Accessories
4.7 Locking and interlocking
3VA molded case circuit breakers with IEC certificate
374 Manual, 03/2019, A5E03603177010-03
Installation of other accessories
When the cylinder lock is fitted in the accessory compartment of the circuit breaker, some
other accessories cannot be installed, see chapter Possible combinations of of accessories
(Page 186).
Manual operators (Page 309)
Draw-out technology (Page 285)
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 module. 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. These
modules are equipped with a handle blocking device to block or release operation of the
handle.
Sliding bar module
Slide
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