A comprehensive range of extension boxes and spreader boxes is available. Units are fitted with HRC Fuselinks of maximum rating but will accept fuselinks of a lower rating, refer to the Paramount HRC Fuselinks page. SPSN and TPSN indicate switched neutral. Neutral makes first and breaks last. If DP fuse-switch-disconnectors are required, use SPSN and replace the supplied switch link with a compatible fuselink.
Definitions of utilisation category:
- AC20a – Connecting and disconnecting under no load condition.
- AC21a – Switching of resistive loads including moderate overloads.
- AC22a – Switching of mixed resistive and inductive loads including moderate overloads.
- AC23a – Switching of motor, or other high inductive loads.