Why Choose the Mersen NH3GG40V630-1 NH Fuse Link?
The Mersen NH3GG40V630-1 is a heavy-duty NH3 gG low-voltage fuse link designed to protect electrical distribution systems, industrial switchgear and high-current power circuits against overloads and short-circuit currents. Manufactured to DIN NH standards, this full-range fuse link provides reliable protection for demanding industrial and commercial electrical installations.
With a rated current of 630 A and a rated operating voltage of 400 V AC, the NH3GG40V630-1 is ideal for high-current power distribution applications. Its gG operating characteristic provides comprehensive protection from sustained overloads through to severe short-circuit faults, helping safeguard electrical equipment and minimise downtime.
The fuse link features isolated gripping lugs, silver-plated blade contacts, a high-strength ceramic body and a double indication system for rapid identification after fuse operation. It is designed for installation in compatible NH fuse bases and switch-fuse disconnectors used throughout industrial power distribution systems.
Key Advantages
- Full-range gG fuse protection against overloads and short circuits.
- 630 A rated current for high-current industrial power distribution.
- 400 V AC rated voltage for low-voltage electrical systems.
- 100 kA AC breaking capacity for dependable fault interruption.
- Double visual indicator enables rapid fuse-status identification.
- Isolated gripping lugs improve handling safety during maintenance.
Key Features
- Mersen DIN NH standard fuse link.
- NH3 fuse size.
- 630 A rated current.
- 400 V AC rated voltage.
- Full-range gG operating characteristic.
- 100 kA AC breaking capacity.
- Double operation indicator.
- Isolated gripping lugs.
- Silver-plated copper blade contacts.
- High-strength ceramic insulating body.
Reliable Protection for High-Current Electrical Systems
The Mersen NH3GG40V630-1 is engineered to protect electrical cables, conductors and distribution equipment by safely interrupting overloads and high short-circuit currents before damage can occur. Its full-range gG characteristic makes it suitable for general-purpose protection across industrial and commercial low-voltage installations.
Designed for installation in compatible NH fuse bases and switch-fuse disconnectors, this fuse combines robust ceramic construction, high interrupting capacity and a double indication system to provide dependable long-term protection. Installation and replacement should always be carried out by qualified electrical personnel using suitable NH fuse handling equipment.
Typical Applications
- Industrial power distribution systems.
- Switch-fuse disconnectors.
- Cable and conductor protection.
- Main distribution boards.
- Industrial machinery.
- Commercial electrical installations.
- Motor feeder circuits.
- Heavy industrial switchgear.
