24
VM1 - INSTRUCTION MANUAL BA 504/05 E
Figure 9/9: Vacuum circuit breaker, type VM1, on withdrawable part, 12 kV, 630 A,
≤31.5kA,poleside(useinZS8.4only)
33 Breaker pole
34 Contact arm with insulating tube
(versions for rated currents to 1250 A and above have
shrink sleeves)
34.1 Contact system
Figure 9/11: Circuit breaker front with controls and annunciations
1 Mechanism enclosure
1.1 Front plate
1.2 Bore for handling, both sides
2 ”READY” lamp
3 ON push-button
4 OFF push-button
5 Mechanical operating cycle counter
6 Mechanical position indicator
7 Rating plate
8 Socket for emergency manual operation lever
Figure 9/10: Withdrawable part with built-in auxiliary switch
-BT2 Test position indicator
-BT1 Service position indicator
35.1 Spindle mechanism
35.2 Square spigot
35.5 Pawl
35.6 Scene head on spindle
37 Control wiring plug connector for withdrawable
assembly
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9. Figures
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