Why Choose the Mersen NH3GG69V400 NH Fuse-Link?
The Mersen NH3GG69V400 is a heavy-duty DIN NH size 3 gG fuse-link designed to provide dependable full-range protection for low-voltage power distribution systems, industrial switchgear and electrical installations. Rated at 400 A with a maximum operating voltage of 690 V AC and 250 V DC, it delivers reliable protection against overloads and short-circuit faults in demanding industrial environments.
Part of the trusted Mersen NH gG 690 V fuse-link range, the NH3GG69V400 features a ceramic insulating body, silver-plated blade contacts, live gripping lugs and a double indication system for rapid identification after fuse operation. Its high interrupting capacity and compliance with DIN NH standards make it ideal for protecting cables, busbars and critical electrical equipment.
Designed for installation in compatible NH fuse bases and switch-fuse disconnectors, the NH3GG69V400 offers reliable protection while maintaining compatibility with standard NH systems. Installation and replacement should only be carried out by qualified electrical professionals using approved NH fuse handling equipment.
Key Advantages
- General-purpose gG protection against overloads and short circuits.
- 400 A rated current for heavy-duty industrial distribution systems.
- 690 V AC / 250 V DC operating voltage.
- 120 kA AC breaking capacity for dependable fault interruption.
- Double indication system provides rapid fuse status identification.
- DIN NH size 3 construction for compatibility with standard NH fuse systems.
Key Features
- Mersen NH gG 690 V fuse-link series.
- DIN NH size 3.
- 400 A rated current.
- 690 V AC / 250 V DC rated voltage.
- General-purpose gG utilisation category.
- Double blown-fuse indication.
- Live, non-isolated gripping lugs.
- Silver-plated blade contacts.
- Ceramic insulating body.
- RoHS compliant construction.
Reliable Protection for Industrial Power Distribution
The Mersen NH3GG69V400 provides full-range protection by safely interrupting overload and short-circuit currents before damage can occur to cables, busbars, switchgear and connected electrical equipment. Its current-limiting design helps reduce thermal and mechanical stress throughout the electrical installation during fault conditions.
Manufactured in accordance with DIN NH standards, this fuse-link is compatible with standard NH fuse systems and should only be installed or replaced by qualified personnel using approved NH fuse handling equipment.
Typical Applications
- Industrial power distribution boards.
- Low-voltage switchgear assemblies.
- Cable and busbar protection.
- Main incoming electrical supplies.
- Switch-fuse disconnectors.
- Industrial manufacturing facilities.
- Commercial and utility electrical installations.
