HIGH-VOLTAGE THREE-POLE VACUUM SWITCH Russian patent published in 1995 - IPC

FIELD: electric devices. SUBSTANCE: device has control levers 1-3 having movable contacts of pole chambers 4-6. Two levers 2 and 3 are rigidly attached to common shaft 7, while third lever 1 is rigidly attached to introduced shaft 8 which is shaped as hole cylinder which covers part of common shaft 7. Shaft 8 is mounted for rotation around common shaft. In addition, shaft 8 has engaging unit having bulge 9 which engages with locking unit 10 which fixes two poles 5 and 6 in closed position. Levers 2 and 3 for control of poles 5 and 6 are attached to common shaft 7. EFFECT: increased functional capabilities. 1 dwg