knife switch

基本解释

Furthermore, The protective lid features bipolar knife switch which resolves safety issues when the lid is open.
此外，当盖子是打开的时候，给予保护的盖子内有两极的闸刀来解决电流的安全流通。
Produces including lampholders porcelain lampholder fuse box insulator knife switch adapter block porcelain socket porcelain etc.
电瓷件、瓷灯头、瓷灯座、座熔断器、绝缘子、闸刀开关、瓷接器、瓷插座等各式灯座。
A knife switch with iron shell shall be installed in the power supply line, which is exclusively for this oven, and the outer plate shall be grounded.
应在供电线路中安装铁壳闸刀开关一只，供此箱专用，并将外壳接地。

an electric switch in which a flat metal blade, hinged at one end, is pushed between fixed contacts