Siemens SENTRON 3WA1 Manual page 232

Accessories
4.2 Preparatory and concluding installation steps for the installation of internal accessories
Opening the circuit breaker and discharging the stored-energy spring
1. Check that the circuit breaker is ready to close ("OK" indication) and the stored-energy
spring is charged ("CHARGED" indication).
2. Press I / CLOSE.
3. Check that the "CLOSED" and "DISCHARGED" indications are active.
4. Press O / OPEN.
5. Check that the "OPEN" indication is active.
230
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06