Why Choose the Mersen N1000144 High Voltage Transformer Protection Fuse?
The Mersen N1000144 is a premium high voltage DIN back-up fuse-link engineered to provide dependable short-circuit protection for transformers operating within medium voltage electrical distribution systems. As part of the trusted Mersen Limitor®-PT series, it offers controlled power dissipation, high breaking capacity and reliable operation for demanding industrial and utility applications.
Designed specifically for transformer protection, the N1000144 features pure silver fuse elements, silver-plated copper terminals and a robust ceramic body to deliver excellent electrical performance and long service life. The integrated 80 N striker enables fault indication or operation of compatible switchgear following fuse operation.
With a 24 kV AC IEC voltage rating, 31.5 A current rating and a 63 kA breaking capacity, the Mersen N1000144 is ideally suited for protecting transformers, substations, ring main units and medium voltage switchgear against damaging short-circuit faults.
Key Advantages
- Designed specifically for high voltage transformer protection.
- 24 kV AC IEC rated voltage.
- 31.5 A rated current.
- Integrated 80 N striker for switchgear operation and fault indication.
- Controlled power dissipation (CPD) design reduces thermal loading.
- 63 kA breaking capacity for dependable fault interruption.
- Pure silver fuse elements for consistent performance.
- Manufactured in accordance with IEC 60282-1 and VDE T4 requirements.
Key Features
- Mersen Limitor®-PT high voltage DIN back-up fuse-link.
- Catalogue number: 45DB240V32PT.
- Rated voltage: 24 kV AC.
- Rated current: 31.5 A.
- Fuse size: 56 mm diameter × 442 mm length.
- Clip mounting.
- Integrated 80 N striker indication system.
- Controlled power dissipation (CPD).
- VDE T4 transformer protection design.
High voltage back-up fuse-links provide rapid interruption of damaging short-circuit currents before excessive thermal or mechanical stress can affect transformer windings or associated switchgear. Their current-limiting performance helps minimise equipment damage and improve system reliability.
The Mersen N1000144 incorporates controlled power dissipation technology to reduce heat build-up within enclosed switchgear while maintaining excellent protection performance for critical transformer installations.
Typical Applications
- Medium voltage transformer protection.
- Electrical substations.
- Ring main units.
- Industrial switchgear.
- Utility distribution systems.
- Power generation facilities.
- Renewable energy substations.
- OEM medium voltage equipment.
