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MERSEN FUSE NH4A 100KVA 400V GTR NH4A2GTR100KVA
Mersen NH4A2GTR100KVA DIN NH Size 4a gTr transformer fuse link for 100 kVA transformers, rated 144 A and 400 V AC with live gripping lugs and centre indicator.
£101.62
Why Choose the Mersen NH4A2GTR100KVA Transformer Protection Fuse?
The Mersen NH4A2GTR100KVA is a high-performance DIN NH gTr fuse link engineered specifically for protecting low-voltage distribution transformers. Designed to IEC standards, this NH Size 4a fuse provides a transformer-specific operating characteristic that withstands transformer magnetising inrush currents while delivering rapid disconnection under overload and fault conditions.
Part of the proven Mersen NH gTr 400 V transformer fuse range, the NH4A2GTR100KVA features a robust ceramic body, blade contacts, live gripping lugs and a centre indicator for fast identification following fuse operation. It is designed for installation in compatible NH4a fuse bases and switch-fuse assemblies used throughout industrial and commercial power distribution systems.
Designed to protect 100 kVA distribution transformers, this fuse has a 144 A rated current, a 400 V AC voltage rating and a 98 mm body width. It provides dependable transformer protection whilst helping maximise system reliability and service continuity.
Key Advantages
- Purpose-designed gTr transformer protection fuse link.
- Suitable for protecting 100 kVA distribution transformers.
- 144 A rated current for reliable transformer protection.
- 400 V AC operating voltage.
- Transformer-specific operating characteristic minimises nuisance operation.
- Centre indicator enables rapid identification of an operated fuse.
- Live gripping lugs support safe replacement using an approved NH fuse puller.
Key Features
- Mersen NH gTr transformer fuse series.
- Catalogue number: NH4A2GTR100KVA.
- Manufacturer part number: B1030516.
- NH Size 4a fuse link.
- Transformer rating: 100 kVA.
- 144 A rated current.
- 400 V AC rated voltage.
- gTr utilisation category.
- Centre fuse-operation indicator.
- Live gripping lugs with ceramic body construction.
Reliable Protection for Distribution Transformers
The NH4A2GTR100KVA is specifically designed to protect low-voltage transformers by tolerating the high magnetising currents generated during energisation whilst responding rapidly to sustained overloads and short-circuit faults. This helps improve transformer reliability and reduces unnecessary fuse replacements.
Its robust NH construction, centre indicator and live gripping lugs make it a dependable solution for utilities, panel builders, transformer manufacturers and industrial electrical contractors requiring safe and reliable transformer protection.
Typical Applications
- 100 kVA low-voltage distribution transformers.
- Industrial power distribution systems.
- Commercial electrical installations.
- Transformer feeder circuits.
- Main LV switchboards.
- OEM transformer and switchboard assemblies.
Technical Specifications
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| Fuse Indication | Visual indicator | |
|---|---|---|
| Current | 144 A | |
| Voltage | 400 V | |
| Device Type | Fuse link | |
| Fuse Type | NH (DIN) | |
| Fuse Size | NH4a | |
| Manufacturer | Mersen | |
| Series | NH gTr 400 V Transformer Fuse Links | |
| Model | NH4A2GTR100KVA | |
| Manufacturer reference | B1030516 | |
| Product type | DIN NH transformer fuse link | |
| Fuse category | gTr | |
| NH size | NH4a | |
| Transformer nominal capacity | 100 kVA | |
| Rated current | 144 A | |
| Rated voltage | 400 V AC | |
| Indicator | Centre indicator | |
| Gripping lugs | Live gripping lugs | |
| Body width | 98 mm | |
| Approximate weight | 2.2 kg | |
| Typical mounting | NH4a fuse base | |
| RoHS compliant | Yes |
Frequently Asked Questions
What is the Mersen NH4A2GTR100KVA used for?
It is specifically designed to protect 100 kVA low-voltage distribution transformers against overloads and high fault currents.
What transformer size is this fuse intended for?
The NH4A2GTR100KVA is designed for transformers with a nominal capacity of 100 kVA.
What are the voltage and current ratings?
This fuse is rated at 400 V AC with a 144 A current rating.
What does the gTr classification mean?
The gTr utilisation category is specifically developed for transformer protection, allowing transformer energisation currents whilst providing dependable fault protection.
What is the purpose of the centre indicator?
The centre indicator provides a clear visual indication after fuse operation, allowing maintenance personnel to identify and replace the fuse quickly and safely.
Trusted by Power Distribution Professionals Worldwide
Mersen NH gTr transformer fuse links are trusted by utilities, transformer manufacturers, panel builders and electrical engineers for dependable protection of low-voltage distribution transformers and critical power infrastructure.
