Why Choose the Mersen NH3GG69V250 NH Fuse?
The Mersen NH3GG69V250 is a high-performance NH gG industrial fuse link designed to provide full-range protection against overloads and short-circuit faults in low-voltage electrical distribution systems. Manufactured to DIN NH standards, this fuse link is suitable for protecting cables, conductors, switchgear and connected equipment in demanding industrial and commercial installations.
As part of the established Mersen NH gG 690 V AC fuse-link series, the NH3GG69V250 combines dependable current limitation with a high breaking capacity. Its gG operating characteristic allows it to interrupt fault currents ranging from sustained overloads to severe short circuits, helping reduce thermal and electrodynamic stress on electrical equipment.
With a rated current of 250 A, a rated voltage of 690 V AC and 250 V DC and an NH3 fuse size, this fuse link is suitable for industrial switchboards, distribution panels and heavy-duty electrical systems. Its double indication system and live gripping tags support convenient inspection and replacement by qualified electrical personnel.
Key Advantages
- Dependable NH gG fuse link for full-range circuit protection.
- 250 A rated current for demanding distribution applications.
- 690 V AC and 250 V DC voltage ratings.
- Protects against both overloads and short-circuit faults.
- 80 kA AC breaking capacity for reliable fault interruption.
- Double indicator enables rapid identification after fuse operation.
Key Features
- Mersen NH gG 690 V AC fuse-link series.
- NH3 fuse size.
- 250 A rated current.
- 690 V AC rated voltage.
- 250 V DC rated voltage.
- gG full-range utilisation category.
- Double fuse operation indicator.
- Live gripping tags and plain blade terminals.
Reliable Protection for Industrial Power Distribution
The Mersen NH3GG69V250 provides full-range protection by safely interrupting sustained overload currents and high short-circuit currents. Its current-limiting performance helps reduce the energy transmitted during a fault, protecting cables, conductors, switchgear and connected electrical equipment from avoidable damage.
The robust NH3 construction is suitable for high-current installations requiring dependable protection at elevated operating voltages. Its ceramic body provides strong thermal and mechanical durability, while the double indicator helps maintenance personnel identify an operated fuse quickly during inspection and fault finding.
Typical Applications
- Industrial electrical distribution boards.
- Heavy-duty power distribution systems.
- Cable and conductor protection.
- Electrical switchboards and switchgear.
- Manufacturing and processing equipment.
- Commercial and infrastructure installations.
