Why Choose the Mersen Z1000568 High-Voltage Transformer Fuse?
The Mersen Z1000568, catalogue reference 45DB175V25P, is a robust DIN high-voltage back-up fuse-link developed to protect medium-voltage power transformers against damaging short-circuit currents. As part of the proven Mersen Limitor®-P series, it provides dependable current limitation and fault interruption for industrial switchgear, substations and electrical distribution systems.
Rated at 17.5 kV AC and 25 A, the fuse-link delivers a high 63 kA breaking capacity, helping to minimise thermal and mechanical stress during electrical faults. An integrated 80 N striker provides reliable mechanical indication and can operate compatible switchgear tripping mechanisms.
Manufactured with a ceramic body, pure silver fuse elements and silver-plated copper end caps, the Z1000568 is designed in accordance with IEC 60282-1 and the VDE T4 standard, ensuring dependable long-term performance in demanding medium-voltage applications.
Key Advantages
- DIN high-voltage back-up fuse-link for transformer protection.
- 17.5 kV AC rated voltage for medium-voltage systems.
- 25 A current rating for transformer protection.
- 63 kA breaking capacity for high fault interruption capability.
- Current-limiting design reduces fault energy.
- Integrated 80 N striker for indication and switchgear tripping.
- Pure silver fuse elements for consistent electrical performance.
- Manufactured to IEC 60282-1 requirements.
Key Features
- Mersen Limitor®-P back-up fuse series.
- 17.5 kV AC IEC rated voltage.
- 25 A rated current.
- 63 kA maximum breaking capacity.
- 93 A minimum interrupting current.
- 6 kA²s clearing I²t.
- 73 W power dissipation at rated current.
- Standard 80 N striker.
- Silver-plated copper terminals.
- High-strength ceramic insulating body.
The Mersen Z1000568 rapidly interrupts high short-circuit currents before they can damage transformer windings, switchgear and associated equipment. Its current-limiting characteristics help reduce thermal stress, mechanical forces and equipment downtime following electrical faults.
As a back-up fuse-link, the Z1000568 should be coordinated with suitable protection devices for overload protection and lower-level overcurrents, providing dependable transformer protection in industrial and utility installations.
Typical Applications
- Medium-voltage transformer protection.
- Industrial electrical distribution systems.
- High-voltage switchgear.
- Utility substations.
- Ring main units.
- Infrastructure and renewable energy installations.
