Why Choose the Mersen NH2GTR100KVA Transformer Fuse Link?
The Mersen NH2GTR100KVA is a specialised DIN NH gTr fuse link designed to provide reliable protection for low-voltage transformer circuits. Manufactured by Mersen, this NH Size 2 fuse link is rated for transformers with an apparent power of 100 kVA, helping protect transformer windings, conductors and associated distribution equipment against overloads and short-circuit faults.
Featuring a rated current of 144 A and a rated operating voltage of 400 V AC, the NH2GTR100KVA uses a full-range gTr operating characteristic developed specifically for transformer protection. Its time-current performance is coordinated with typical transformer loading and inrush behaviour, reducing the risk of unnecessary fuse operation during normal energisation.
Manufactured in the standard NH Size 2 format, the fuse link features silver-plated copper blade contacts, live gripping lugs and a centre-mounted operation indicator. Its ceramic body, 100 kA breaking capacity and standardised dimensions make it suitable for compatible NH fuse bases and switch-disconnectors in commercial and industrial power distribution systems.
Key Advantages
- Purpose-designed gTr fuse link for transformer protection.
- Suitable for transformers rated at approximately 100 kVA.
- 144 A rated current for coordinated transformer circuit protection.
- 400 V AC rated voltage.
- 100 kA breaking capacity for dependable fault interruption.
- Centre indicator provides convenient visual identification of fuse operation.
- Live gripping lugs support handling with an approved NH fuse replacement device.
Key Features
- Mersen NH fuse-links gTr 400 VAC series.
- NH Size 2.
- 100 kVA transformer rating.
- 144 A rated current.
- 400 V AC rated voltage.
- Full-range gTr transformer protection characteristic.
- 100 kA AC breaking capacity.
- Centre-mounted fuse operation indicator.
- Live gripping lugs.
- Silver-plated copper blade contacts.
- 40 mm body width.
Transformer circuits require fuses that can withstand temporary magnetising inrush currents while still responding reliably to sustained overloads and short-circuit faults. The Mersen NH2GTR100KVA uses a gTr characteristic specifically developed for this purpose, helping coordinate protection with the operating behaviour of a 100 kVA transformer.
Its high breaking capacity and current-limiting performance help reduce the thermal and mechanical stress created by severe electrical faults. When correctly selected and installed, the fuse can protect transformer windings, cables, switchgear and downstream equipment while helping minimise unplanned downtime.
Typical Applications
- Low-voltage transformer protection.
- Commercial building distribution systems.
- Industrial transformer feeder circuits.
- Electrical switchboards and distribution panels.
- Transformer secondary-side protection.
- Industrial and infrastructure power installations.
