Why Choose the Mersen NH3GG40V500-1 NH Fuse Link?
The Mersen NH3GG40V500-1 is a high-performance NH3 gG low-voltage fuse link designed to protect electrical cables, distribution circuits and industrial equipment against overloads and short-circuit currents. Manufactured to DIN NH standards, this full-range fuse link provides dependable circuit protection for demanding commercial and industrial electrical installations.
With a rated current of 500 A and an operating voltage of 400 V AC, the NH3GG40V500-1 can interrupt fault currents across its full operating range. Its high breaking capacity helps protect equipment from the thermal and electrodynamic effects associated with severe short circuits.
The fuse link features isolated gripping lugs, silver-plated copper contact blades and a ceramic body for reliable electrical and mechanical performance. A double indication system provides clear visual confirmation of fuse operation, while the standard NH3 format supports installation in compatible NH fuse bases and switch-fuse assemblies.
Key Advantages
- Full-range gG fuse characteristic for overload and short-circuit protection.
- 500 A rated current for high-capacity electrical distribution circuits.
- 400 V AC rated voltage for low-voltage industrial systems.
- High 100 kA AC breaking capacity for dependable fault-current interruption.
- Isolated gripping lugs improve safety during professional fuse handling.
- Double indicator provides clear fuse-status identification.
Key Features
- Mersen DIN NH standard fuse link.
- NH3 fuse size.
- 500 A rated current.
- 400 V AC rated voltage.
- Full-range gG operating characteristic.
- 100 kA maximum AC breaking capacity.
- Double fuse-operation indicator.
- Isolated metal gripping lugs.
- Silver-plated copper contact blades.
- Durable ceramic fuse body.
Reliable Protection for High-Current Electrical Circuits
The Mersen NH3GG40V500-1 uses a full-range gG fuse characteristic to protect cables, conductors and electrical equipment against both overload currents and high-level short circuits. When excessive current flows through the fuse element, the link interrupts the circuit before damaging thermal or mechanical stresses can affect downstream equipment.
Its high breaking capacity makes the fuse suitable for industrial installations where substantial prospective fault currents may occur. The NH design provides robust blade contacts and secure installation within a compatible fuse base, although installation and replacement must be carried out by qualified electrical personnel using suitable NH fuse-handling equipment.
Typical Applications
- Industrial low-voltage distribution boards.
- Electrical cable and conductor protection.
- Switch-fuse units and fuse-switch disconnectors.
- Manufacturing and process-control installations.
- Commercial power distribution systems.
- Industrial machinery supply circuits.
- Motor feeder and equipment protection circuits.
- Infrastructure and utility electrical systems.
