Siemens SENTRON 3WL10 Series Manual page 95

Protective covers to prevent unintended mechanical operation
With this protective device, the circuit breaker can be protected from unintended operation.
It is mounted on the safety cover of the circuit breaker.
The pushbutton protection device prevents operation of the OFF and ON button unless the
special key is used.
These protective covers cannot be combined with the locking devices for padlocking.
Locking device, OFF position, Ronis lock
They are locked by a Ronis cylinder lock, which is installed in the operator panel. With this,
the circuit breaker can be locked in the OPEN position. The cover of the accessories
compartment can be removed when locked to enable maintenance work in this area.
If multiple circuit breakers are locked with cylinder locks, this can be implemented in two
versions depending on the lock numbers chosen:
● Locks with different lock numbers: Each lockable circuit breaker has its own key.
The lock number can be selected from a choice of four different lock numbers.
● Locks with the same lock numbers: Every key fits in every lockable circuit breaker.
The protection device with a key prevents access to the OFF button and the ON button
simultaneously. It is not possible to push both buttons. Access is only possible with the
relevant key.
This locking device fulfills the conditions for a supply disconnecting (isolating) device
according to EN 60204-1.
A Ronis cylinder lock is included in the scope of delivery.
Padlockable protective cover ON / OFF
With this version, one or both buttons can optionally be protected from being operated.
If only one button is protected, the other button can be operated.
● Locking device made of plastic for up to three padlocks with a diameter of 4 mm (0.16")
● Locking device made of metal for one padlock with a diameter of 7 mm (0.28") or for
a padlock holder
● Locking device made of metal for up to 2 padlocks with a diameter of 8 mm (0.32")
Air circuit breaker 3WL10
Manual, 11/2017, L1V30499596002-01
Accessories
3.4 External accessories
93