ClipArt ETC
Fuse protection for voltmeter and ground detector on a direct-current switchboard. Fuse protection on instrument circuit of an alternating-current switch-board.

Fuse protection

Fuse protection for voltmeter and ground detector on a direct-current switchboard. Fuse protection on…

A two pole front connected knife switch fused at the handle end.

knife switch

A two pole front connected knife switch fused at the handle end.

A three pole rear connected knife switch fused on the hinge end.

knife switch

A three pole rear connected knife switch fused on the hinge end.

Showing the construction of a quick break knife switch.

knife switch

Showing the construction of a quick break knife switch.