The 503SI03E is a 3-position fused Terminal Block with grey nylon 6.6 (polyamide 6.6) moulding, tinned brass inserts and M3 steel, zinc-plated, chrome screws and 6mm2 conductor area. A common dovetail enables mixed assemblies to be constructed by clipping on additional 1-pole lengths to provide multiple versions of fused and unfused terminals. All variations can be supplied with or without wire protectors, earth version and screw wire connection method.
