Why Choose the Mersen K1000256 High Voltage DIN Back-up Fuse?
The Mersen K1000256 is a premium DIN high voltage back-up fuse engineered to provide dependable short-circuit protection for medium voltage transformers. As part of the proven Mersen Limitor®-PD series, it is specifically designed for transformer protection in high voltage switchgear, substations and industrial electrical distribution systems.
Manufactured in accordance with IEC 60282-1 and VDE 0670 T402, the K1000256 offers outstanding current-limiting performance whilst helping minimise thermal and mechanical stress during fault conditions. Premium materials including pure silver fuse elements, silver-plated copper end caps and a ceramic body provide reliable performance and a long operational life.
With a rated voltage of 24 kV AC, a 25 A current rating and an integrated 80 N striker, the Mersen K1000256 is ideally suited to protecting medium voltage transformers in demanding utility and industrial power applications.
Key Advantages
- Designed specifically for medium voltage transformer protection.
- 24 kV AC rated voltage for demanding electrical networks.
- 25 A rated current for compatible transformer installations.
- Integrated 80 N thermal striker for compatible switchgear mechanisms.
- Current-limiting design reduces fault energy and equipment damage.
- Manufactured to IEC 60282-1 and VDE 0670 T402 standards.
Key Features
- Mersen Limitor®-PD high voltage DIN back-up fuse.
- Catalogue number: 45DB240V25PD.
- 24 kV AC rated voltage.
- 25 A rated current.
- 56 mm diameter × 442 mm length.
- Integrated 80 N thermal striker.
- Ceramic body with pure silver fuse elements.
- Designed for transformer protection applications.
High voltage back-up fuse-links rapidly interrupt high prospective fault currents before they can damage transformers and associated switchgear. Their current-limiting characteristics reduce thermal and mechanical stress, improving equipment reliability whilst helping to minimise maintenance requirements.
The Mersen Limitor®-PD range has been trusted worldwide for decades in transformer protection applications, delivering dependable fault interruption across utility, industrial and infrastructure installations.
Typical Applications
- Medium voltage transformer protection.
- Electrical substations.
- Medium voltage switchgear.
- Industrial power distribution.
- Utility electrical networks.
- OEM medium voltage equipment.
