Siemens SENTRON 3VL series - Locking Device with a Safety Lock; Mutual Interlocking of Two Molded Case Circuit Breakers

Installing/mounting
6.3 Locking devices
3VL IEC molded case circuit breakers
86 System Manual, 11/2013, 110 0110 - 02 DS 03
6.3.2
Locking device with a safety lock
Safety lock for the rotary operating mechanism and the motorized operating mechanism
A safety lock can be used for both rotary operating mechanisms and motorized operating
mechanisms with stored energy mechanism (SEO).
The safety lock is used to lock the molded case circuit breaker in the "OFF" position. The key
can only be removed when the molded case circuit breaker is in the "OFF" position. The key
cannot be removed when the rotary operating mechanism or the motorized operating
mechanism is in the "ON" position.
Front
-operated rotary operating mechanism
with optional locking device
Motorized operating mechanism with stored
energy mechanism (SEO) for
VL160X to VL800 with optional
locking device
6.3.3
Mutual interlocking of two molded case circuit breakers
Mutual interlocking of two molded case circuit breakers (Bowden wire) in the fixed-mounted, plug-in
and withdrawable versions
Possible interlocking
With toggle lever
With rotary operating mechanism / door
coupling rotary operating
mechanism
Two 3VL molded case circuit breakers can be mutually mechanically interlocked using a
Bowden wire and the locking modules.