2525
Figure 9/12: Sectional view of a vacuum circuit breaker type VM1,
schematic diagram
1 Mechanism enclosure
1.1 Front plate, removable
9 Emergency manual opening mechanism
10 Magnetic actuator
11 OFF coil
12 Magnet armature
13 Permanent magnets
14 ON coil
15 Sensor -B0A for ”circuit breaker OFF” signal
16 Sensor -B0E for ”circuit breaker ON” signal
17 Travel adjuster
18 Lever shaft
19 Insulated link rod
20 Contact force spring
21 Flexible connector
22 Lower breaker terminal
23 Cast insulation
24 Vacuum interrupter
24.1 Moving contact
24.2 Fixed contact
25 Upper breaker terminal
Figure 9/13: Position indicator
6 Mechanical position indicator
15 Sensor -B0A for ”circuit breaker OFF” signal
16 Sensor -B0E for ”circuit breaker ON” signal
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