Fuse cartridges are essential components for ensuring the safety and reliability of electrical installations. They protect cables, equipment, and people from overloads and short circuits.

At Michaud, a specialist in low-voltage electrical equipment distribution, we guide our customers in selecting fuse cartridges suited to their specific needs. Among the most commonly used types are gG, AD, and NH fuses.

gG fuses are standardized according to IEC/EN 60269 and provide complete protection against:

• prolonged overloads,

• short circuits.

Applications of gG Fuse Links

gG fuses are among the most widely used in electrical installations thanks to their broad protection range. They provide comprehensive protection against overloads and short circuits for many types of equipment.

• Cable and conductor protection: gG fuses prevent overheating and damage caused by excessive current, ensuring the safety of electrical lines.

• Low-voltage distribution boards: they effectively protect downstream circuits, maintaining service continuity and installation safety.

• Residential and commercial installations: whether in homes, office buildings, or commercial facilities, gG fuses offer reliable and long-lasting protection for electrical equipment.

✅ Main advantage: a single gG fuse can often protect an entire electrical installation, making it a simple, economical, and highly effective solution.

Unlike gG fuses, AD fuses do not correspond to an electrical protection class but rather to a mechanical format. They stand out for their practical design and robustness, making them a solution still commonly found in many installations.

• Plug-in cartridges inserted into a pin-type fuse holder

• Easy and quick replacement

• Generally associated with a gG characteristic curve

AD fuses are commonly used in:

• metering panels,

• older residential and commercial installations,

• and certain low-voltage distribution networks.

✅ Main advantage: AD fuses stand out for their robustness and ease of maintenance, making them ideal for environments where reliability and simple servicing are top priorities.

NH fuses (from German Niederspannungs-Hochleistungs-Sicherung) are designed for industrial environments and high-power networks.

• High breaking capacity (up to 120 kA)
• Excellent reliability under harsh conditions
• Safe handling with insulated fuse handles

• Motor feeders
• Transformers
• Industrial electrical panels
• High-power low-voltage networks

• NH gG: General protection for cables and equipment

• NH aM: Specific motor protection (short-circuit protection only)

  ✅ Advantage: The ideal solution for demanding industrial installations.