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MERSEN FUSE NH3 630KVA 400V GTR MI NH32GTR630KVA
Mersen NH32GTR630KVA DIN NH3 transformer fuse-link with 909 A rating, 400 V AC operation, gTr characteristic, centre indicator and live gripping lugs for 630 kVA transformer protection.
£63.75
Why Choose the Mersen NH32GTR630KVA Transformer Protection Fuse?
The Mersen NH32GTR630KVA is a high-performance DIN NH gTr transformer fuse-link engineered to protect low-voltage transformers against overloads and short-circuit faults. Designed specifically for 630 kVA transformers, this NH3 fuse features a 909 A rated current, 400 V AC operating voltage and a centre-mounted visual indicator, making it ideal for industrial power distribution and transformer feeder applications.
Manufactured by Mersen, a global leader in electrical protection solutions, the NH32GTR630KVA forms part of the specialised NH gTr transformer fuse range. Its time-current characteristic is specifically matched to transformer behaviour, allowing normal magnetising inrush currents while providing dependable protection during overload and fault conditions.
Featuring live gripping lugs, a robust NH blade-contact construction and a centre indicator, this fuse-link offers reliable installation and rapid identification following operation. It is suitable for switchboards, substations and industrial transformer installations requiring dependable low-voltage protection.
Key Advantages
- Designed specifically for 630 kVA transformer protection.
- 909 A rated current for large transformer installations.
- 400 V AC rated voltage.
- gTr operating characteristic optimised for transformer protection.
- Centre-mounted visual indicator for quick fuse status identification.
- Live gripping lugs for safe professional handling.
Key Features
- Manufacturer: Mersen
- Model: NH32GTR630KVA
- Product type: DIN NH transformer fuse-link
- Fuse size: NH3
- Rated current: 909 A
- Rated voltage: 400 V AC
- Transformer capacity: 630 kVA
- Operating category: gTr
- Centre-mounted visual indicator.
- Live gripping lugs.
- NH blade-contact construction.
- Suitable for industrial transformer protection.
Reliable Protection for Large Power Transformers
The Mersen NH32GTR630KVA has been developed specifically for protecting large low-voltage transformers. Its gTr operating characteristic withstands normal transformer energisation currents while providing rapid interruption of overloads and short circuits, helping maximise transformer reliability and minimise unnecessary fuse operation.
Its DIN NH blade-contact construction provides secure installation in compatible NH fuse bases, while the centre indicator enables maintenance personnel to quickly identify an operated fuse. Installation and replacement should always be carried out by suitably qualified personnel using an approved NH fuse puller.
Typical Applications
- 630 kVA low-voltage transformer protection.
- Industrial power distribution systems.
- Transformer feeder circuits.
- Electrical substations.
- Main LV switchboards.
- Industrial process plants.
Technical Specifications
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| Fuse Indication | Visual indicator | |
|---|---|---|
| Voltage | 400 V | |
| Device Type | Fuse link | |
| Fuse Type | NH (DIN) | |
| Fuse Size | NH3 | |
| Current | 909 A | |
| Manufacturer | Mersen | |
| Series | NH Fuse-links gTr 400 VAC | |
| Model | NH32GTR630KVA | |
| Product type | DIN NH transformer fuse-link | |
| Fuse size | NH3 | |
| Rated current | 909 A | |
| Rated operating voltage | 400 V AC | |
| Transformer rating | 630 kVA | |
| Operating category | gTr | |
| Indicator | Centre-mounted indicator | |
| Gripping lugs | Live gripping lugs | |
| Body width | 71 mm | |
| Current type | AC | |
| RoHS compliant | Yes | |
| HS Code | 85361090 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen NH32GTR630KVA used for?
It is designed to protect 630 kVA low-voltage transformers against overloads and short-circuit faults.
What is the rated current?
The NH32GTR630KVA has a rated current of 909 A.
What voltage is this fuse designed for?
This transformer fuse-link is rated for operation on systems up to 400 V AC.
What does the gTr operating category mean?
The gTr characteristic is specifically developed for transformer protection, allowing normal transformer inrush currents while providing effective overload and short-circuit protection.
What does the centre indicator provide?
The centre-mounted visual indicator allows maintenance personnel to quickly identify when the fuse has operated and requires replacement.
Trusted for Transformer Protection
Mersen NH transformer fuse-links are trusted worldwide by electrical engineers, OEMs and power distribution specialists for reliable transformer protection, high current limiting performance and dependable operation in demanding industrial installations.
