SWITCHING DEVICE Russian patent published in 2016 - IPC H01H9/36 

FIELD: electrical engineering.

SUBSTANCE: invention relates to low-voltage switching device (1) containing multiple arc-quenching chambers (10). Each of said arc-quenching chambers (10) covers unit (60) of contacts closure, comprising fixed contact (30, 30′) and movable contact (20), and arches are formed when movable contact is detached from fixed contact. Each arc-quenching chamber comprises multiple U-shaped arc-quenching plates (40), adapted for arc separation, direction and cooling, formed between contacts (30, 30′, 20), and side walls (12), containing guide device (14) for directing branches (42) of arc-quenching plates. Guide device (14) contains multiple supporting plates (16), arranged to extend to inner part of arc-quenching chamber for receiving branches (42) of arc-quenching plates and to ensure electrical insulation between two adjacent arc-quenching plates (40).

EFFECT: technical result is creation of low-voltage switching device, made with possibility to direct arc-quenching plates in arc-extinguishing chamber with prevention of damage of branches of arc-quenching plates, caused by arcs.

3 cl, 3 dwg