Sliding bar with Bowden cable: Modules for sliding bar with Bowden cable
A mutual interlock between up to three molded case circuit breakers can be implemented by means of the front Bowden cable interlock. This interlock functions according to the blocking principle: If one of the circuit breakers included in the interlock is unlocked, the Bowden cables move in such a way as to ensure that the other molded case circuit breakers are locked in the OFF (O) position.
In order to implement a front Bowden cable interlock, sliding bar modules must be mounted on the 3VA molded case circuit breakers to be included in the interlock arrangement. Each of these modules is equipped with a slide which blocks or releases operation of the handle.
A Bowden cable must be installed in addition to the sliding bar modules. This cable prevents the slides from releasing more than one molded case circuit breaker at any one time. As a result, only one 3VA molded case circuit breaker at a time can be operated and only one molded case circuit breaker can be in the ON (I) position.
Bowden cable lengths
The following lengths of Bowden cable can be ordered:
Interlocks can be implemented between the following 3VA molded case circuit breakers:
Possible combinations of handle positions
When a sliding bar with Bowden cable is installed to interlock two 3VA molded case circuit breakers, the following combinations of handle position are possible:
When a sliding bar with Bowden cable is installed to interlock three 3VA molded case circuit breakers, the following combinations of handle position are possible:
Installation of other accessories
When the front Bowden cable interlock module is fitted, some other accessories cannot be installed, see chapter Possible combinations of of accessories.