Electrical circuit breaker with self-expansion and rotating arc

Electrical circuit breaker with self-extinguishing expansion and

Electrical circuit breaker with two vacuum cartridges in series

Electrical circuit breaking device and method

Electrical circuit interrupting devices

Electrical compression switch with contact movement assistor

Electrical contact assembly for a current interrupting unit

Electrical contact construction

Electrical contact construction for air-blast circuit breakers

Electrical contact for use in a current interrupting unit

Electrical contact making arrangement for monitoring the conditi

Electrical contact member having low electrical resistance

Electrical contact positioning assembly

Electrical contact structure of a vacuum interrupter

Electrical contactor employing a rotary disc

Electrical contacts for vacuum interrupter devices

Electrical control

Electrical control device for high and low voltage installations

Electrical devices

Electrical gas-blast circuit breaker and method of manufacture