Switches are of the quick make and break type, suitable for use on AC or DC. Units have removable moving contact assemblies to facilitate wiring.

Exel 2 surface mounting enclosures are fabricated from rust protected sheet steel with a light grey paint finish with removable top and bottom endplates incorporating knockouts (blank endplates available) and gasketed doors giving IP41 protection. Chromium plated front operated handles, with "ON (I) OFF (O)" indication, and internal fixing enables units to be mounted closely side by side. Interiors comprise porcelain bases fitted with non ferrous conducting components.

HRC fuse carriers are designed for offset contact fuse links to BS 88: Part 2. Eaton MEM HRC fuse links fitted to switch-disconnector-fuses are suitable on systems up to 415V AC. Eaton MEM fuses used in these products are also suitable for 250V DC systems. 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.

Units are fitted with HRC Fuselinks of maximum rating but will accept fuselinks of a lower rating, refer to the Paramount HRC Fuselinks section.

HRC pattern switchfuses are fitted with type SCH carriers (20A, 32A, 63A-moulded; 100A, 125A-porcelain). 100A units fitted with moulded carrier type 10SCH can be supplied to special order.

Motor Ratings
The motor ratings assigned to TPN switch-disconnector 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 100A.

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