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MERSEN FUSE NH4A 500KVA 400V GTR TI NH42GTR500KVA-8
Mersen NH42GTR500KVA-8 DIN NH4a gTr fuse link with 722 A current rating and 400 V AC voltage for reliable 500 kVA distribution transformer protection.
£119.11
Why Choose the Mersen NH42GTR500KVA-8 NH Fuse Link?
The Mersen NH42GTR500KVA-8 is a robust DIN NH gTr fuse link engineered to provide dependable protection for low voltage distribution transformers in demanding industrial and commercial power systems. Manufactured by Mersen, this NH4a fuse is specifically designed to accommodate transformer energisation currents while delivering reliable overload and short circuit protection.
As part of the proven Mersen NH gTr fuse series, this fuse incorporates a top operating indicator and live gripping lugs, allowing maintenance personnel to quickly identify blown fuses and safely replace them. Its high breaking capacity and transformer-specific operating characteristic make it ideal for protecting valuable electrical assets.
With a 722 A current rating, 400 V AC operating voltage and suitability for 500 kVA transformers, the NH42GTR500KVA-8 is an excellent choice for industrial switchgear, substations and power distribution equipment requiring reliable transformer protection.
Key Advantages
- Designed specifically for distribution transformer protection.
- 722 A rated current suitable for 500 kVA transformer installations.
- 400 V AC rated voltage for low voltage distribution systems.
- NH4a DIN standard fuse for industrial applications.
- Integrated top blown-fuse indicator.
- Live gripping lugs enable safer fuse handling.
- Excellent current limiting and high breaking capacity.
- Reliable protection against overloads and short circuits.
Key Features
- Mersen NH gTr transformer protection fuse.
- 722 A current rating.
- 400 V AC rated voltage.
- Suitable for 500 kVA transformers.
- DIN NH4a fuse size.
- Top operating indicator.
- Live gripping lugs.
- High breaking capacity.
- Designed for industrial power distribution.
Reliable Protection for Distribution Transformers
The Mersen NH gTr fuse range has been developed specifically for transformer protection applications. Its carefully optimised time-current characteristic allows transformer magnetising inrush currents without nuisance operation while still providing rapid fault clearance during overload and short circuit conditions.
Designed for industrial facilities, utilities and commercial electrical installations, the NH42GTR500KVA-8 helps improve system reliability, reduce downtime and protect valuable transformer assets throughout their operational life.
Typical Applications
- Distribution transformer protection.
- Industrial switchboards.
- Commercial electrical distribution.
- Utility substations.
- Power distribution equipment.
- OEM electrical panels.
Technical Specifications
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| Fuse Indication | Visual indicator | |
|---|---|---|
| Current | 722 A | |
| Voltage | 400 V | |
| Device Type | Fuse link | |
| Fuse Type | NH (DIN) | |
| Fuse Size | NH4a | |
| Fuse Class | gTr | |
| Manufacturer | Mersen | |
| Series | NH gTr Fuse Links | |
| Model | NH42GTR500KVA-8 | |
| Product type | DIN NH transformer protection fuse link | |
| Fuse characteristic | gTr | |
| Fuse size | NH4a | |
| Rated current | 722 A | |
| Rated voltage | 400 V AC | |
| Transformer capacity | 500 kVA | |
| Indicator | Top indicator | |
| Contact type | Live gripping lugs | |
| Body width | 98 mm | |
| Weight | Approx. 2.2 kg | |
| Mounting | NH fuse base | |
| HS Code | 85361090 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen NH42GTR500KVA-8 used for?
This fuse link is specifically designed to protect low voltage distribution transformers against overload and short circuit faults.
What transformer size is this fuse suitable for?
The NH42GTR500KVA-8 is designed for protecting transformers with a nominal capacity of approximately 500 kVA.
What voltage is this fuse rated for?
This fuse has a rated operating voltage of 400 V AC.
What does the gTr characteristic provide?
The gTr characteristic is specifically engineered for transformer protection, allowing transformer inrush currents while providing dependable overload and short circuit protection.
What is the purpose of the top indicator?
The integrated top indicator provides a clear visual indication when the fuse has operated, helping maintenance personnel identify and replace blown fuses quickly.
Trusted for Industrial Transformer Protection
Mersen NH gTr fuse links are trusted worldwide by electrical engineers, panel builders and utility operators for dependable transformer protection, high fault interruption capability and long-term reliability in demanding power distribution systems.
