Sks hirschmann 4mm safety seb 2620 f63 sockets 1000v 32a cat iii sks hirschmann 935980086 black sks hirschmann seb 2620 4mm built in safety socket with 63 x 08 spade connector for installation into switch panels and equipment chassis with wall thicknesses up to 6mm sks hirschmann 935980086 4mm safety seb 2620 f63 socket 32a cat iii black