Use of a fusion material of copper and chrome as the contact mat
User interface control apparatus
Vacuum actuated switch
Vacuum arc current limiter with oscillating transverse magnetic
Vacuum arc switching device with internal shielding
Vacuum breaker
Vacuum bulb provided with electrical insulation
Vacuum circuit breaker
Vacuum circuit breaker
Vacuum circuit breaker
Vacuum circuit breaker
Vacuum circuit breaker
Vacuum circuit breaker
Vacuum circuit breaker
Vacuum circuit breaker
Vacuum circuit breaker
Vacuum circuit breaker
Vacuum circuit breaker
Vacuum circuit breaker
Vacuum circuit breaker comprising series connected vacuum interr