Siemens SENTRON 3VL160X System Manual page 87

Use of this accessory kit means only one of the molded case circuit breakers is in the "ON"
position at any time.
Fixed-mounted and plug-in molded case circuit breakers use different interlocking modules.
However, these are compatible with each other. This enables both to be used in interlock
circuits.
Two molded case circuit breakers can be mounted side by side or one above the other. The
distance between the two molded case circuit breakers depends on the length of the
Bowden wire and its minimum bending radius. The cable comes in lengths of 0.5, 1.0 and
1.5 m. The minimum bending radius for each cable is 60 mm. The length of the Bowden wire
must not be altered by the customer. The Bowden wire has a mechanical endurance of
10,000 operations. Each Bowden wire must be ordered separately.
The combination options of the molded case circuit breakers with Bowden wire interlocking is
described in Table 12-1 of Chapter 12.6.
Note
Not possible in combination with the motorized operating mechanism.
Mutual interlocking (rear interlocking module) of two molded case circuit breakers in the fixed-
mounted, plug-in and withdrawable versions
Fixed-mounted version
Fixed-mounted version
The rear interlocking module enables mutual mechanical interlocking of two 3VL molded
case circuit breakers of the same size. The rear interlocking module is attached behind the
molded case circuit breakers to the mounting plate supplied by the customer.
3VL IEC molded case circuit breakers
System Manual, 11/2013, 110 0110 - 02 DS 03
(lock at rear)
(lock at front)
Plug-in version
(lock at rear)
Plug-in version
(lock at front)
Installing/mounting
6.3 Locking devices
87