Description
14 9229 9923 176 0B
2013-09-09
Pole assembly The pole assembly of the 3AK vacuum circuit-breaker module consists of
• the upper interrupter support (20.),
• with the upper terminal (27.) and the break contact (21.),
• the vacuum interrupter (30.),
• the lower interrupter support (40.) with the lower terminal (29.) and the break
contact (21.).
Each of the 3 pole assemblies is supported by the pole columns (23.), which are
screwed to the pole plate (15.).
Contact system in the vacuum interrupters
A slight change in the contact stroke that occurs over the entire useful life of the vac-
uum interrupter has no effect on its function. There is no need for a status indicator
for the contact system.
Fig. 8 Pole side
15. Pole plate 48. Insulating operating rod
20. Upper interrupter support 68.7 Automatically coupling low-voltage plug
21. Break contact 80. Withdrawable part
23. Pole column 84. Mounting rail
26. Earth terminal 87. Coding
27. Upper terminal 90. Cartridge insert
29. Lower terminal 93. Locking pin
30. Interrupter 109. Coupling of the earthing switch drive
40. Lower interrupter support
To Next Page
Loading...
