Siemens SENTRON 3WL10 - Armature Plates

Insulating measure Article No. contained in
E 3VW9723-0WF30
3VW9724-0WF40
3VW9011-0AL71
3VW9011-0AL72
F  3VW9011-0AL71
3VW9011-0AL72
3VW9011-0AL73
3VW9011-0AL74
3VW9011-0AL77
3VW9011-0AL78
Busbar isolation
Note
The distance speci󹪝cations for busbar isolation apply to the 3VA27 molded case circuit breaker.
 3VA27 A
$$
≤ 415 VAC 250 mm
[9.84 in]
> 415 VAC 400 mm
[15.75 in]
4.2.3 Armature plates
The electrodynamic forces that arise during a short-circuit can result in high mechanical loads in
and on the switchboard. To minimize the e󹪜ects, armature plates must be mounted in the
vicinity of the terminals of the circuit breaker.
Busbars
The following diagram shows the distance of the 󹪝rst armature plate depending on the
prospective short-circuit current when busbars are used:
Application planning
4.2Power supply, grounding, and connection
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
Equipment Manual, 10/2023, L1V30499596002-03 149