The WAGO 261 series is a space-saving feed-through terminal block designed for grounding/earthing applications, featuring a single deck with side marking slots. It is green-yellow in color and supports one protective-earth (1PE) connection with four wires (two clamps on each side) for wire sizes ranging from 0.08mm² to 2.5mm² or #28AWG to #14AWG. The terminal block utilizes CAGE CLAMP spring connections and can be mounted on a DIN rail or surface using an accessory snap-in foot mounting, with a width of 10mm. It is equivalent to model 261357.