The Siemens 5UB1536 is a red German Schuko-style (Type F) socket outlet from the DELTA i-system range, featuring an integrated labeling field. Rated at 16 A / 250 V AC with increased touch protection, it fits a standard 55 × 55 mm frame for flush-mount installation. Screwless plug-in terminals keep wiring fast and secure.

Red with labeling field — full circuit identification

Red socket outlets in German-industrial installations signal circuits backed by a UPS or dedicated safety power supply. The color alone gives maintenance staff instant visual recognition — they know a red socket is critical before they even read the label. Adding the integrated labeling field lets you write the specific circuit number, distribution board reference, or protected equipment name directly on the front plate. Color identifies the circuit type at a distance; the label pinpoints the exact circuit at close range.

How does this differ from the basic red 5UB1522?

Both are red 16 A / 250 V Schuko sockets with increased touch protection. The difference is the labeling field: the 5UB1522 keeps a clean, label-free front plate, while the 5UB1536 adds the integrated writable surface. If red alone provides enough identification for your installation, the 5UB1522 is the simpler and more cost-effective choice. If you need written circuit designation — for compliance documentation, maintenance handover, or multi-tenant facilities — the 5UB1536 adds that capability without a separate label holder.