Why Choose the Mersen NH4A2GTR100KVA Transformer Protection Fuse?
The Mersen NH4A2GTR100KVA is a high-performance DIN NH gTr fuse link engineered specifically for protecting low-voltage distribution transformers. Designed to IEC standards, this NH Size 4a fuse provides a transformer-specific operating characteristic that withstands transformer magnetising inrush currents while delivering rapid disconnection under overload and fault conditions.
Part of the proven Mersen NH gTr 400 V transformer fuse range, the NH4A2GTR100KVA features a robust ceramic body, blade contacts, live gripping lugs and a centre indicator for fast identification following fuse operation. It is designed for installation in compatible NH4a fuse bases and switch-fuse assemblies used throughout industrial and commercial power distribution systems.
Designed to protect 100 kVA distribution transformers, this fuse has a 144 A rated current, a 400 V AC voltage rating and a 98 mm body width. It provides dependable transformer protection whilst helping maximise system reliability and service continuity.
Key Advantages
- Purpose-designed gTr transformer protection fuse link.
- Suitable for protecting 100 kVA distribution transformers.
- 144 A rated current for reliable transformer protection.
- 400 V AC operating voltage.
- Transformer-specific operating characteristic minimises nuisance operation.
- Centre indicator enables rapid identification of an operated fuse.
- Live gripping lugs support safe replacement using an approved NH fuse puller.
Key Features
- Mersen NH gTr transformer fuse series.
- Catalogue number: NH4A2GTR100KVA.
- Manufacturer part number: B1030516.
- NH Size 4a fuse link.
- Transformer rating: 100 kVA.
- 144 A rated current.
- 400 V AC rated voltage.
- gTr utilisation category.
- Centre fuse-operation indicator.
- Live gripping lugs with ceramic body construction.
The NH4A2GTR100KVA is specifically designed to protect low-voltage transformers by tolerating the high magnetising currents generated during energisation whilst responding rapidly to sustained overloads and short-circuit faults. This helps improve transformer reliability and reduces unnecessary fuse replacements.
Its robust NH construction, centre indicator and live gripping lugs make it a dependable solution for utilities, panel builders, transformer manufacturers and industrial electrical contractors requiring safe and reliable transformer protection.
Typical Applications
- 100 kVA low-voltage distribution transformers.
- Industrial power distribution systems.
- Commercial electrical installations.
- Transformer feeder circuits.
- Main LV switchboards.
- OEM transformer and switchboard assemblies.
