NH00 blade fuses (commonly known as NH fuses or DIN fuses) are used in industrial facilities and electrical panels to provide protection against high short-circuit currents. The abbreviation "NH" stands for the German "Niederspannungs-Hochleistungs" (Low Voltage - High Performance).

1. Technical Specifications and Structure

• Size: 00 (Standard width, slightly thicker than the "000" series).

• Current Range: Generally available from 6A to 160A.

• Breaking Capacity: Very high (typically around 120 kA), meaning it can safely interrupt large short-circuit currents.

• Body Material: Made of heat and pressure-resistant steatite (ceramic).

  
  

2. Utilization Categories (Characteristics)

• gG / gL: General purpose. Provides both cable and line protection (the most common type).

• aM: Motor protection. Delayed to withstand the high inrush current during motor startup.

• aR / gR: Semiconductor protection (high-speed fuse). Reacts very quickly to protect electronic devices.