Why Choose the Mersen NH32GTR400KVA-1 Transformer Protection Fuse-Link?
The Mersen NH32GTR400KVA-1 is a high-performance DIN NH gTr transformer protection fuse-link designed to protect low voltage distribution transformers against overloads and short-circuit faults. Its specialised time-current characteristic is adapted to transformer operating behaviour, helping provide reliable protection without unnecessary operation during normal transformer energisation.
Part of the Mersen NH gTr 400 V AC fuse-link range, this model is intended for transformers with a nominal rating of 400 kVA. The NH3 fuse-link combines a robust ceramic body, silver-plated copper blade contacts and a centre-mounted indication system for dependable service in industrial and commercial power distribution installations.
With a rated current of 577 A, a 400 V AC operating voltage and a maximum breaking capacity of 100 kA, the NH32GTR400KVA-1 provides effective current limitation and fault interruption. Its isolated gripping lugs support safer handling by qualified electrical professionals using an appropriate NH fuse replacement device.
Key Advantages
- Purpose-designed gTr operating characteristic for transformer protection.
- Suitable for 400 kVA low voltage distribution transformers.
- 577 A rated current matched to transformer applications.
- 400 V AC rated operating voltage.
- High 100 kA AC breaking capacity for reliable fault interruption.
- Isolated gripping lugs support safer fuse handling and replacement.
- Centre indicator enables quick identification of an operated fuse-link.
- Current-limiting performance helps reduce stress on transformers and switchgear.
Key Features
- Mersen NH gTr transformer protection fuse-link series.
- Catalogue number: NH32GTR400KVA-1.
- Item number: E1030542A.
- NH3 fuse size.
- 400 kVA transformer rating.
- 577 A rated current.
- 400 V AC rated voltage.
- Centre-mounted blown-fuse indicator.
- Isolated gripping lugs.
- Plain silver-plated copper blade contacts.
- Robust ceramic insulating body.
gTr fuse-links are specifically engineered for transformer protection. Their operating characteristic accommodates normal transformer inrush currents and temporary overload conditions while responding effectively to sustained overloads and high short-circuit currents.
The Mersen NH32GTR400KVA-1 provides coordination between the transformer and downstream gG protection devices. Its high breaking capacity and current-limiting action help reduce thermal and mechanical stress on transformers, cables and associated switchgear during severe electrical faults.
Typical Applications
- 400 kVA low voltage distribution transformers.
- Industrial transformer feeder panels.
- Commercial power distribution systems.
- Low voltage substations.
- Industrial switchgear assemblies.
- Manufacturing and processing facilities.
- OEM transformer distribution equipment.
- Infrastructure and utility installations.
