The Siemens 5UB1368 is the NEMA 5-15R outlet in the DELTA style frame — the largest and most visually prominent of the three DELTA design lines. With a 68x68mm cover plate, it makes a stronger architectural statement than the 51x51mm i-system and profil alternatives.

Why the 68x68mm frame?

DELTA style is Siemens' premium switch range. The larger plate dimension gives each device more wall presence and a more contemporary look, often chosen for high-end residential, hotels, and corporate interiors where the switchgear is a visible design element rather than something to hide. The 68mm format also aligns with standard European masonry box spacing, making it a natural fit in new construction.

How does it compare to the i-system and profil NEMA outlets?

All three lines — i-system (5UB1303/5UB1307, 51x51mm), profil (5UB1311, 51x51mm slim), and style (5UB1368, 68x68mm) — house the same NEMA 5-15R insert rated at 15A/125V. The decision is architectural: i-system for a standard flush look, profil for minimum wall projection, and style for maximum visual presence. Frame plates and surrounds are not interchangeable across lines, so the choice locks in the entire room's switchgear ecosystem.