The Siemens 5UB1403 is the pure German SCHUKO Type F socket in the DELTA profil frame — the only outlet in this batch without a center protective contact. It uses side earth clips exclusively, as defined by the CEE 7/3 standard, and is designed for installations where every connected device uses a German-standard Schuko or Euro plug.

Pure Type F vs universal CEE 7 — why does it matter?

Siemens' "center protective contact" sockets (5UB1315, 5UB1348, 5UB1350, 5UB1367) add a central earth pin to accept French Type E plugs alongside German Type F. The 5UB1403 omits this pin — it is a dedicated Type F socket with only the side earth spring clips. In Germany, Austria, the Netherlands, and other Schuko-only markets, a pure Type F socket is simpler, cheaper, and mechanically more robust because there is no central pin to bend or break. The absence of the pin also means the socket face is fully flush — nothing protrudes that a furniture leg or vacuum cleaner could snag.

What makes the screwless plug-in terminal different?

The 5UB1403 uses a push-button release mechanism: strip the wire, push it into the terminal, and it locks. To remove, press the release button with a screwdriver. This is faster than screw terminals and more secure than basic push-in connectors because the release is deliberate — a tug on the wire will not accidentally disengage it. For electricians wiring large multi-room installations, the time savings compound across dozens of outlets.

Which frame does it fit?

The 65x65mm plate matches all DELTA profil surrounds, covers, and multi-gang frames. If the project already uses DELTA profil switches, the 5UB1403 slots in without adapters. For DELTA i-system (55x55mm) or DELTA style (68x68mm), use the corresponding socket in that line — frame plates are not cross-compatible.