FIELD: electrical engineering, in particular, electric welding. SUBSTANCE: device has housing with resistive element which is designed as bent ribbon which is mounted on its face plane. In addition device has current leads. Resistive element has sections in which ribbons are bent as flat helices, which are connected to current leads. Said sections are arranged in vertical direction, so that poles of spirals belong to common axis and their turns are projected to single image in order to provide vertical helix channel in projection. EFFECT: simplified design, increased reliability, decreased weight and size. 9 cl, 6 dwg
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