Question about Steffen Feller universal rotary dimmer 3-80W / PHAN-PHAB

No, this dimmer does not fit directly into a standard Swiss socket 60mmx60mm as it is a flush-mounted device. It has dimensions of 88mm x 88mm x 45mm and an installation depth of 34mm, which is designed for installation behind a Swiss flush-mounted box (typically 88x88mm). The visible cover is white and suitable for standard switch frames, not for the socket itself.