The 5UB1518-0KK is the product for when both constraints hit at once: the installation needs increased touch protection, and the flush box won't accept a claw-type socket. It combines the VDE 0620-compliant contact safety of the 5UB1518 with the screw-only fixing of the -0KK variant — same 55 × 55 mm titanium white cover plate, same screwless plug-in terminals, same 16A/250V rating.

When do both upgrades apply simultaneously?

This is not a rare combination in practice. Consider a kindergarten built in a converted older building: the wall boxes are shallow 35 mm units set in solid brick — too tight for the claw assembly and nothing for claws to bite behind. But the room is full of children, so standard sockets without increased touch protection are a code violation. The 5UB1518-0KK solves both problems with one PN: screw-only mounting fits the shallow boxes, increased touch protection satisfies VDE 0100-410. Same scenario arises in hospital pediatric wards retrofitted into older wings, primary schools in pre-war buildings, and any space where child safety codes intersect with existing infrastructure.

Installation note: screw-only fixing in older boxes

Clawless sockets rely entirely on the two center screws into the flush box's threaded posts. In older boxes, those posts may be worn or stripped. Before ordering, verify that the box's screw posts are intact — if they are damaged, the box itself needs replacement regardless of which socket variant is used. The 5UB1518-0KK does not compensate for a failed mounting box, only for boxes where claws are mechanically incompatible.

Frequently Asked Questions

Is the increased touch protection on the -0KK identical to the standard 5UB1518?

Yes — the clawless variant uses the identical insert mechanism as the standard 5UB1518. The only difference is the omission of metal claws from the mounting assembly. Contact depth, aperture diameter, and VDE 0620 compliance are unchanged.

Can I get this combination in soft black?

No — the 5UB1518-0SB01 (soft black with increased touch protection) uses standard claw mounting. There is no soft black clawless increased-touch variant in the current DELTA i-system catalog. If you need all three attributes (soft black + increased touch + clawless), you would need to verify with Siemens whether a special-order combination exists.