3. Wire the accessories to the terminals for auxiliary supply connection as required.
All commands and signals for interaction with the circuit breaker pass through the auxiliary
conductor terminal system and the auxiliary conductor terminals it contains or the CB Bus
Module that is plugged in. The internal wiring to the corresponding pins is available on every
circuit breaker. By studying the labeling shown below, the user will nd the relevant pin
assignment for the external wiring of the user's accessories to the corresponding auxiliary
conductor terminals. These are implemented with a screwless push-in method and are pre-
installed in the factory when internal accessories are congured.
For the precise wiring of each accessory item, see the circuit diagrams (see Chapter Circuit
diagrams (Page231)).
Overview of auxiliary conductor connections version 3WL10 / 3VA27 - xed-mounted
circuit breaker
On left: Breaker with handle operating mechanism
On right: Breaker with stored energy mechanism
Connection and commissioning
5.3Mounting accessories
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
170 Equipment Manual, 10/2023, L1V30499596002-03
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