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MERSEN FUSE NH2 125KVA 400V GTR NH22GTR125KVA-8
Mersen NH22GTR125KVA-8 DIN NH2 gTr transformer fuse-link rated at 180 A and 400 V AC for protection of 125 kVA low voltage transformers, featuring a top indicator and live gripping lugs.
£17.30
Why Choose the Mersen NH22GTR125KVA-8 Transformer Fuse-Link?
The Mersen NH22GTR125KVA-8 is a specialised DIN NH gTr transformer fuse-link designed to provide reliable protection for low voltage distribution transformers. Manufactured by Mersen, this NH2 size fuse-link is engineered to withstand normal transformer magnetising inrush currents while interrupting damaging short-circuit currents.
Part of the established Mersen NH gTr 400 V AC fuse-link range, the NH22GTR125KVA-8 features live gripping lugs and a top-mounted indicator. These features support professional handling with a suitable NH fuse replacement device and enable rapid visual identification when the fuse-link has operated.
Designed for protecting 125 kVA transformers, the NH22GTR125KVA-8 has a rated current of approximately 180 A and is intended for use on 400 V AC systems. Its current-limiting construction helps reduce thermal and mechanical stress on transformers, cables and associated switchgear during fault conditions.
Key Advantages
- Purpose-designed for low voltage transformer protection.
- Suitable for 125 kVA transformers.
- 180 A rated current for 400 V AC transformer circuits.
- gTr operating characteristic accommodates transformer energisation currents.
- Current-limiting performance helps reduce fault energy and equipment damage.
- Top indicator provides clear visual fuse status indication.
- Live gripping lugs support handling with an appropriate NH fuse puller.
Key Features
- Mersen NH gTr transformer fuse-link series.
- 125 kVA transformer rating.
- 180 A rated current.
- 400 V AC rated operating voltage.
- DIN NH2 size construction.
- gTr transformer protection characteristic.
- Top-mounted fuse status indicator.
- Live gripping lugs.
- Current-limiting fuse element design.
- Durable ceramic insulating body.
Reliable Protection for Low Voltage Transformers
The Mersen NH22GTR125KVA-8 is engineered around the operating requirements of distribution transformers. When a transformer is energised, it can draw a temporary magnetising current substantially higher than its normal operating current. The specialised gTr characteristic allows this expected inrush to pass without unnecessary fuse operation.
During a genuine short-circuit fault, the fuse-link rapidly interrupts the excessive current and limits the energy passed into the protected circuit. This helps protect transformer windings, cables, busbars and switchgear while reducing the likelihood of extensive equipment damage and prolonged system downtime.
Typical Applications
- 125 kVA low voltage distribution transformers.
- Industrial transformer protection.
- Commercial power distribution systems.
- Low voltage switchboards.
- Transformer feeder panels.
- OEM electrical distribution equipment.
Technical Specifications
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| Fuse Indication | Visual indicator | |
|---|---|---|
| Voltage | 400 V | |
| Device Type | Fuse link | |
| Fuse Type | NH (DIN) | |
| Fuse Size | NH2 | |
| Fuse Class | gTr | |
| Current | 180 A | |
| Manufacturer | Mersen | |
| Series | NH gTr 400 V AC Fuse-Links | |
| Model | NH22GTR125KVA-8 | |
| Product type | DIN NH transformer fuse-link | |
| Transformer rating | 125 kVA | |
| Rated current | 180 A | |
| Rated voltage | 400 V AC | |
| Fuse size | NH2 | |
| Operating class | gTr | |
| Current type | AC | |
| Indicator | Top indicator | |
| Gripping lugs | Live gripping lugs | |
| Mounting system | DIN NH plug-in fuse system | |
| Body material | Ceramic | |
| Application | Low voltage transformer protection | |
| Installation | For handling by qualified electrical personnel |
Frequently Asked Questions
What is the Mersen NH22GTR125KVA-8 used for?
It is a DIN NH gTr fuse-link designed to protect 125 kVA low voltage transformers against damaging short-circuit currents.
What is the rated current of this fuse-link?
The Mersen NH22GTR125KVA-8 has a rated current of approximately 180 A.
What voltage is this transformer fuse designed for?
The fuse-link is designed for transformer circuits operating at up to 400 V AC.
What does the gTr operating class mean?
gTr fuse-links are designed specifically for transformer protection. They tolerate normal transformer magnetising inrush currents while providing reliable protection against short circuits.
What is the purpose of the top indicator?
The top indicator provides a clear visual indication when the fuse-link has operated, helping maintenance personnel locate and replace the affected fuse quickly.
Trusted for Transformer Protection
Mersen NH gTr fuse-links are widely used by electrical engineers, panel builders and industrial maintenance teams for reliable transformer protection, effective current limitation and dependable operation in low voltage power distribution systems.
