Why Choose the Mersen NH22GTR250KVA-8 Transformer Protection Fuse-Link?
The Mersen NH22GTR250KVA-8 is a specialist DIN NH gTr fuse-link engineered specifically for the protection of distribution transformers in low-voltage electrical installations. As part of Mersen's NH gTr 400 V AC transformer fuse range, it provides a time/current characteristic carefully matched to transformer inrush currents while maintaining dependable protection against overloads and short-circuit faults.
Unlike standard gG fuse-links, the gTr characteristic is optimised for transformer applications, allowing the fuse to withstand normal transformer energisation currents while providing rapid interruption under fault conditions. This helps minimise nuisance operation whilst maintaining excellent equipment protection and selectivity with downstream protection devices.
Designed for 250 kVA transformers, the NH22GTR250KVA-8 has a 361 A rated current, 400 V AC operating voltage and NH2 size with a top indicator and live gripping lugs, making it ideal for industrial substations, transformer feeders, switchboards and utility installations.
Key Advantages
- Designed specifically for distribution transformer protection.
- Matched to 250 kVA transformer applications.
- 361 A rated current.
- 400 V AC rated voltage.
- gTr characteristic reduces nuisance operation during transformer energisation.
- High breaking capacity for dependable fault interruption.
Key Features
- Mersen NH gTr transformer fuse-link series.
- Catalogue number: NH22GTR250KVA-8.
- Item number: G1028704.
- NH2 fuse size.
- 361 A rated current.
- 400 V AC rated voltage.
- Suitable for 250 kVA transformers.
- gTr transformer protection characteristic.
- Top indicator for rapid fuse status identification.
- Live gripping lugs.
- Ceramic high rupturing capacity construction.
- RoHS compliant.
The Mersen NH22GTR250KVA-8 has been developed specifically for transformer protection, with a time/current characteristic that accommodates transformer magnetising inrush currents whilst providing dependable protection during overload and fault conditions. This improves operational reliability compared with standard fuse characteristics.
Its high current-limiting capability and excellent selectivity with downstream gG fuse-links make it well suited to industrial power distribution systems, substations and transformer-fed installations where dependable continuity of service is essential.
Typical Applications
- Distribution transformer protection.
- Industrial substations.
- Main LV switchboards.
- Transformer feeder circuits.
- Utility power distribution.
- Commercial and industrial electrical installations.
