Basic vertical PDU (power distributiuon units)., 811-7061: 10 x BS1363 Sockets, BS1363 Plug,Guarded Unit Switch,Black Finish. 811-7064: 12 x BS1363 Sockets, BS1363 Plug,Guarded Unit Switch,EMI Filter,Black Finish. 811-7068: 12 x BS1363 sockets, EN60309 Pl