Why Choose the Mersen NH3GTR250KVA-1 Transformer Fuse?
The Mersen NH3GTR250KVA-1 is a high-performance NH gTr transformer fuse link designed to protect low-voltage distribution transformers against overloads and short-circuit faults. Manufactured to DIN NH standards, this full-range fuse uses a time-current characteristic specifically developed for transformer protection in industrial, commercial and infrastructure power distribution systems.
As part of the trusted Mersen NH gTr fuse-link range, the NH3GTR250KVA-1 provides dependable fault interruption while accommodating the normal operating characteristics of transformers. Its gTr utilisation category allows transformer energisation and temporary loading conditions while ensuring controlled disconnection during sustained overloads or severe electrical faults.
With a 250 kVA transformer rating, 361 A rated current and a 400 V AC operating voltage, this NH3 fuse link is suitable for demanding transformer protection applications. Its centre-mounted indicator and isolated gripping lugs support convenient inspection and safer handling within compatible NH fuse bases and switchgear.
Key Advantages
- Purpose-designed NH gTr fuse link for transformer protection.
- 250 kVA transformer rating for substantial low-voltage distribution systems.
- 361 A rated current with a 400 V AC voltage rating.
- Full-range protection against transformer overloads and short circuits.
- 100 kA breaking capacity for dependable fault interruption.
- Isolated gripping lugs and centre indicator support safe maintenance and rapid status identification.
Key Features
- Mersen NH gTr transformer fuse-link series.
- NH3 fuse size.
- 250 kVA rated transformer capacity.
- 361 A rated current.
- 400 V AC rated voltage.
- gTr full-range utilisation category.
- Centre-mounted fuse operation indicator.
- Isolated gripping lugs for handling with a suitable NH fuse puller.
The Mersen NH3GTR250KVA-1 uses a gTr operating characteristic specifically matched to the electrical behaviour of distribution transformers. This enables the fuse to tolerate normal transformer energisation and operating conditions while protecting the installation against sustained overloads and high short-circuit currents.
Its high breaking capacity and current-limiting performance help reduce thermal and mechanical stress on transformers, conductors and switchgear during serious electrical faults. The centre indicator provides a clear visual indication after fuse operation, while the isolated gripping lugs improve protection for qualified personnel during removal and replacement.
Typical Applications
- Protection of 250 kVA low-voltage distribution transformers.
- Industrial power distribution systems.
- Commercial building electrical installations.
- Transformer feeder panels and switchgear.
- Electrical substations and distribution cabinets.
- Utility, infrastructure and manufacturing facilities.
