Integrated increased protection against contact in accordance with VDE 0620 Part 1. Features: Front-side retrofitting of QuickFlex add-on modules without disassembling the socket. Quick-thread screws for claw fastening. Recessed claws with return spring. High-gloss galvanised support ring insulated from the claw. With claw and screw fixing. With plug-in terminals. Colour anthracite.