Is the basic metal-finish socket sufficient for most installations?

The 5UB1921 is the entry point to the carbon metallic DELTA i-system socket range. It omits the hinged cover, increased touch protection, and labeling field of the more expensive variants, while keeping the identical electrical core: 10/16 A at 250 V, screwless push-in terminals, halogen-free housing with a glossy carbon metallic finish, and the standard 55x55 mm cover plate format. For bedrooms, living rooms, home offices, and adult-only areas where the metallic look is the buying criterion and the extra safety features are not required, the 5UB1921 is the most cost-effective choice — roughly 15–20 % less than the full-featured 5UB1922.

How does the carbon metallic finish hold up?

The carbon metallic designation refers to a dark anthracite-grey color with a fine metallic shimmer under direct light, carrying a glossy surface finish across the DELTA i-system line. It is not a metal housing — the base material is halogen-free thermoplastic — but the surface treatment creates the visual weight of metal without the cold touch or higher cost. The glossy surface resists fingerprints better than matte finishes and wipes clean with a dry cloth.

Frequently Asked Questions

Does the 5UB1921 accept the same frames as the plastic DELTA inserts?

Yes. The 5UB1921 uses the same 55x55 mm center plate format. Any DELTA i-system or DELTA miro frame that accepts 55x55 mm inserts is compatible.

Can I retrofit a hinged cover to the 5UB1921 later?

No. The hinged cover is integrated into the socket body at the factory. If you need a flap, choose the 5UB1920 or 5UB1922 from the start.