Siemens SENTRON 3VL System Manual page 134

Displays and operator controls
9.3 Stored-energy motorized operating mechanism
Status
Stored-energy motorized operating
mechanism
Automatic (remote)/manual (local)
changeover switch
Locking slide with padlock
Mechanical locking with safety lock
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Operation
Only remote operation is possible in
Auto mode. The local operating
controls are deactivated. The manual
clamping handle works when the
operating mechanism is in the
"ON/Discharged" position. Only local
operation is possible in manual
mode. Remote signals are blocked.
The "ON" button operates
mechanically and releases the
stored-energy spring mechanism.
The "OFF" button operates the motor
that charges the stored-energy spring
mechanism. Using a mechanical
locking device, the "OFF" button can
be configured such that the
SENTRON VL will trip when the
button is pressed. This makes it
possible to immediately trip the circuit
breaker. When this occurs, the toggle
handle initially goes to the "tripped"
position, and then the motor
movement takes it to the
"OFF/RESET" position.
The auto/manual changeover switch
must be set to manual mode to be
able to locally lock the circuit breaker
in the "OFF" position. Between 1 and
3 padlocks with shackle diameters
ranging between 4 and 8 mm can be
accommodated on the locking slide.
The operating mechanism cover
cannot be removed.
Compatible with locking using the
safety lock feature.
The auto/manual changeover switch
must be set to manual mode to be
able to locally lock the circuit breaker
in the "OFF" position. The locking
device with safety key prevents local
and remote operation. The key can
only be removed in the locked switch
position ("OFF"). The locking slide
protrudes out of the operating
mechanism cover to indicate that the
operating mechanism is locked. The
operating mechanism cover cannot
be removed when it is locked.
Compatible with the padlock feature.
Display
Local/remote changeover switch
Locking slide with padlock (enlarged)
Mechanical locking with safety lock
3VL molded-case circuit breakers
System Manual, 03/2009, 110 0110 - 02 DS 01