Why Choose the Mersen NH32GTR315KVA Transformer Protection Fuse?
The Mersen NH32GTR315KVA is a high-performance DIN NH gTr fuse-link engineered specifically to protect low-voltage distribution transformers against overloads and short circuits. Manufactured by Mersen, this NH3 fuse-link has a transformer-specific time-current characteristic that delivers reliable protection while accommodating the temporary magnetising inrush current produced when a transformer is energised.
The specialised gTr operating characteristic is matched to transformer protection requirements and supports effective selectivity with downstream gG fuse-links. Its robust ceramic body, silver-plated copper contacts and plain blade terminals provide dependable electrical and mechanical performance in demanding industrial power-distribution installations.
With a 455 A rated current, 400 V AC rated voltage and suitability for 315 kVA transformers, the NH32GTR315KVA is ideal for substations, switchboards and transformer protection panels. The fuse-link also provides a 100 kA breaking capacity and a top-mounted indicator for fast visual identification after operation.
Key Advantages
- Purpose-designed DIN NH gTr fuse-link for transformer protection.
- Suitable for protecting 315 kVA distribution transformers.
- 455 A rated current for high-capacity electrical installations.
- 400 V AC rated voltage for low-voltage distribution systems.
- 100 kA breaking capacity for dependable fault interruption.
- Integrated top indicator for rapid fuse status identification.
Key Features
- Mersen NH gTr 400 V AC fuse-link series.
- DIN NH Size 3 construction.
- 315 kVA transformer protection rating.
- 455 A rated current.
- 400 V AC IEC rated voltage.
- gTr operating characteristic.
- Top-mounted fuse operation indicator.
- Live gripping lugs and plain blade terminals.
Mersen gTr fuse-links are designed around the operating behaviour of distribution transformers. Their time-current characteristic permits normal transformer energisation while providing full-range protection against sustained overloads and high short-circuit currents.
The NH32GTR315KVA can be loaded at up to 1.3 times its nominal current for a limited period while remaining capable of operating under sustained overcurrent conditions. This transformer-specific response helps improve selectivity, minimise unnecessary interruptions and protect valuable distribution equipment.
Typical Applications
- 315 kVA low-voltage distribution transformers.
- Industrial substations and transformer rooms.
- Commercial power-distribution systems.
- Main switchboards and electrical switchgear.
- Utility and infrastructure installations.
- OEM transformer protection panels.
