This large unit is suitable for standard and larger electrical plugs, including 3 phase connectors. It also has 4 holes of 3 different sizes suitable for pneumatic male air hose connectors. The unit has a locking mechanism suitable for up to 4 safety padlocks. Suitable for 3-phase connectors. Locking mechanism for up to 4 safety padlocks. Size: 180 x 80 x 80mm. Access hole for cable to be fed through.