This is an insulation accessory that protects against direct contact with power circuit.It is used with 4 poles Compact INS 630b to 1600 and Compact INV 630b to 1600 switch disconnectors.It allows to reach the clearance distance requested by IEC 60947-2 standard.It provides IP40 degree of protection and IK07 mechanical impact protection.It is supplied with lead-sealing accessories.