DC Circuit breaker

Dead tank circuit breaker

Dead tank gas-insulated puffer-type circuit interrupter having i

Dead tank housing for high voltage circuit breaker employing puf

Dead tank type gas circuit breaker

Deadman's switch

Device for monitoring the fitting in position of detachable elem

Device for quenching an electric arc

Device for separably assembling two enclosures of a cut-out appa

Device for switching in a resistance when a circuit breaker clos

Device for switching in closing resistors for high-voltage cut-o

Device with arc-extinguishing system

Diaphragm keyboard

Dielectric barrier for a vacuum interrupter

Dielectric blast gas high voltage circuit breaker with electrica

Dielectric fluids and apparatus incorporating such fluids

Dielectric gas high-tension circuit-breaker having a closure res

DIP switch assembly having side extending leads

Direct current switching apparatus

Disconnect switch