The Siemens 5UB1558 is an electric white German Schuko-style (Type F) socket outlet from the DELTA i-system range, featuring increased touch protection. Rated at 10/16 A / 250 V AC, it fits a standard 55 × 55 mm frame for flush-mount installation. Screwless plug-in terminals keep wiring fast and secure. This is the safety-focused basic model — no labeling field or LED, but the internal shutter mechanism adds an important layer of protection.

What does increased touch protection do?

The increased touch protection (erhöhter Berührungsschutz) is a mechanical shutter built into the socket face. When no plug is inserted, spring-loaded barriers cover the live and neutral apertures. The shutters open only when a plug is inserted with equal pressure on both pins simultaneously — a child poking a single object into one aperture will not reach a live contact. This is mandatory in many European residential installations and increasingly specified in commercial and public buildings. The slightly higher weight of the 5UB1558 (83 g vs 78 g for the 5UB1551) comes from the additional shutter assembly.

How does this differ from the 5UB1551?

Both are electric white Schuko sockets without a labeling field, rated at 10/16 A / 250 V, with screwless terminals, flush-mount, IP20. The sole hardware difference is the increased touch protection shutter on the 5UB1558. If your installation code requires enhanced protection — or if the socket will be installed at a height accessible to children — the 5UB1558 is the correct choice. If touch protection is not required and you want the lowest cost, the 5UB1551 is the simpler model.