Accessories
4.2 Preparatory and concluding installation steps for the installation of internal accessories
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
229
4.2 Preparatory and concluding installation steps for the
installation of internal accessories
Opening the circuit breaker and discharging the stored-energy spring
DANGER
Will cause death, serious personal injury, or equipment damage.
Turn off and lock out all power supplying this equipment before working on this device.
Note
If a spring charging motor is configured, disconnect the control circuit to the spring
charging motor first, in order to
prevent the stored-energy spring from recharging.
If an undervoltage release is configured, control voltage must be applied to the UVR.
Disconnecting the control circuit to the spring charging motor
1. Press O / OPEN.
2. Unplug manual connector X5.
Note
Spring charging motor and undervoltage
release present
If an undervoltage release is present, do not unplug the entire X5 manual connector,
as this will also disconnect the control voltage on the undervoltage release.
Only disconnect cable connections X5
-1 and X5-2 in order to disconnect the control
circuit to the spring charging motor. For more information, see Chapter ETU600
terminal assignment diagram (Page
419).
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