Siemens Sentron 3VA Manual page 290

Accessories
4.5 Manual operators
Switching on the molded case circuit breaker when panel door is open
When the panel door is open, the 3VA UL molded case circuit breaker can be switched using
the Max-Flex operator with a deliberate action only.
Procedure
1. Press interlock pin upward.
2. Keep interlock pin pressed while the molded case circuit breaker is closed.
288
3VA molded case circuit breakers with UL and IEC certification
Manual, 01/2019, L1V30435333-01