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MERSEN FUSE NH3C 50KVA 400V GTR SGL MI NH3GTR50KVA-1
Mersen NH3GTR50KVA-1 NH Size 3 gTr transformer protection fuse link rated at 72 A and 400 V AC for 50 kVA distribution transformers with isolated gripping lugs and centre indicator.
£40.96
Why Choose the Mersen NH3GTR50KVA-1 Transformer Protection Fuse?
The Mersen NH3GTR50KVA-1 is a specialist NH gTr low voltage fuse link engineered to provide reliable protection for distribution transformers against overloads and short-circuit faults. As part of the proven Mersen NH gTr fuse-link series, it features a transformer-specific time-current characteristic that accommodates transformer energisation inrush currents while ensuring dependable protection during fault conditions.
Designed for 50 kVA distribution transformers, this fuse link has a 72 A rated current and operates on 400 V AC systems. Its optimised operating characteristic improves selectivity with downstream protection devices while helping maximise transformer service life and minimise unnecessary fuse operation.
The NH3GTR50KVA-1 features an NH Size 3 body with isolated gripping lugs and a centre-mounted operating indicator. Its robust DIN NH construction makes it suitable for transformer feeders, industrial distribution systems and commercial electrical installations requiring dependable transformer protection.
Key Advantages
- Purpose-designed gTr fuse link for transformer protection.
- Suitable for 50 kVA distribution transformers.
- 72 A rated current.
- 400 V AC rated operating voltage.
- Transformer-specific characteristic tolerates energisation inrush currents.
- Centre indicator enables rapid identification of an operated fuse.
Key Features
- Mersen NH gTr transformer fuse-link series.
- NH Size 3.
- 72 A rated current.
- 400 V AC rated voltage.
- 50 kVA transformer nominal capacity.
- gTr operating characteristic.
- Centre-mounted visual operating indicator.
- Isolated gripping lugs.
- DIN NH blade-contact construction.
- Ceramic body for industrial applications.
Reliable Protection for Distribution Transformers
Unlike standard general-purpose fuse links, the gTr operating characteristic is specifically developed for transformer protection. It allows the high magnetising current generated during transformer energisation while providing dependable protection against overloads and severe short-circuit faults, helping avoid unnecessary interruptions to service.
The NH3GTR50KVA-1 is designed for installation in compatible NH3 fuse bases within industrial facilities, commercial buildings and utility distribution systems. Installation and replacement should only be carried out by qualified electrical professionals using an approved NH fuse puller.
Typical Applications
- 50 kVA distribution transformer protection.
- Industrial electrical distribution systems.
- Commercial building power distribution.
- Transformer feeder circuits.
- Industrial switchboards and distribution panels.
- Utility and infrastructure installations.
Technical Specifications
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| Fuse Indication | Visual indicator | |
|---|---|---|
| Voltage | 400 V | |
| Device Type | Fuse link | |
| Fuse Type | NH (DIN) | |
| Fuse Size | NH3 | |
| Fuse Class | gTr | |
| Current | 72 A | |
| Manufacturer | Mersen | |
| Item number | S1030531A | |
| Series | NH Fuse Links gTr 400 VAC | |
| Model | NH3GTR50KVA-1 | |
| EAN / UPC | 3605340535686 | |
| Product type | NH transformer protection fuse link | |
| Fuse size | NH3 | |
| Rated current | 72 A | |
| Transformer nominal capacity | 50 kVA | |
| Rated operating voltage | 400 V AC | |
| Current type | AC | |
| Operating characteristic | gTr | |
| Indicator | Centre indicator | |
| Gripping lugs | Isolated gripping lugs | |
| Body width | 53.1 mm | |
| Power dissipation | 5.5 W | |
| Weight | Approx. 1 kg | |
| Standards | DIN NH / IEC | |
| RoHS compliant | Yes | |
| HS Code | 85361090 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen NH3GTR50KVA-1 used for?
This fuse link is specifically designed to protect 50 kVA low voltage distribution transformers against overloads and short-circuit faults.
What transformer capacity is this fuse designed for?
The NH3GTR50KVA-1 is designed for transformers with a nominal capacity of 50 kVA.
What is the rated current?
The fuse has a rated current of 72 A.
What does the gTr characteristic mean?
The gTr operating characteristic is specifically developed for transformer protection, allowing transformer energisation inrush current while providing dependable overload and short-circuit protection.
What is the benefit of isolated gripping lugs?
Isolated gripping lugs improve handling safety during fuse installation and replacement when used with an approved NH fuse puller.
Trusted Transformer Protection
Mersen NH gTr transformer fuse links are trusted by electrical engineers, transformer manufacturers and panel builders for reliable transformer protection, excellent selectivity and dependable performance in low voltage distribution systems.
