The Schneider Electric range of three phase combinations includes two module units. All internal phase connections between switches and sockets are factory wired. Combination sockets feature a clear dustproof and hoseproof flap with a snap catch latch. Both the superseded non IP56 plain plugs and the current IP66 retention ring plugs can be accommodated. Earth and neutral connectors accommodating 3 x 6mm2 cables are supplied with 500V models.