Knowledge Centre

Industrial and Utility Application Guide

Application Guide

General guide for where Lawson Fuses Fuse-Links are used in the Industrial and Utility market sectors.

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Lawson Fuses Application Guide

Guidance Notes

Selection of a suitable fuse

Selection of Voltage Rating

Selection of Breaking Capacity

Overload Protection If<=1.45Iz

Earthfault Protection

Discrimination (or Selectivity)

Capacitor Circuits

Fluorescent Lighting

Thermal Derating

Altitude Derating

Type 2 Co-ordination

Motor Starting

Fuse-link Selection for 3 Phase 415V a.c. Induction Motor Circuits

Maximum Full Load Current Starting Capability

Maximum Full Load Current Starting Capability