The Siemens 5UB1565 is a DELTA i-system German Schuko socket outlet in electric white, featuring integrated overvoltage protection, a function display, and a labeling field. Rated at 16A/250V with screwless plug-in connection terminals, it is designed for flush mounting in standard 55x55mm insert format. This is the electric white premium variant — the same overvoltage-protected socket as the 5UB1564, in a warmer electric white shade that pairs well with ivory and cream interior schemes.

When should I choose the overvoltage-protected socket over the standard version?

The built-in overvoltage protection guards connected equipment against transient voltage spikes from the mains — caused by switching operations, nearby lightning strikes, or grid fluctuations. Choose the 5UB1565 over the standard electric white 5UB1561 when you are powering sensitive electronics (computers, monitors, laboratory instruments, AV equipment) and want protection at the socket level without a separate surge protector adapter. The function display shows whether the protection circuit is active — if the LED goes out, the protective components have sacrificed themselves and the socket should be replaced.

How does the function display differ from the standard status indicator?

The standard status indicator on 5UB1560–5UB1563 simply shows that the socket is live. The function display on the 5UB1565 goes further — it monitors the health of the overvoltage protection circuit itself. A green LED means the surge protection is intact and active. If the LED extinguishes, the protective varistor has reached end of life (typically after absorbing one or more large surges) and the socket insert should be replaced to restore protection.

Frequently Asked Questions

Does the overvoltage protection replace a Type 1 or Type 2 surge protection device at the distribution board?

No. The socket-level protection is a supplementary Type 3 device for fine protection of individual equipment. It works together with — not instead of — the building's primary surge protection at the distribution board. For complete protection per IEC 61643-11, all three stages (Type 1 at the service entrance, Type 2 at sub-distribution, Type 3 at the socket) should be present.

How does the 5UB1565 differ from the 5UB1564?

The only difference is the color. The 5UB1564 is basic white, while the 5UB1565 is electric white — a warmer, creamier shade. Both offer identical overvoltage protection, function display, and labeling field. Choose based on which white tone matches your existing frames and interior design.