Why Choose the Mersen NH3GG50V630 NH Fuse Link?
The Mersen NH3GG50V630 is a heavy-duty NH gG low voltage fuse link designed to provide full-range protection for high-current industrial power distribution systems, electrical switchgear and cable installations. As part of the trusted Mersen NH fuse-link series, it offers dependable protection against overloads and short circuits while complying with DIN NH and IEC standards.
Featuring a 630 A rated current, 500 V AC and 250 V DC ratings, this NH Size 3 fuse link is engineered for demanding industrial environments. Its double operating indicator enables quick visual identification of an operated fuse, while live gripping lugs facilitate safe replacement using an approved NH fuse puller.
Its ceramic construction, high interrupting capacity and DIN-standard blade contacts make the NH3GG50V630 ideal for protecting industrial distribution panels, switchboards, motor control centres and high-current electrical infrastructure where reliable overcurrent protection is essential.
Key Advantages
- Full-range gG protection against overloads and short circuits.
- 630 A rated current for heavy-duty industrial applications.
- 500 V AC and 250 V DC operating ratings.
- 120 kA AC breaking capacity.
- Double indicator allows rapid visual identification after fuse operation.
- Live gripping lugs support safe installation and maintenance.
Key Features
- Mersen NH gG fuse-link series.
- NH Size 3.
- 630 A rated current.
- 500 V AC rated voltage.
- 250 V DC rated voltage.
- gG operating characteristic for full-range circuit protection.
- 120 kA AC breaking capacity.
- Double visual operating indicator.
- Live gripping lugs.
- DIN NH ceramic construction.
Reliable Protection for High-Current Electrical Systems
The Mersen NH3GG50V630 is designed to interrupt excessive fault currents before they can damage cables, switchgear and connected electrical equipment. Its gG operating characteristic provides complete protection against both overload conditions and high-energy short circuits, making it suitable for demanding industrial power distribution systems.
The fuse link should be installed in a correctly rated NH Size 3 fuse base and replaced only by qualified personnel using an approved NH fuse puller. Its robust ceramic construction and high breaking capacity ensure dependable performance in industrial environments where reliability is critical.
Typical Applications
- Industrial power distribution systems.
- Main and sub-distribution switchboards.
- Motor control centres.
- Heavy-duty cable protection.
- Industrial machinery and OEM equipment.
- Commercial and infrastructure electrical installations.
