Trupower 4 way trailing socket with surge protection trupower rb 05m04spd the trupower rb 05m04spd 4 way trailing sockets are perfect for home or office use they will provide power where you need it the trailing sockets are surge protected and fitted with a neon indicator to alert the user when the power is active or left switched on the sockets are approved to specification bs 1363 and approved for use in the uk trupower rb 05m04spd 4 way trailing socket 5m lead surge protected