The Siemens 5UB1916 is the lockable hinged-cover Schuko socket in the DELTA i-system 5UB191x line. It adds a key-operated barrel lock to the spring-loaded flap, preventing unauthorised plug insertion while retaining increased touch protection and screwless terminals. It is the counterpart to the electric-white 5UB1906, distinguished by the titanium white (RAL 9010) finish.

How does the locking mechanism work?

The hinged cover incorporates a barrel lock that secures the flap in the closed position. All 5UB1916 units are keyed alike, meaning a single key operates every lockable socket in the installation. When locked, the cover cannot be lifted to insert a plug. When unlocked, the cover operates exactly like a standard spring-loaded flap — lift, plug in, and the cover rests on the plug body.

Where are lockable sockets typically required?

Lockable sockets are specified wherever socket access must be controlled: school corridors and classrooms, public waiting areas in hospitals and transport terminals, hotel conference rooms, and commercial spaces with metered or billed electricity. They also prevent accidental disconnection of critical equipment by stopping unauthorised plug removal.

How does this differ from the electric-white lockable 5UB1906?

The 5UB1916 and 5UB1906 are functionally and mechanically identical — same barrel lock, same hinged cover, same screwless terminals, same increased touch protection. The only difference is the white shade: 5UB1916 is titanium white (similar to RAL 9010), while 5UB1906 is electric white (similar to RAL 1013). Choose the 5UB1916 to match a titanium white DELTA i-system frame programme.