Spring Charging Motor; Description - Siemens SENTRON 3WA1 Manual

You can purchase the accessories in the Siemens Industry Mall
(http://www.siemens.com/product?3WA9111-0EC1*).
4.3.6

Spring charging motor

4.3.6.1

Description

The spring charging motor (M) automatically charges the stored energy mechanism as
soon as it is discharged (e.g. after the closing operation). This makes fast reclosing of
the circuit breaker possible. When the charging operation is complete, the spring
charging motor switches off.
Note
If the circuit breaker is not connected to the power supply, the stored energy mechanism
must be charged manually using the charging handle.
The spring charging motor is supplied factory-fitted with the spring charge signaling
switch, which indicates the charging state of the stored energy mechanism. If the spring
charging motor is retrofit, the spring charge signaling switch can be ordered separately.
You can find details of the spring charge signaling switch in Chapter Spring charge
signaling switch (Page 270).
The automatic charging operation can be prevented by the motor disconnect switch as
an option, see Chapter Motor disconnect switch (Page 259). The motor disconnect
switch is an optional accessory and can be retrofit.
The spring charging motor has no effect on the service life or operating cycles of the
circuit breaker.
It can be retrofit.
You will find more information in the operating instructions available on the internet
(https://support.industry.siemens.com/cs/ww/en/view/109783664).
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
4.3 Control and signaling accessories
Accessories
257