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MERSEN FUSE NH3 315KVA 400V GTR MI NH32GTR315KVA
Mersen NH32GTR315KVA DIN NH3 gTr transformer protection fuse-link rated at 455 A and 400 V AC, designed to protect 315 kVA low-voltage distribution transformers.
£40.57
Why Choose the Mersen NH32GTR315KVA Transformer Protection Fuse?
The Mersen NH32GTR315KVA is a high-performance DIN NH gTr fuse-link engineered specifically to protect low-voltage distribution transformers against overloads and short circuits. Manufactured by Mersen, this NH3 fuse-link has a transformer-specific time-current characteristic that delivers reliable protection while accommodating the temporary magnetising inrush current produced when a transformer is energised.
The specialised gTr operating characteristic is matched to transformer protection requirements and supports effective selectivity with downstream gG fuse-links. Its robust ceramic body, silver-plated copper contacts and plain blade terminals provide dependable electrical and mechanical performance in demanding industrial power-distribution installations.
With a 455 A rated current, 400 V AC rated voltage and suitability for 315 kVA transformers, the NH32GTR315KVA is ideal for substations, switchboards and transformer protection panels. The fuse-link also provides a 100 kA breaking capacity and a top-mounted indicator for fast visual identification after operation.
Key Advantages
- Purpose-designed DIN NH gTr fuse-link for transformer protection.
- Suitable for protecting 315 kVA distribution transformers.
- 455 A rated current for high-capacity electrical installations.
- 400 V AC rated voltage for low-voltage distribution systems.
- 100 kA breaking capacity for dependable fault interruption.
- Integrated top indicator for rapid fuse status identification.
Key Features
- Mersen NH gTr 400 V AC fuse-link series.
- DIN NH Size 3 construction.
- 315 kVA transformer protection rating.
- 455 A rated current.
- 400 V AC IEC rated voltage.
- gTr operating characteristic.
- Top-mounted fuse operation indicator.
- Live gripping lugs and plain blade terminals.
Optimised Protection for Distribution Transformers
Mersen gTr fuse-links are designed around the operating behaviour of distribution transformers. Their time-current characteristic permits normal transformer energisation while providing full-range protection against sustained overloads and high short-circuit currents.
The NH32GTR315KVA can be loaded at up to 1.3 times its nominal current for a limited period while remaining capable of operating under sustained overcurrent conditions. This transformer-specific response helps improve selectivity, minimise unnecessary interruptions and protect valuable distribution equipment.
Typical Applications
- 315 kVA low-voltage distribution transformers.
- Industrial substations and transformer rooms.
- Commercial power-distribution systems.
- Main switchboards and electrical switchgear.
- Utility and infrastructure installations.
- OEM transformer protection panels.
Technical Specifications
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| Voltage | 400 V | |
|---|---|---|
| Device Type | Fuse link | |
| Fuse Type | NH (DIN) | |
| Fuse Size | NH3 | |
| Fuse Class | gTr | |
| Current | 455 A | |
| Manufacturer | Mersen | |
| Series | NH Fuse-links gTr 400 VAC | |
| Model | NH32GTR315KVA | |
| Associated catalogue number | NH32GTR315KVA-8 | |
| Manufacturer item number | S1028714A | |
| Product type | DIN NH transformer protection fuse-link | |
| Transformer rating | 315 kVA | |
| Rated current | 455 A | |
| Rated voltage | 400 V AC | |
| Operating characteristic | gTr | |
| Fuse size | NH3 | |
| Breaking capacity | 100 kA AC | |
| Current type | AC | |
| Mounting type | Clip mounting | |
| Indicator type | Top indicator | |
| Terminal type | Plain blades with live gripping lugs | |
| Terminal material | Silver-plated copper | |
| Body material | Ceramic | |
| Dimensions (L × W × H) | 150 × 71 × 89 mm | |
| Power dissipation at rated current | 25 W | |
| Weight | 1 kg | |
| EAN / UPC | 3605340534528 | |
| RoHS compliant | Yes | |
| HS Code | 85361090 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen NH32GTR315KVA used for?
This DIN NH gTr fuse-link is designed to protect low-voltage distribution transformers against overloads and short-circuit faults.
What transformer rating is supported by this fuse?
The NH32GTR315KVA is designed for the protection of transformers with a nominal capacity of 315 kVA.
What are the current and voltage ratings?
The fuse-link has a rated current of 455 A and is designed for operation at up to 400 V AC.
What does the gTr characteristic mean?
The gTr characteristic is specifically designed for transformer protection, accommodating normal transformer inrush current while providing overload and short-circuit protection.
How can an operated fuse be identified?
The NH32GTR315KVA includes an integrated top indicator that provides clear visual confirmation when the fuse-link has operated.
Trusted for Industrial Transformer Protection
Mersen NH gTr fuse-links are widely specified by electrical engineers, utilities and panel builders for reliable transformer protection, high fault interruption capability and dependable performance in demanding power-distribution systems.
