FIX distribution blocks The FIX distribution blocks save you time and space during potential distribution. The FIX family consists of the PTFIX, PTFIX-function, and PTVFIX product families. The various blocks come ready to connect and are available in various numbers of positions and mounting. How should I wire a construction switchboard when the supply has 3 phases and neutral but no separate ground: bridge PE to N, add grounding, or rely on an RCD? If the supply is TN-C with a PEN conductor, bring the PEN to the construction switchboard and split it into separate N and PE there; do not. Schneider Electric NSYEBs are enclosed IEC power distribution blocks that are available with copper or aluminum lugs. They are one-pole modular units with an interlocking dovetail feature that enables ganging of the blocks to create multi-pole configurations according to application requirements. 5 mm² to 185 mm² – Compact potential distribution blocks for the connection of aluminum wire and copper wire Clamping blocks and power distribution blocks (PDB) for the DIN rail are suitable for collecting and distributing potentials within. A distribution box is the heart of any electrical system. It takes the incoming power and safely distributes it to different circuits throughout your building. Our focus has always been on solutions from the field of cable support systems.