Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
MERSEN FUSE NH3C 75KVA 400V GTR MI NH3GTR75KVA
Mersen NH3GTR75KVA DIN NH3 gTr transformer protection fuse-link rated 108 A, 400 V AC for 75 kVA transformers.
£33.58
Why Choose the Mersen NH3GTR75KVA Transformer Protection Fuse?
The Mersen NH3GTR75KVA is a high-performance NH transformer protection fuse-link engineered to protect low-voltage distribution transformers against overloads and short-circuit faults. Manufactured to the DIN NH standard, this gTr fuse-link provides a time-current characteristic specifically developed for transformer applications.
Part of Mersen's trusted NH gTr fuse range, the NH3GTR75KVA offers reliable discrimination with downstream gG fuse-links while allowing normal transformer energisation currents without nuisance operation. This helps maximise system reliability whilst protecting valuable transformers from damaging fault conditions.
With a transformer rating of 75 kVA, a rated current of 108 A and a 400 V AC operating voltage, the NH3GTR75KVA is ideal for industrial and commercial transformer installations. It features live gripping lugs, standard NH blade contacts and a centre-mounted operation indicator for easy maintenance and fault identification.
Key Advantages
- Purpose-designed gTr fuse-link for transformer protection.
- 75 kVA transformer rating for low-voltage distribution systems.
- 108 A rated current at 400 V AC.
- 100 kA AC breaking capacity for dependable fault interruption.
- Transformer-specific operating characteristic tolerates normal magnetising inrush currents.
- Centre-mounted indicator provides quick visual identification after operation.
Key Features
- Mersen NH gTr transformer fuse-link series.
- DIN NH3 fuse size.
- 75 kVA transformer protection.
- 108 A rated current.
- 400 V AC rated voltage.
- gTr utilisation category.
- Centre-mounted fuse operation indicator.
- Live gripping lugs.
- Standard NH blade contacts.
- 50 mm body width.
Reliable Protection for Distribution Transformers
Transformer protection fuse-links must withstand temporary inrush currents whilst providing rapid disconnection during overloads and short circuits. The Mersen NH3GTR75KVA features a gTr operating characteristic specifically developed to protect transformers without unnecessary interruptions during energisation.
When coordinated with downstream gG fuse-links, the NH3GTR75KVA provides excellent selectivity, helping minimise downtime and ensuring faults are isolated at the appropriate point within the electrical distribution network.
Typical Applications
- Protection of 75 kVA low-voltage transformers.
- Industrial power distribution systems.
- Commercial electrical installations.
- Transformer feeder switchboards.
- NH fuse-switch disconnectors.
- Electrical distribution panels and substations.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Indication | Visual indicator | |
|---|---|---|
| Voltage | 400 V | |
| Device Type | Fuse link | |
| Fuse Type | NH (DIN) | |
| Fuse Size | NH3 | |
| Fuse Class | gTr | |
| Current | 108 A | |
| Manufacturer | Mersen | |
| Series | NH gTr Fuse-Links | |
| Model | NH3GTR75KVA | |
| Item number | K1030501A | |
| Product type | NH transformer protection fuse-link | |
| Utilisation category | gTr | |
| Transformer rating | 75 kVA | |
| Rated current | 108 A | |
| Rated voltage | 400 V AC | |
| Breaking capacity | 100 kA AC | |
| Fuse size | NH3 | |
| Contact type | NH blade contacts | |
| Indicator | Centre-mounted indicator | |
| Gripping lugs | Live | |
| Body width | 50 mm | |
| Voltage type | AC | |
| EAN | 3605340535273 | |
| Compliance | RoHS compliant | |
| HS Code | 85361090 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen NH3GTR75KVA used for?
It is designed to protect 75 kVA low-voltage transformers against overloads and short-circuit faults.
What is the rated current?
The NH3GTR75KVA has a rated current of 108 A.
What does the gTr classification mean?
gTr identifies a transformer protection fuse-link designed to withstand transformer energisation currents whilst providing full-range fault protection.
What fuse size is required?
This product is an NH3 DIN fuse-link for use in compatible NH3 fuse bases and switch-fuse equipment.
Does this fuse include an operation indicator?
Yes. The NH3GTR75KVA incorporates a centre-mounted operation indicator to simplify maintenance and replacement.
Trusted Transformer Protection from Mersen
Mersen NH gTr fuse-links are trusted worldwide by electrical engineers and panel builders for reliable transformer protection, high fault interruption capability and dependable long-term performance.
