Accessories
3.5 External accessories
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
Manual, 10/2018, L1V30499596002-01
121
3.5.4
Locking and interlocking
Covers and locking devices to prevent mechanical operations at the operator panel
①
Protective covers to prevent unintended mechanical operation
②
Locking device, OFF position, Ronis lock
③
Padlockable protective cover ON/OF
④
Locking device, OFF position, for padlocking
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.
This protective cover cannot be combined with the locking device for padlocking.