Why Choose the Mersen NH32GTR63KVA-8 Transformer Fuse-Link?
The Mersen NH32GTR63KVA-8 is a high-performance NH3 gTr fuse-link designed specifically for the protection of low-voltage transformers. Manufactured to the DIN NH standard, it combines a transformer-matched time-current characteristic with a high breaking capacity to provide dependable protection against overloads and short-circuit faults.
This fuse-link is rated for a 63 kVA transformer, with a nominal current rating of 63 A and an operating voltage of up to 400 V AC. Its gTr operating class is specially adapted to transformer load characteristics, helping accommodate normal energisation currents while providing selective fault protection alongside downstream gG fuse-links.
The NH32GTR63KVA-8 features live gripping lugs, silver-plated copper blade terminals and a clearly visible top-mounted indicator. Its robust ceramic body and 100 kA AC breaking capacity make it suitable for demanding industrial and commercial power distribution installations where reliable transformer protection is essential.
Key Advantages
- Specially designed gTr fuse characteristic for transformer protection.
- Suitable for transformers rated at approximately 63 kVA.
- 63 A current rating for coordinated low-voltage protection.
- 400 V AC rated voltage for industrial distribution systems.
- High 100 kA breaking capacity for dependable short-circuit protection.
- Top-mounted indicator provides straightforward visual fuse status identification.
- Robust ceramic construction supports reliable operation in demanding installations.
Key Features
- Mersen NH gTr transformer fuse-link series.
- NH3 fuse size manufactured to the DIN NH format.
- 63 kVA transformer rating.
- 63 A rated current.
- 400 V AC rated operational voltage.
- gTr operating characteristic optimised for transformer protection.
- 100 kA maximum AC breaking capacity.
- Integrated top-mounted fuse indicator.
- Live gripping lugs for use with a suitable LV HRC fuse puller.
- Silver-plated copper plain-blade terminals.
- Durable ceramic insulating body.
Transformer fuse-links must tolerate normal transformer energisation currents while responding reliably to sustained overloads and short-circuit faults. The gTr time-current characteristic of the Mersen NH32GTR63KVA-8 is specially matched to transformer behaviour, helping to prevent unnecessary operation during normal start-up conditions.
The fuse-link also supports effective selectivity with downstream gG fuse-links, helping isolate faults at the appropriate point in the electrical installation. Its high breaking capacity and robust NH construction make it a dependable protection component for transformer-fed industrial and commercial distribution systems.
Typical Applications
- Protection of low-voltage transformers rated around 63 kVA.
- Industrial power distribution boards.
- Commercial electrical distribution systems.
- Transformer secondary-side protection.
- Machinery and production facility power supplies.
- Electrical switchboards and NH fuse assemblies.
- Infrastructure and building services installations.
