A Glasgow Fuse Switch Disconnector, features neutral makes first and breaks last. The TPSN indicates triple-pole and switched neutral, the neutral pole making first and breaking last. The unit has retractable operating handles which drive over-centre mechanisms incorporating powerful operating springs. Opening and closing of the switch is not solely dependent upon these springs, moving contact assemblies can be removed to facilitate installation or for contact inspection or renewal. Flag ON-OFF indication is provided and terminal cover shields prevent contact with live metal.