SPRING LOADED AUXILIARY CONTACT SYSTEM FOR BUS TRANSFER SWITCHING IN A CENTER BREAK SWITCH

摘要

The invention relates to a center break switch having a contact system for electrical current conduction and bus transfer switching. The contact system comprises two moving contacts. One of the two moving contacts comprises a finger contact and the other moving contact comprises a fist contact. Each moving contact comprises a contact for bus transfer switching, wherein one of the two contacts comprises a spherical contacting element, and the other contact comprises a rectangular contacting element. The spherical contacting element and the rectangular contacting element engage during switching for the bus transfer, and stay in contact when the finger contact is engaged with the fist contact for electrical current conduction.