Dear experts, is it possible to mechanically interlock three withdrawable circuit breakers 3WA1120-2AB61-8EA4-Z R55? It is necessary to interlock the generator line in a circuit with two transformer inputs.
Interlocking is required ON-OFF-ON, OFF-ON-OFF, ON-OFF-OFF, OFF-OFF-ON.

They answered elsewhere, it is enough to order additionally 3WA9111-0BB41 (42.42), 3 pcs.

Yse

please refer to the manual 

4.9.1.5 Bowden cable interlocking of three circuit breakers

Description
In the case of parallel infeeds from the normal power supply (circuit breakers Q1 and Q3) and 
a standby power supply (circuit breaker Q2), the standby power supply may only be switched 
on when the two normal line infeeds are switched off.

link

https://support.industry.siemens.com/cs/de/en/view/109763061