Why Choose the Mersen V1054292 NH4a Fuse Link?
The Mersen V1054292, catalogue reference NH4AGG50V800, is a high-capacity DIN NH gG fuse link designed to protect low-voltage cables, electrical equipment and industrial distribution networks against overloads and short circuits. Its full-range gG operating characteristic enables it to interrupt fault currents from low-level overcurrents through to severe short-circuit conditions.
Manufactured by Mersen, this NH4a fuse link combines an 800 A current rating with voltage ratings of 500 V AC and 250 V DC. Its current-limiting performance helps reduce the thermal and electrodynamic stress imposed on conductors, switchgear and connected equipment during high-fault-current events.
The V1054292 features a durable ceramic body, silver-plated copper blade terminals, live gripping lugs and a clearly visible centre indicator. With a rated AC breaking capacity of 120 kA, it is suitable for demanding industrial switchboards, power distribution assemblies and other installations requiring dependable high-current circuit protection.
Key Advantages
- Full-range gG protection for cables and low-voltage networks.
- 800 A rated current for high-capacity electrical systems.
- Suitable for circuits operating at up to 500 V AC or 250 V DC.
- 120 kA AC breaking capacity for high-fault-current applications.
- Current-limiting operation helps reduce fault energy and equipment damage.
- Integrated centre indicator enables rapid fuse-status identification.
- Live gripping lugs support removal with an appropriate NH fuse puller.
- Robust ceramic body for dependable industrial performance.
Key Features
- Mersen NH4AGG50V800 fuse link.
- DIN NH4a fuse size.
- 800 A rated current.
- 500 V AC and 250 V DC rated voltage.
- Full-range gG fuse characteristic.
- 120 kA AC breaking capacity.
- Centre operating indicator.
- Live gripping lugs.
- Plain silver-plated copper blade terminals.
- Ceramic insulating body.
- Clip-mounted installation in a compatible NH fuse base.
- RoHS-compliant construction.
Reliable Protection for High-Current Electrical Systems
The Mersen V1054292 uses a full-range gG time-current characteristic to protect cables, conductors and general-purpose low-voltage equipment. It responds to both sustained overloads and high-level short circuits, allowing the fuse link to serve as the principal protection device in suitable electrical circuits.
During a severe fault, the fuse link limits the peak current and the amount of energy passed into the circuit. This helps reduce thermal damage to cables and limits the electrodynamic forces experienced by busbars, switchgear and other connected components. Installation and replacement must be undertaken by qualified electrical personnel using an approved NH fuse-handling device.
Typical Applications
- Industrial low-voltage distribution networks.
- High-current cable and conductor protection.
- Main switchboards and distribution boards.
- Industrial machinery power supplies.
- Commercial and infrastructure electrical systems.
- Busbar and feeder circuit protection.
