The Siemens 5UB1523 is a white German Schuko-style (Type F) socket outlet from the DELTA i-system range, featuring an integrated labeling field (Beschriftungsfeld) for circuit identification. Rated at 16 A / 250 V AC with increased touch protection, it fits a standard 55 × 55 mm frame for flush-mount installation in dry indoor environments. Screwless plug-in terminals keep installation fast and secure.

What does the labeling field do?

The integrated labeling field is a writable surface built into the socket front plate. Instead of attaching a separate label holder or relying on color alone, you can write the circuit number, distribution board reference, or equipment name directly on the socket. This is particularly useful in commercial and light industrial installations where multiple identical-looking white sockets serve different circuits and clear identification matters for maintenance and safety documentation.

How does this model differ from the 5UB1524?

Both the 5UB1523 and 5UB1524 are white Schuko sockets with labeling fields. The difference is the operating display: the 5UB1524 adds a small LED indicator that shows whether the socket is live. If you need visual confirmation of power at the socket itself — for example, in a test bench or equipment station — choose the 5UB1524. If the labeling field alone meets your identification needs, the 5UB1523 keeps the front plate simpler.