The 5UB1513 is the orange ZSV-designated SCHUKO socket in the DELTA i-system family. The orange housing is not decorative — it signals a circuit connected to the additional safety power supply (ZSV, zusätzliche Sicherheitsstromversorgung), a dedicated backup feed that remains live when the general mains supply is disconnected. This is the entry-level identification variant: standard contact protection, no labeling field, no indicator lamp — just the unmistakable orange color that electricians and facility managers recognize instantly.

What is ZSV and where is it required?

Per VDE 0100-710 and DIN VDE 0100-560, ZSV (additional safety power supply) is a secondary power source that supplies equipment whose failure would create a hazard beyond the immediate electrical fault. Common ZSV loads include: surgical lighting in operating theaters, life-support equipment power outlets in intensive care units, fume extraction in laboratories, and emergency communication systems. When the main distribution board is de-energized — whether by a scheduled shutdown or a fault — ZSV circuits stay powered. Orange sockets provide immediate visual confirmation that the outlet belongs to this protected circuit.

How does orange ZSV differ from green SV and red emergency?

The three VDE safety colors form a hierarchy: green (SV, Sicherheitsversorgung) is the highest priority — safety circuits that must never lose power under any circumstances, such as fire alarm panels and smoke extraction fans. Orange (ZSV) is the middle tier — additional safety supply for equipment that must survive a general mains disconnect but can tolerate brief transfer interruptions. Red (emergency/standby power) is normally de-energized and only becomes live when the standby generator or UPS activates during a mains failure. Knowing which color means what prevents connecting the wrong equipment to the wrong circuit during commissioning.

Frequently Asked Questions

Does the 5UB1513 have increased touch protection?

No — this is the standard protection variant. If you need orange ZSV identification with increased touch protection in the DELTA i-system range, use 5UB1901, which adds erhöhter Berührungsschutz (recessed contacts, smaller apertures) while keeping the same orange ZSV coding and 55 × 55 mm plate dimensions.

Can I mix orange ZSV sockets with standard white sockets on the same wall plate?

Yes — all DELTA i-system sockets share the same 55 × 55 mm cover plate format and fit the same multi-gang frames. It is common practice to install a single orange ZSV socket alongside white general-purpose sockets in a shared frame, giving staff a clear visual cue for which outlet stays powered during a shutdown.