Why Choose the Mersen NH32GTR315KVA-8 Transformer Protection Fuse?
The Mersen NH32GTR315KVA-8 is a specialist NH gTr low voltage fuse link engineered to protect distribution transformers against overloads and short-circuit faults. Part of the established Mersen NH transformer fuse range, its operating characteristic is specifically matched to transformer behaviour, allowing normal energisation currents while providing dependable protection against damaging overcurrents.
Designed for transformers with a nominal capacity of 315 kVA, this fuse link has a 455 A rated current and operates on 400 V AC electrical systems. Its transformer-specific time-current response supports effective protection without unnecessary operation during normal magnetising inrush conditions.
The NH32GTR315KVA-8 features an NH Size 3 body, live gripping lugs and a top-mounted operating indicator. Its high breaking capacity and robust DIN NH construction make it suitable for transformer feeders, industrial distribution boards and commercial power systems where dependable electrical protection is essential.
Key Advantages
- Purpose-designed gTr fuse link for transformer protection.
- Matched to transformers with a nominal capacity of 315 kVA.
- 455 A rated current for high-capacity transformer circuits.
- 400 V AC rated operating voltage.
- Transformer-specific characteristic accommodates normal energisation inrush currents.
- High breaking capacity provides dependable interruption of severe electrical faults.
Key Features
- Mersen NH gTr transformer fuse-link series.
- NH Size 3 construction.
- 455 A rated current.
- 400 V AC rated voltage.
- 315 kVA transformer nominal capacity.
- gTr operating characteristic for transformer protection.
- 100 kA AC breaking capacity.
- Top-mounted visual operating indicator.
- Live gripping lugs for use with a suitable NH fuse puller.
- DIN NH blade-contact design.
The gTr operating characteristic is specifically designed around the thermal and electrical behaviour of distribution transformers. It permits normal transformer magnetising inrush currents while responding accurately to sustained overloads and high-energy short circuits that could otherwise damage transformer windings, cables and associated switchgear.
The Mersen NH32GTR315KVA-8 also supports effective selectivity with downstream gG fuse links when the electrical protection system is correctly designed. Its top indicator provides a clear visual signal after operation, helping maintenance personnel locate faults and restore the transformer circuit efficiently.
Typical Applications
- Protection of 315 kVA distribution transformers.
- Industrial transformer feeder circuits.
- Commercial building power distribution.
- Low voltage switchboards and distribution panels.
- Manufacturing and process plant electrical systems.
- Utility, infrastructure and renewable energy installations.
