ABB spring loaded terminal blocks are designed to guarranty electrical continuity even when screw are loosened unintentionally. Main benefits include Maintain the circuit continuity thanks to "pull-out proof" cable termination combining spring loaded terminal and hook type ferrule; Maintenance free vibration proof connection & Saved space in cabinets thanks to high density wiring (up to 2 lugs per clamp). Main features include Connecting capacity from 0.22 to 10 mm² (22-6 AWG); Functions : entrelec feed-through, disconnect, test & measurement; Approved by numerous national electricity providers in EU, Africa, Asia since many years; Robust design with captive spring & Comply with IEC and BS TS5018 standards & Universal mounting feet.