VACUUM SWITCH Russian patent published in 1995 - IPC

FIELD: low-voltage and high-voltage circuit-opening devices. SUBSTANCE: switch has insulating case 10, at least one arc-control chamber 1 linked through movable current lead 2, hold-down mechanism, and insulating lever 13 with armature 7 of electromagnet 4, and disconnecting spring 8. Space between arc-control vacuum chambers 1 and electromagnet 4 is separated by insulating barrier 21 fixed with case 10; each lever 13 is hinged on pin 6 mounted in case 10. EFFECT: provision for isolating heavy-current part of switch from low-current part, dispensing with full disassembly of switch for replacing arc-control chamber, eliminated seizure between flexible links and insulating levers, simplified shape of insulating levers. 1 dwg