Why Choose the Mersen NH4AGG69V500 NH Fuse-Link?
The Mersen D1054300 (NH4AGG69V500) is a high-capacity DIN NH size 4a gG fuse-link designed to provide comprehensive protection for low-voltage power distribution systems, industrial switchgear and electrical installations. Rated at 500 A with a maximum operating voltage of 690 V AC and 250 V DC, it delivers reliable full-range protection against both overloads and short-circuit faults.
Part of the trusted Mersen NH gG 690 V fuse-link range, the NH4AGG69V500 features a robust ceramic body, silver-plated blade contacts, non-isolated live gripping lugs and a centre-mounted blown fuse indicator. Its high breaking capacity and DIN NH compliance make it suitable for demanding industrial power distribution applications.
The D1054300 is designed for installation in compatible NH fuse bases and switch-fuse disconnectors where dependable circuit protection and long service life are essential. As with all NH fuse systems, installation and replacement should only be carried out by suitably qualified electrical professionals.
Key Advantages
- General-purpose gG protection against overloads and short circuits.
- 500 A current rating for heavy-duty industrial applications.
- 690 V AC / 250 V DC operation.
- 120 kA AC breaking capacity for dependable fault interruption.
- Centre-mounted indicator enables rapid fuse status identification.
- DIN NH size 4a construction for compatibility with standard NH fuse systems.
Key Features
- Mersen NH gG 690 V fuse-link series.
- DIN NH size 4a.
- 500 A rated current.
- 690 V AC / 250 V DC rated voltage.
- General-purpose gG utilisation category.
- Centre-mounted blown-fuse indicator.
- Live, non-isolated gripping lugs.
- Silver-plated blade contacts.
- Ceramic insulating body.
- RoHS compliant.
Reliable Protection for Industrial Power Distribution
The Mersen NH4AGG69V500 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 high fault-breaking capability makes it particularly suitable for heavy-duty industrial power distribution systems.
Designed in accordance with the DIN NH standard, this fuse-link is compatible with standard NH fuse systems and should only be installed or replaced by qualified personnel using the correct NH fuse handling equipment.
Typical Applications
- Industrial power distribution boards.
- Low-voltage switchgear assemblies.
- Main incoming electrical supplies.
- Cable and busbar protection.
- Switch-fuse disconnectors.
- Industrial manufacturing facilities.
- Commercial and utility electrical installations.
