Accessories
4.4 Accessory auxiliary switches and signaling switches
3WA1 air circuit breaker
270 Equipment Manual, 02/2023, 92310000002-06
4.4.4 Spring charge signaling switch
4.4.4.1 Description
Spring charge signaling switch S21 signals whether the stored energy mechanism of the
circuit breaker is charged. It is typically used in combination with the spring charging
motor.
Note
If the spring charging motor is installed at the factory, the spring charge signaling switch
is present as standard. If the spring charging motor is retrofit, the
switch must be
ordered separately if it is required.
You will find more information in the operating instructions available on the internet
(https://support.industry.siemens.com/cs/ww/en/view/109783662
).
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