Why Choose the Mersen NH32GTR100KVA-1 Transformer Protection Fuse?
The Mersen NH32GTR100KVA-1 is a specialist DIN NH gTr transformer fuse-link designed to protect low-voltage transformers against overloads and short-circuit faults. Rated for a 100 kVA transformer, this industrial fuse combines a 144 A rated current with a 400 V AC voltage rating for dependable protection in commercial and industrial power distribution systems.
The fuse features a gTr time-current characteristic specifically adapted to transformer operating conditions. It can accommodate the temporary magnetising inrush current produced when a transformer is energised while still providing effective disconnection when a sustained overload or short circuit occurs.
Manufactured in the NH3 blade-contact format, the Mersen NH32GTR100KVA-1 is suitable for installation in compatible NH fuse bases within transformer feeders, switchboards and low-voltage distribution assemblies. Its robust construction and current-limiting performance help protect transformers, conductors and associated switchgear from damaging fault energy.
Key Advantages
- Designed specifically for 100 kVA transformer protection.
- 144 A rated current matched to suitable transformer circuits.
- 400 V AC voltage rating for low-voltage power distribution.
- gTr operating characteristic accommodates transformer inrush current.
- Current-limiting operation helps reduce damaging short-circuit energy.
- Standard NH3 blade-contact construction for compatible NH fuse bases.
Key Features
- Mersen NH transformer fuse-link range.
- 100 kVA transformer rating.
- 144 A rated current.
- 400 V AC rated operating voltage.
- NH3 fuse size.
- gTr transformer protection characteristic.
- Industrial NH blade contacts for secure installation.
- Designed for use in compatible low-voltage NH fuse systems.
- Suitable for transformer feeder and distribution applications.
- Professional installation and replacement using suitable NH handling equipment.
Transformers can draw a substantial temporary current when first energised. A conventional fuse selected without consideration of this inrush current may operate unnecessarily. The Mersen NH32GTR100KVA-1 uses a gTr characteristic designed to tolerate normal transformer starting conditions while maintaining effective protection against sustained overloads and short circuits.
During a serious electrical fault, the fuse interrupts the circuit and limits the energy allowed to pass through to the transformer and connected equipment. This helps reduce thermal and mechanical stress on conductors, busbars and switchgear while improving the overall safety and reliability of the electrical installation.
Typical Applications
- Protection of 100 kVA low-voltage transformers.
- Transformer feeder circuits.
- Industrial power distribution switchboards.
- Commercial electrical distribution systems.
- Electrical substations and plant rooms.
- OEM transformer and switchgear assemblies.
