A multipolar electrical switch with magnetic action, especially a air relevant. (Machine-translation by Google Translate, not legally binding)
GB1118937A
An electric switch
GB1118933A
A multipole electromagnetically-operable switch
US3374331A
Electrical coupling in which making and breaking of conductors is within casing filled with an insulating medium
GB810847A
Improvements in or relating to electrical switch means for direct or alternating current
US2861153A
Quick-action switch device
GB734174A
Improvements in busbar systems in electrical switch gear units
GB721972A
Improvements in or relating to electric switch gear
GB704147A
Improvements in or relating to methods of arc extinguishing in switches by means of an extinguishing stream controlled by switch movements and apparatus for carrying outsuch methods