Siemens vacuum circuit breaker 38-3AH3 38 kV - Manual (Page 14)

Vacuum interrupter/
operator
Figure 8: Front view of type 38-3AH3 vacuum circuit breaker with front panel removed
CHARGED/
DISCHARGED
indicator
OPEN/CLOSED
indicator
Operations
counter
Capacitor trip
(optional)
Jack shaft Closed circuit-
breaker interlock
Spring-charging
motor behind
limit switches
Trip-free interlock Ground disconnect
Auxiliary
switch
Close coil
Trip coil
Push-to-trip
Mechanism-
operated cell
(MOC) switch
operator
Secondary disconnect
Push-to-close
Closing spring
Opening spring Gearbox
14