Applications
3.4 Applications with closing coil and shunt trip
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
209
If the circuit breaker is ordered with an optional closing coil (100% OP) or first shunt trip
for uninterrupted duty (100% OP), the "ready4COM" feature is taken into account during
production of the circuit breaker. When this feature is available, closing coil CC-COM is
used in the circuit breaker instead of the CC closing coil and shunt trip ST-COM is used
instead of the first ST shunt trip.
The "ready4COM" feature is available in every switching device whose article number
has a 9th digit that is not equal to A.
Note
Switching via communication requires magnetic systems for uninterrupted duty
(100%
OP)
If the circuit breaker is ordered with an optional closing coil for momentary duty (5% OP)
or first shunt trip for momentary duty (5% OP), switching via communication is not
possible.
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