Why Choose the Mersen NH3GTR160KVA-8 Transformer Protection Fuse-Link?
The Mersen NH3GTR160KVA-8 is a specialist DIN NH gTr low voltage fuse-link engineered specifically for protecting distribution transformers. Designed for 160 kVA transformers, this NH Size 3 fuse-link has a 231 A current rating and a 400 V AC operating voltage, providing dependable transformer protection while accommodating normal energisation inrush currents.
As part of Mersen's proven NH gTr transformer protection range, the NH3GTR160KVA-8 incorporates live gripping lugs and a top-mounted indicator, enabling straightforward inspection and safe replacement using an approved NH fuse puller. The gTr characteristic has been specifically developed to match transformer operating characteristics and improve selectivity compared with standard gG fuse-links.
Designed for industrial power distribution, substations and commercial electrical installations, the NH3GTR160KVA-8 delivers high current-limiting performance, excellent breaking capacity and reliable long-term operation in demanding electrical environments.
Key Advantages
- Purpose-designed for distribution transformer protection.
- Suitable for transformers up to 160 kVA.
- 231 A rated current.
- 400 V AC rated voltage.
- gTr characteristic provides improved transformer protection and selectivity.
- High current-limiting performance minimises fault energy.
- Top indicator enables rapid identification of an operated fuse.
Key Features
- Mersen NH gTr transformer fuse-link series.
- Catalogue number: NH3GTR160KVA-8.
- Manufacturer item number: P1028711A.
- 231 A rated current.
- 400 V AC rated voltage.
- 160 kVA transformer protection.
- NH Size 3 construction.
- Top-mounted indication system.
- Live gripping lugs.
- Body width: 50 mm.
The Mersen NH3GTR160KVA-8 has been engineered specifically for transformer protection. Its gTr time-current characteristic tolerates transformer magnetising inrush currents while providing rapid disconnection under fault conditions, protecting both the transformer and associated electrical infrastructure.
Compared with standard gG fuse-links, the gTr characteristic provides improved selectivity for transformer installations. These fuse-links are designed to withstand approximately 1.3 times rated current for up to 10 hours while operating at approximately 1.5 times the transformer's nominal current within two hours, making them ideally suited to transformer protection.
Typical Applications
- Distribution transformer protection.
- Industrial substations.
- Commercial electrical distribution systems.
- Transformer switchgear.
- Industrial manufacturing facilities.
- Power distribution panels.
