Wieland Fuse Terminal Blocks WKFN 4 FSI with Spring Clamp - Wieland 56.704.4155.0, This Fuse Terminal Block WKFN 4 FSI with Spring Clamp from Wieland is for mounting on a TS35 DIN rail (top hat rail). Featuring a 400V rated voltage and 11mm wire strip length, along with a 0.13-6mm² minimum cross section (solid) and 0.13-4mm² minimum cross section (fine stranded). Wieland 56.704.4155.0 fasis Automotive Fuse DIN Block WKFN 4 FSI Grey