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MERSEN FUSE NH3C 250KVA 400V GTR TI NH3GTR250KVA-8
Mersen NH3GTR250KVA-8 DIN NH3 gTr transformer protection fuse-link rated at 361 A and 400 V AC for 250 kVA transformers, with a top indicator and live gripping lugs.
£30.92
Why Choose the Mersen NH3GTR250KVA-8 Transformer Protection Fuse-Link?
The Mersen NH3GTR250KVA-8 is a high-performance DIN NH gTr fuse-link specifically designed to protect low voltage distribution transformers against overloads and short-circuit faults. As part of the established Mersen NH gTr 400 V AC fuse-link range, it features a time-current characteristic adapted to transformer operating behaviour for reliable protection and improved installation continuity.
This NH3 fuse-link combines high current-limiting performance with a top-mounted indicator and live gripping lugs. The indicator allows qualified personnel to identify an operated fuse quickly, while the standard NH blade-contact design supports installation in compatible NH fuse bases and switch-fuse equipment.
Rated for the protection of 250 kVA transformers, the NH3GTR250KVA-8 has a nominal current of 361 A and an operating voltage rating of 400 V AC. Its gTr characteristic is designed to withstand normal transformer operating conditions while providing precise interruption during sustained overloads and electrical faults.
Key Advantages
- Purpose-designed gTr fuse-link for transformer protection.
- Suitable for protecting 250 kVA transformers.
- 361 A rated current for high-capacity distribution systems.
- 400 V AC rated operating voltage.
- Transformer-adapted time-current characteristic helps prevent unnecessary interruptions.
- Top-mounted indicator provides clear fuse operation status.
Key Features
- Mersen NH gTr transformer protection series.
- Catalogue number: NH3GTR250KVA-8.
- 250 kVA transformer rating.
- 361 A rated current.
- 400 V AC IEC rated voltage.
- DIN NH Size 3 construction.
- gTr full-range transformer protection characteristic.
- Top-mounted fuse operation indicator.
- Live gripping lugs.
- High current-limiting performance.
Reliable Protection for Distribution Transformers
The Mersen NH3GTR250KVA-8 uses a gTr operating characteristic developed specifically for transformer protection. This characteristic accommodates normal transformer loading and temporary operating conditions while providing precise interruption during sustained overloads and short-circuit faults.
Its current-limiting performance helps reduce the thermal and mechanical energy released during a fault, protecting transformers, switchgear, conductors and connected distribution equipment. The fuse-link also provides effective selectivity with suitably coordinated gG fuse-links elsewhere in the installation.
Typical Applications
- 250 kVA low voltage distribution transformers.
- Industrial transformer feeder circuits.
- Commercial and industrial substations.
- Low voltage switchboards.
- Power distribution panels.
- Transformer protection assemblies and fuse-switch equipment.
Technical Specifications
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| Voltage | 400 V | |
|---|---|---|
| Device Type | Fuse link | |
| Fuse Type | NH (DIN) | |
| Fuse Size | NH3 | |
| Fuse Class | gTr | |
| Current | 361 A | |
| Manufacturer | Mersen | |
| Series | NH Fuse-Links gTr 400 V AC | |
| Model | NH3GTR250KVA-8 | |
| Manufacturer part number | R1028713A | |
| Product type | DIN NH transformer protection fuse-link | |
| Fuse size | NH3 | |
| Transformer capacity | 250 kVA | |
| Rated current | 361 A | |
| Rated operating voltage | 400 V AC | |
| Operating characteristic | gTr | |
| Current type | AC | |
| Indicator position | Top indicator | |
| Gripping lug type | Live gripping lugs | |
| Body width | 50 mm | |
| Mounting system | Compatible DIN NH fuse base | |
| EAN | 3605340534504 | |
| Compliance | RoHS compliant | |
| HS Code | 85361090 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen NH3GTR250KVA-8 used for?
It is designed to protect 250 kVA distribution transformers against sustained overloads and short-circuit faults.
What is the rated current of this fuse-link?
The NH3GTR250KVA-8 has a rated current of 361 A.
What voltage is the NH3GTR250KVA-8 rated for?
This transformer protection fuse-link is rated for operation at 400 V AC.
What does the gTr characteristic mean?
The gTr characteristic is designed specifically for transformer protection, providing an operating curve matched to transformer loading, overload and fault behaviour.
What type of indicator does this fuse-link have?
The NH3GTR250KVA-8 has a top-mounted indicator that provides visible confirmation when the fuse-link has operated.
Trusted by Electrical Professionals Worldwide
Mersen NH gTr fuse-links are trusted by utilities, panel builders and electrical engineers for dependable transformer protection, high current limitation and reliable performance in industrial power distribution systems.
