Why Choose the Mersen NH32GTR50KVA-8 Transformer Protection Fuse?
The Mersen NH32GTR50KVA-8 is a high-performance NH transformer protection fuse-link designed to protect low-voltage distribution transformers against overloads and short-circuit currents. Manufactured to the DIN NH standard, this gTr fuse-link provides a time-current characteristic specifically matched to transformer operating conditions.
As part of Mersen’s NH gTr fuse-link range, the NH32GTR50KVA-8 helps provide effective coordination and selectivity between transformer protection and downstream gG fuse-links. Its specialised operating curve accommodates normal transformer inrush currents while disconnecting damaging overcurrents before they cause costly equipment failure.
Rated for a transformer capacity of 50 kVA, a current of 72 A and an operating voltage of 400 V AC, this NH3 fuse-link is suitable for industrial and commercial transformer installations. It includes live gripping lugs, blade contacts and a top-mounted indicator for convenient identification of fuse operation.
Key Advantages
- Purpose-designed gTr fuse-link for transformer protection.
- 50 kVA transformer rating for low-voltage distribution systems.
- 72 A rated current at 400 V AC.
- High 100 kA AC breaking capacity for dependable fault interruption.
- Transformer-specific time-current characteristic accommodates normal inrush currents.
- Top-mounted indicator assists with identifying an operated fuse-link.
Key Features
- Mersen NH gTr transformer fuse-link range.
- DIN NH3 fuse size.
- 50 kVA rated transformer capacity.
- 72 A rated current.
- 400 V AC rated operating voltage.
- gTr utilisation category for full-range transformer protection.
- Top-mounted fuse operation indicator.
- Live, non-insulated gripping lugs.
- Standard NH blade contacts for compatible fuse bases and switch-fuse equipment.
- 71 mm body width.
Transformer protection fuse-links must tolerate temporary magnetising inrush currents while operating quickly enough to prevent sustained overloads and short circuits from damaging transformer windings, cables and associated switchgear. The Mersen NH32GTR50KVA-8 uses a gTr characteristic developed specifically for these operating requirements.
When correctly selected and coordinated, the fuse-link provides effective discrimination with downstream gG protection devices. This helps isolate faults at the appropriate point in the electrical distribution system, reducing unnecessary outages and improving overall installation reliability.
Typical Applications
- Protection of 50 kVA low-voltage distribution transformers.
- Industrial electrical distribution systems.
- Commercial building power installations.
- Transformer feeder panels and switchboards.
- NH fuse-switch disconnectors and fuse bases.
- Machinery and production facility power distribution.
