Spring operating devices for high-voltage circuit-breakers

Spring operating mechanism for an electrical switch

Spring-drive mechanism for electric switches

Spring-force drive for a power switch

Spring-type operating mechanism for a circuit interrupter

Stab connector for enclosed electric bus apparatus

Staged opening switch

Stainless-steel interrupter-head construction for circuit-interr

Stationary contact assembly for a current limiting circuit break

Stationary contact structure for high voltage gas blast circuit

Stationary-contact-and voltage-shield assembly for a gas-puffer-

Steel arcing contact for circuit breaker

Stored energy circuit breaker

Stored-energy operating device for an electric circuit breaker

Stored-energy operating means for an electric circuit breaker

Strand actuator for pushbutton switch

Structurally improved rod array vacuum interrupter

Studded mounting structure for switch

Suicide switch/interrupter with variable volume chamber and puff

Sulfur hexafluoride circuit breaker operating in a very low temp