All units are supplied with fuselinks or switchlinks fitted.

Glasgow fuse-switch-disconnectors and switch-disconnectors are type tested to BS EN 60947-3 and meet the constructional requirements for isolation as specific in BS EN 60947-3.

Conditional short circuit current rating tests at a value of 80kA rms Ue 415V have been carried out with Eaton MEM HRC fuses fitted. Five frame sizes are available to provide a range from 63A to 800A, with utilization category AC22A and AC23A Ue 415V ratings as specified in the table below.

Fuse-switch-disconnectors may be converted to switch-disconnectors by fitting copper links to give assigned AC20A Ui 660V and AC21A Ue 415V ratings as specified in table below.

All units have retractable operating handles which drive over-centre mechanisms incorporating powerful operating springs. Opening and closing of the switches is not solely dependent upon these springs. Moving contact assemblies can be removed to facilitate installation or for contact or renewal. Flag "on-off" indication is provided and there are adequate terminal cover shields to prevent contact with live metal.

TPSN indicates triple pole and switched neutral, the neutral pole making first and breaking last.

Rated insulation voltage Ui 660V.

Surface-mounting enclosures comprise heavy gauge steel body plates incorporating cast iron frame members and are rust-protected, with a light grey paint finish. Front access doors, which are detachable, are fitted with dust-excluding gaskets and are interlocked to prevent opening when the switch is 'on'.

The interlock can be defeated by a competent person for maintenance purposes. Operating handles may be locked in both the 'on' and 'off' positions using a padlock. Castell type interlocks can be supplied to special order. Internal fixing holes allow units to be mounted closely side by side and all models have removable top and bottom end plates. These are pierced for connections, divided into front and rear (fixed) portions to simplify cabling using Eaton MEM split-type cable boxes, and provided with undrilled cover plates.

Glasgow units are designed for use with HRC cartridge fuse links to BS 88: Part 2. 63A and 100A units employ offset contact fuse-links.

All performance tests have been carried out using Eaton MEM BS 88 fuselinks.
The exclusive use of Eaton MEM fuselinks will extend the warranty period to 3 years. Fuse-switch-disconnectors and switch-disconnectors are supplied with fuselinks or switchlinks.

The motor ratings assigned to TPN switch-disconnecyor units are utilization category AC23A (frequent operation) to BS EN 60947-3, which calls for make and break testing at 10 and 8 times rated current respectively for units having a motor rating up to and including 100 Amps.

Ratings for switch-disconnector-fuses are dependent on suitable HRC fuses being fitted.

Glasgow fuse-switch-disconnectors and switch-disconnectors are supplied with fuselinks or switchlinks. The table below indicates the type and quantity of each.

Units are fitted with HRC Fuselinks of maximum rating but will accept fuselinks of a lower rating.

Cast metal split pattern, supplied with fixing bolts and plain bushes. Two types are available, suitable for straight or angled entry.

They permit conductor spreading of larger PVC cables and fit directly on to Glasgow units.