The WAGO 261 series feed-through ground/earthing terminal block is a green-yellow, single-deck unit with buttons on both sides, fixing flanges, and side marking slots. It features one grounding/protective-earth terminal for four wires, utilizing two clamps on each side, suitable for wire sizes ranging from 0.08mm² to 2.5mm² (#28AWG to #14AWG). The terminal block employs CAGE CLAMP spring connections and has a 3.2mm fixing hole for mounting, equivalent to model 261337342000.