Power schwitchgear device.

摘要

A power switchgear device comprising: a fixed contact-maker (13) having a stationary contact (13a); a movable contact (11a) arranged opposite to the stationary contact (13a) carried by a movable contact-maker (11), an arc runner (13b) electrically connected to the fixed contact-maker (13); a commutation electrode (22) arranged for taking current during disconnection, and a deionisation grid (21), wherein said movable contact (11a), said arc runner (13b) and said commutation electrode (22) are arranged such that the shortest distance (X0) between said arc runner (13b) and the side of said movable contact-maker (11) remote from a side carrying said movable contact (11a) becomes greater than the shortest distance (Y) between said commutation electrode (22) and said arc runner (13b) when said contacts are moved apart, characterised in that said deionisation grid (21) is arranged between said commutation electrode (22) and a part of said arc runner (13b).