FIELD: protection means.
SUBSTANCE: device casing accommodates an inductor with an axial bore and electrical terminals, a permanent magnet rod, a retainer with reciprocating travel drive, its lower end part facing the inductor axial bore. The retainer is made from a memorised shape material and is fixed the rod upper end part. The device frame is connected with the casing lower part and made from an insulating material. It also has a central channel aligned with the inductor axial bore. The frame accommodates a jumper made from a current-conducting material with its end parts connected with the inductor terminals. The inductor axial bore, between the jumper and the rod lower end part, accommodates a punch made from a nonmagnetic nonconducting material moving lengthwise.
EFFECT: wider range of application and higher efficiency.
6 cl, 4 dwg
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