Abstract: An electrical socket connector is adapted to receive a multiple-pin shrouded plug and has a body containing at least live and neutral sockets and formed with a recess to receive a shroud surrounding the pins of the plug. Moveable shutters are spring biased to close the live and neutral sockets and have cam surface portions extending into the recess to be engaged by the shroud of a plug so as to be moved against the spring bias on insertion of a shrouded plug, thereby to open the shutters.