Mersen NH4A2GTR200KVA DIN NH size 4a2 gTr transformer fuse-link rated for 200 kVA transformers, 289 A and 400 V AC with centre indicator and live gripping lugs.
£169.36
The Mersen NH4A2GTR200KVA is a heavy-duty DIN NH size 4a2 gTr fuse-link developed specifically for protecting 200 kVA low-voltage distribution transformers. Designed for operation on 400 V AC systems, it provides reliable transformer protection while withstanding the high magnetising inrush currents that occur during transformer energisation.
The specialised gTr operating characteristic is optimised for transformer applications, providing dependable protection against short circuits without nuisance operation during normal transformer energisation. This helps maximise transformer availability while ensuring effective protection of connected equipment.
Manufactured to the DIN NH standard, the NH4A2GTR200KVA features a robust ceramic body, silver-plated blade contacts, live gripping lugs and a centre-mounted blown fuse indicator. Its standard NH4a2 construction allows installation in compatible NH fuse bases and transformer switch-fuse assemblies by qualified electrical professionals.
Distribution transformers generate significant magnetising currents when energised. The Mersen gTr operating characteristic is engineered specifically for these applications, allowing normal energisation currents to pass while providing dependable interruption of damaging short-circuit faults.
The NH4A2GTR200KVA is designed for installation in compatible NH fuse bases and transformer switch-fuse assemblies. Installation and replacement should only be carried out by suitably qualified electrical professionals using approved NH fuse handling equipment.
| Current | 4 A |
|---|---|
| Voltage | 400 V |
| Manufacturer | Mersen |
| Series | NH gTr 400 V Transformer Fuse-Links |
| Model | NH4A2GTR200KVA |
| Manufacturer Part Number | D1030518 |
| Product type | NH transformer protection fuse-link |
| Fuse utilisation category | gTr |
| Fuse size | NH4a2 |
| Transformer rating | 200 kVA |
| Rated current | 289 A |
| Rated voltage | 400 V AC |
| Voltage type | AC |
| Indicator | Centre indicator |
| Gripping lugs | Live gripping lugs |
| Body width | approx. 98 mm |
| Body material | Ceramic |
| Compliance | RoHS compliant |
| EAN | 3605340535518 |
It is specifically designed to protect 200 kVA low-voltage distribution transformers against short-circuit faults while accommodating transformer energisation currents.
The NH4A2GTR200KVA is designed for transformers with a nominal rating of 200 kVA.
The fuse-link has a rated current of 289 A.
The gTr characteristic is specifically optimised for transformer protection, allowing normal magnetising inrush currents while providing dependable fault protection.
Yes. The NH4A2GTR200KVA features a centre-mounted indicator to provide clear visual confirmation when the fuse has operated.
Mersen NH gTr transformer fuse-links are trusted by electrical engineers, panel builders and utility providers for dependable transformer protection, excellent selectivity and reliable performance in low-voltage distribution systems.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...