– Fasten the guide frame to the rear wall of the switchboard panel with 4 screws (included
in the scope of delivery) with a tightening torque of 21Nm.
① Insulating plate for extended front terminals, to be provided by the customer
2. Ensure that the guide frame is grounded (see Chapter Power supply, grounding, and
connection (Page142)).
3. Screw the busbars/cables of the main conducting paths to the connections of the
withdrawable breaker version (for tightening torques, see table Tightening torques at a
glance (Page154)).
Note the operating instructions of the relevant connection system (see Chapter Reference
documents (Page10)).
4. Mount the armature plates for protection from short-circuits (see Chapter Armature plates
(Page149)).
5. Insert the circuit breaker into the guide frame (see Chapter Racking the circuit breaker
(withdrawable breaker) (Page188)).
Connection and commissioning
5.2Mounting and connecting the device
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
166 Equipment Manual, 10/2023, L1V30499596002-03
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