Electro-PJP 4mm Shrouded Sockets for use with Shrouded 4mm Plugs - PJP 3266-C-N, The Electro-PJP 4mm safety socket is a professional quality shrouded 4mm safety socket offered in a wide range of colours with solder, stud or 6.35mm faston termination conforming to IEC 1010 safety standards. The socket is specifically designed for use with shrouded 4mm plugs but will also accept standard 4mm plugs. It has polyamide insulation with a nickel plated brass contact. It is overvoltage rated to CAT II 1000 V / CAT III 1000 V / CAT IV 600 V. A pair of fixing tools is available to assist in rapid assembly of sockets to panels, a socket clamping tool (17-1480) and a nut wrench (17-1485). PJP 3266-C-N Black Shrouded Socket (6.3mm Faston)