Why Choose the Mersen V1000564 High Voltage DIN Back-up Fuse?
The Mersen V1000564 is a reliable Limitor®-P high voltage DIN back-up fuse developed to protect transformers and associated medium voltage equipment against damaging short-circuit currents. Also identified by catalogue number 45DB175V6,3P, it is designed for use in high voltage switchgear, controlgear and electrical distribution systems.
Manufactured in accordance with IEC 60282-1 and the VDE T4 design standard, the V1000564 combines dependable fault interruption with durable, high-quality construction. Pure silver fuse elements, silver-plated copper terminals and a ceramic insulating body provide consistent electrical performance and long-term operational reliability.
With a rated voltage of 17.5 kV AC, a rated current of 6.3 A and an integrated 80 N striker, the Mersen V1000564 is suitable for transformer feeders, substations and medium voltage switchgear assemblies requiring secure and predictable short-circuit protection.
Key Advantages
- Designed specifically for medium voltage transformer protection.
- 17.5 kV AC IEC rated voltage for high voltage installations.
- 6.3 A rated current for compatible transformer circuits.
- High 63 kA breaking capacity for dependable fault interruption.
- Integrated 80 N striker supports indication and switchgear operation.
- Premium ceramic and silver construction provides reliable long-term performance.
Key Features
- Mersen Limitor®-P series.
- Catalogue number: 45DB175V6,3P.
- 17.5 kV AC IEC voltage rating.
- 6.3 A rated current.
- DIN high voltage back-up fuse construction.
- 80 N standard striker mechanism.
- Pure silver fuse elements and silver-plated copper terminals.
- Compliant with IEC 60282-1 and RoHS requirements.
High voltage back-up fuses help protect transformers, cables and switchgear by interrupting significant short-circuit currents before they cause extensive thermal or mechanical damage. The Mersen V1000564 provides reliable current limitation and fault clearance for transformer circuits operating at voltages up to 17.5 kV AC.
The integrated striker provides a clear indication when the fuse has operated and can actuate a compatible switchgear mechanism. This supports coordinated circuit isolation, faster fault identification and safer maintenance within medium voltage power distribution systems.
Typical Applications
- Medium voltage distribution transformer protection.
- High voltage switchgear and controlgear.
- Electrical distribution substations.
- Ring main units and transformer feeders.
- Industrial medium voltage power systems.
- Utility and infrastructure distribution networks.
