BIMETAL FUSE Russian patent published in 2023 - IPC H01H37/54 

FIELD: electrical engineering.

SUBSTANCE: safety devices used in the design and manufacture of electrical circuit protection devices based on bimetallic fuses. The bimetallic fuse consists of a sensitive element in the form of a convex clicking blade with a U-shaped ledge and a U-shaped tumbler located inside the blade, mounted on one of two electrical terminals, with a movable contact on the U-shaped ledge. The sensing element is a figure described around an isosceles triangle inscribed in the base circle with a base smaller than the sides, and the sides of the figure are parts of the circles. Moreover, the lateral sides of the figure are formed by parts of circles described from the intersection points of the medians of the lateral sides of an isosceles triangle with the base circle, and the base of the figure can be a part of the base circle enclosed between the lateral sides.

EFFECT: expanding the range of variation of operating parameters.

2 cl, 4 dwg