HEAVY-CURRENT DISCONNECTING SWITCH Russian patent published in 2007 - IPC H01H31/24 

FIELD: indoor disconnecting switches.

SUBSTANCE: proposed heavy-current disconnecting switch has rectangular frame that mounts electric insulators. Disposed on the latter are two core-mounted coaxial current-carrying contacts which are insulated from one another and from disconnecting switch. Current-carrying contacts have similar number of contact members symmetrically disposed over circumference. Ends of contact members facing each other are separated by disconnecting-switch discharge gap. This discharge gap is electrically shorted out in ON-position of switch by spring-loaded sections longitudinally disposed on core over circumference. Sections and contact members are made of pins. Ends of contact members free from working contacts are overhanging from current-carrying contact leads. Limiting stops are installed for opposite ends of contact members to prevent their crosswise movement from longitudinal axis of disconnecting switch; segments are installed for crosswise movement toward longitudinal axis of disconnecting switch.

EFFECT: minimized inherent power loss as well as mass and size of heavy-current disconnecting switch.

13 cl, 9 dwg