Device for adjusting the thermal current of a thermal bimetallic

Details Device for adjusting the thermal current of a thermal bimetallic Device for adjusting the thermal current of a thermal bimetallic

1987-08-14

1988-08-09

Broome, H.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

With bimetallic elements

335 42, 335 45, H01H 7116

Patent

active

047630965

ABSTRACT:
A device is provided for adjusting the thermal current of a bimetallic strip thermal tripping device and a protection switch including such a device, said adjustment device including a graduated wheel accessible from outside the switch box and having inner toothing; a flange centered on the wheel, with a member meshing with the toothing of the wheel, and formed with an excentric groove; a tumbler rotated through a finger engaged in the groove of the flange; a hook mounted for pivoting about a pin fixed with respect to the case; and a lever mounted for pivoting by means of a pin on the hook and connected to the tumbler by a stud, the lever being positionable with respect to the bimetallic strip at a given distance depending on the value of the thermal tripping current.

REFERENCES:
patent: 4023132 (1977-05-01), Kidd et al.

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