Connection and commissioning
5.3 Mounting accessories
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
178 Manual, 10/2018, L1V30499596002-01
The internal accessories are installed in the accessories area of the circuit breaker behind
the front cover. This is where all auxiliary and signaling switches that communicate states as
well as auxiliary solenoids and components that provide extra functionality are placed. This
area is local, functional, and therefore strictly physically segregated from areas of the device
such as the operator, the contact system, the current conducting paths, the arc chute, and
the electronics, for safety reasons, too.
1. Remove the front cover and the terminal covers of the circuit breaker to install internal
accessories.
3-pole circuit breaker:
4-pole circuit breaker:
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