Quick-acting:
Fuses designed to quickly interrupt overload and short-circuit currents
Normal-acting:
Fuses with time-current characteristics between those of quick-acting and time-lag/inrush-withstand fuses
Time-lag:
Fuses designed to better withstand inrush currents and compliant with IEC time-current characteristics
Inrush-withstand:
Fuses designed to better withstand inrush currents