This Acti9 insulation accessory is a set of 20 screw shield. Suitable for 1P, 1P+N, 2P, 3P, 3P+N, and 4P Circuit protection. This accessory is compatible with Acti9 iC60, iSW, iID, iSW-NA, Reflex iC60, ARA, and RCA Device location in product is top and bottom, and mounting mode is by clips. This product is compliant with EN/IEC 61008-1.