It primary responsibility of a maintenance technician is to ensure the safety and dependability of electrical systems.
IEC 60269, the international standard for low-voltage fuses, is one of the most important standards to follow:
Key Features of IEC 60269
Structure
IEC 60269 is divided into many parts that cover different types of fuses.
- Part I: Covers general requirements.
- Part 2: Covers fuses for the industrial applications.
- Part 3: Covers fuses for household and related applications.
- Part 4: Fuses to protect semiconductor devices.
- Part 5: Recommendations for applying low-voltage fuses.
Fuse Types
The standard defines various fuse classifications, including:
- gG/gL: General-purpose fuses for cable and wire protection (the one shown in the image)
- aM: Motor circuit fuses for short-circuit protection.
- gR: Full-range semiconductor fuses.
- gS: Fuses for protecting specific applications.
Rated Characteristics
Technical Specifications
- Type: NT1.
- Rated Current: 200A.
- Voltage Ratings: AC 500V (120kA) AC 690V (50kA) DC 440V (100kA)