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MERSEN FUSE NH2 250KVA 400V GTR TI NH22GTR250KVA-8
Mersen NH22GTR250KVA-8 NH2 gTr transformer fuse-link rated at 361 A and 400 V AC for protection of 250 kVA distribution transformers.
£19.23
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.
Reliable Protection for Distribution Transformers
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.
Technical Specifications
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| Fuse Indication | Visual indicator | |
|---|---|---|
| Voltage | 400 V | |
| Device Type | Fuse link | |
| Fuse Type | NH (DIN) | |
| Fuse Size | NH2 | |
| Fuse Class | gTr | |
| Current | 361 A | |
| Manufacturer | Mersen | |
| Series | NH Fuse-links gTr 400 VAC | |
| Model | NH22GTR250KVA-8 | |
| Item number | G1028704 | |
| EAN | 3605340545159 | |
| Product type | DIN NH transformer fuse-link | |
| Fuse size | NH2 | |
| Rated current | 361 A | |
| Transformer rating | 250 kVA | |
| Rated voltage | 400 V AC | |
| Operating characteristic | gTr | |
| Power dissipation | 21 W | |
| Body width | 50 mm | |
| Weight | Approx. 0.5 kg | |
| Indicator | Top indicator | |
| Terminal type | Live gripping lugs | |
| Compliance | IEC / RoHS | |
| HS Code | 85361090 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen NH22GTR250KVA-8 used for?
The NH22GTR250KVA-8 is specifically designed to protect 250 kVA distribution transformers against overloads and short-circuit faults.
What transformer size is this fuse intended for?
This model is designed for transformers with a nominal rating of 250 kVA.
What is the rated current of the fuse-link?
The NH22GTR250KVA-8 has a 361 A rated current.
What does the gTr characteristic mean?
The gTr characteristic is specially developed for transformer protection, allowing the fuse to withstand transformer energisation currents while providing reliable protection against overloads and faults.
Why is a transformer fuse different from a standard gG fuse?
Transformer fuse-links are designed with a time/current characteristic matched to transformer operation, reducing nuisance operation during energisation whilst maintaining effective fault protection.
Trusted by Power Distribution Professionals
Mersen NH gTr transformer fuse-links are trusted by utilities, panel builders and industrial engineers worldwide for dependable transformer protection, excellent selectivity and long-term reliability in demanding power distribution applications.
