Why Choose the Mersen NH3GG50V800 NH Fuse Link?
The Mersen NH3GG50V800 is a heavy-duty DIN NH gG fuse link designed to provide full-range protection for low-voltage electrical distribution systems, industrial switchgear and high-current power circuits. Manufactured by Mersen, this NH3 fuse link protects cables, conductors and electrical equipment against both overloads and high prospective short-circuit currents.
Part of the trusted Mersen NH gG 500 V AC fuse range, the NH3GG50V800 features live gripping lugs and a double indication system, allowing maintenance personnel to quickly identify an operated fuse and safely replace it using an approved NH fuse puller. Its current-limiting design helps reduce thermal and mechanical stresses on switchgear, busbars and connected equipment during electrical faults.
With a rated current of 800 A, a 500 V AC operating voltage, a 250 V DC rating and a high 120 kA AC breaking capacity, the NH3GG50V800 is ideal for industrial switchboards, power distribution systems and heavy-duty commercial installations requiring dependable circuit protection.
Key Advantages
- Full-range gG protection for cables and electrical equipment.
- 800 A rated current for high-capacity industrial distribution systems.
- 500 V AC and 250 V DC rated voltage.
- 120 kA AC breaking capacity for reliable fault interruption.
- Current-limiting performance helps reduce fault energy.
- Double indication system enables rapid fuse-status identification.
- Live gripping lugs support safe fuse replacement.
- Designed to IEC and DIN NH standards.
Key Features
- Mersen NH gG fuse link series.
- NH3 DIN fuse size.
- 800 A rated current.
- 500 V AC rated voltage.
- 250 V DC rated voltage.
- Full-range gG operating characteristic.
- 120 kA AC breaking capacity.
- Double operating indicator.
- Live gripping lugs.
- Ceramic fuse body.
- Body width approximately 71.9 mm.
- Clip mounting in compatible NH fuse bases.
Reliable Protection for Industrial Distribution Systems
The Mersen NH3GG50V800 incorporates a full-range gG operating characteristic, allowing it to protect circuits against sustained overloads and severe short-circuit faults. This makes it suitable as a standalone protective device for cables, conductors and general-purpose electrical equipment in demanding industrial applications.
Its current-limiting performance helps minimise thermal and electrodynamic stress throughout the electrical installation, improving protection for switchgear, busbars, wiring and connected equipment while enhancing overall system reliability.
Typical Applications
- Industrial switchboards.
- High-current power distribution systems.
- Cable and feeder protection.
- Commercial electrical installations.
- Industrial machinery.
- Infrastructure and utility installations.
