Contact system for automatic circuit breakers, especially low voltage circuit breakers
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Pneumatic drive device for auxiliary contacts in switches, e.g. for electrical high voltage systems
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DC converter based on the compensation principle
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Process for preparing the coils of electrical equipment for impregnation with low pressure resins without the use of molds
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Device for single actuation of several electrical devices by compressed air with a pulse valve that releases the compressed air line for the actuation time
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Improvements in or relating to electric power fuses
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Multi-polar change-over switches or disconnecting switches for electric switch gear
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Improvements in or relating to withdrawably mounted electrical circuit breaking devices
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Over dead center drive mechanism with auxiliary contacts for disconnector or changeover switch
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Improvements in and relating to electric disconnecting switches
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Arc-extinguishing device for liquid electric circuit breakers
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Arc extinguishing chambers for electrical switches and methods of producing such chambers
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Thermal and electromagnetic overcurrent release with current transformer enclosed in an insulating body
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Extinguishing device for electric boiler oil switches
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Control valve for the optional connection of a central inlet with one of two outlets arranged on either side of the inlet
