Patent ID: 6337613
Filing Date: 2002-01-08
Classification: H01H

Abstract:
A three-phase electrical switchgear apparatus comprising a case made of insulating material comprising at least six pole compartments arranged side by side, each phase comprising:two adjacent poles, each pole comprising one of said pole compartments and a pair of separable contact means formed by a first and a second contact means; a first bridge connection electrically connecting the first contact means of the two adjacent poles of said phase; a second bridge connection electrically connecting the second contact means of the two adjacent poles of said phase; one of the three phases constituting a center phase bounded on each side by the other two phases which each form a side phase, one of the two poles of each side phase forming an inner pole whose pole compartment is adjacent to one of the pole compartments of the center phase,wherein:each of said inner pole compartments of the side phases comprises a magnetic compensation circuit arranged between one of the two bridge connections of said phase and the pair of contact means of said inner pole compartment, the other two pole compartments of the two side phases are not provided with magnetic compensation circuits.