTANCE: invention relates to electrical engineering. An auxiliary shunt component including the first and second shunt elements is added to the structure of the interrupting unit. The first shunt element is connected to the first electromotive force compensator; the second shunt element is connected to the second electromotive force compensator; when the movable contact component contacts the fixed contact of the first or second power supply, the movable contact component contacts the first or second shunt element, respectively, and the current flowing through the first shunt element is greater than the current flowing through the soft piece of wire.
EFFECT: improving the working characteristics of the movable contact by reducing the cross-sectional area of the soft piece of wire on the tail of the movable contact.
14 cl, 8 dwg
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