The 5UB1511-0KK is the clawless-mounting variant of the standard DELTA i-system white SCHUKO socket (5UB1511). Electrically identical — same 10/16 A rating, same 250 V nominal voltage, same screwless plug-in terminals accepting up to 2.5 mm² conductors — but fixed by the two center screws alone, without the self-returning metal claws that normally grip the flush box wall during installation.

When does clawless mounting matter?

Metal claws need wall material inside the flush box to bite into. Three situations make clawless the only viable option: (1) the box is set in solid concrete or brick and the claws have nothing to expand behind, (2) the box is too shallow to accommodate the claw assembly (standard DELTA i-system sockets need 45 mm minimum depth; some older boxes are only 35 mm), or (3) the box is damaged and the claw bite points are cracked or missing. In all three cases, screw-only mounting solves the problem without changing the wall box.

What stays the same as the standard 5UB1511?

The 55 × 55 mm cover plate fits all DELTA i-system frames. The screwless plug-in terminals accept rigid and flexible conductors up to 2.5 mm² — strip to 12 mm, push in, done. The thermoplastic housing is halogen-free, RoHS-compliant, and rated for indoor use only (IP20). Country of origin is Spain.

Frequently Asked Questions

Does clawless mounting compromise holding strength?

No — when installed correctly in a standard flush box, the two center screws provide sufficient mechanical retention. The claws are redundant when screws are torqued properly; they primarily assist during positioning, not long-term holding.

Can I retrofit clawless sockets into existing boxes?

Yes — the 5UB1511-0KK fits any standard 60 mm flush box with intact screw posts. If your existing boxes have damaged claw bite points, this variant eliminates the problem entirely.