Fused spur connection units with support ring 71 x 71 mm

British Standard (BS 1363-4) switched Fused spur connection unit, 13 A 250 V~
System 55

British Standard (BS 1363-4) switched Fused spur connection unit, 13 A 250 V~ with control light 
System 55

British Standard (BS 1363-4) not switched Fused spur connection unit, 13 A 250 V~
System 55