My parts list/tender specifications

Fan switch insert Circuit 2 - 1 -3 without zero position 1 pole, alpine white - Busch-balance SI

Data Sheet:

Three-Step switch insert without zero position, 2-1-3. Not suitable for surface mounting boxes 1701-xxx, 1702-xxx, 1703-xxx. Installation in deep flush-mounted boxes according to DIN 49073 required.