Siemens Sentron 3VA Manual page 149

Note
2-pole version in 3-pole frame (2(3)-pole)
Only the outer poles may be used (pole 1/2 and pole 5/6).
Further circuits are available on request.
See also
Insulating equipment (Page 203)
3VA molded case circuit breakers with UL and IEC certification
Manual, 01/2019, L1V30435333-01
3.4 Use of 3VA UL molded case circuit breaker in DC systems
Applications
147