Why Choose the Mersen NH4AGTR315KVA Transformer Protection Fuse?
The Mersen NH4AGTR315KVA is a high-performance DIN NH gTr fuse-link specifically engineered to protect low voltage distribution transformers against overloads and short circuits. As part of the trusted Mersen NH gTr transformer protection range, it delivers coordinated protection that closely matches transformer characteristics, helping maximise reliability and minimise unnecessary fuse operation.
Manufactured to IEC and DIN NH standards, this NH4a size fuse-link features live gripping lugs and a centre-mounted operation indicator for rapid visual inspection and straightforward replacement by qualified personnel. Its robust ceramic construction and high interrupting capacity make it suitable for demanding industrial and utility installations.
Designed for the protection of 315 kVA distribution transformers, the NH4AGTR315KVA has a 455 A rated current and a 400 V AC operating voltage, making it an ideal solution for transformer feeders in commercial and industrial electrical distribution systems.
Key Advantages
- Purpose-designed gTr characteristic for transformer protection.
- Suitable for protecting 315 kVA distribution transformers.
- 455 A rated current for high-power applications.
- 400 V AC rated voltage.
- High breaking capacity for dependable fault interruption.
- Centre-mounted indicator provides fast visual fuse status confirmation.
Key Features
- Mersen NH gTr transformer fuse-link series.
- Catalogue number: NH4AGTR315KVA.
- Transformer rating: 315 kVA.
- 455 A rated current.
- 400 V AC IEC rated voltage.
- DIN NH Size NH4a.
- gTr utilisation category.
- Centre-mounted operation indicator.
- Live gripping lugs.
- Body width approximately 72.9 mm.
- RoHS compliant.
The Mersen NH4AGTR315KVA is specifically engineered for transformer protection applications. Its gTr time-current characteristic is optimised to coordinate with transformer operating characteristics, providing dependable fault protection while reducing the likelihood of nuisance fuse operation during transformer energisation.
Its robust NH construction, high fault interruption capability and compliance with recognised international standards make it an excellent choice for transformer substations, industrial power distribution systems and utility infrastructure.
Typical Applications
- Low voltage distribution transformers.
- Industrial substations.
- Commercial electrical distribution systems.
- Utility transformer protection.
- OEM switchgear assemblies.
- Power distribution infrastructure.
