Why Choose the Mersen Z1000108 High-Voltage Transformer Fuse?
The Mersen Z1000108, catalogue reference 45DB120V200P, is a high-voltage DIN back-up fuse-link engineered to protect distribution transformers against the damaging effects of short-circuit currents. As part of the proven Mersen Limitor®-P series, it delivers dependable current-limiting protection for high-voltage switchgear, controlgear and electrical distribution systems.
Rated at 12 kV AC and 200 A, the Z1000108 rapidly interrupts severe fault currents before they reach their maximum prospective peak. This reduces thermal, electrical and mechanical stress on transformers, cables and associated high-voltage equipment while improving overall system reliability.
Manufactured using a robust ceramic body, pure silver fuse elements and silver-plated copper terminals, the fuse-link measures 88 mm in diameter and 292 mm in length. It incorporates an integrated 80 N standard striker for operating compatible switchgear mechanisms or providing fuse-operation indication.
Key Advantages
- Reliable high-voltage transformer short-circuit protection.
- 12 kV AC rated voltage for medium- and high-voltage distribution systems.
- 200 A rated current for demanding transformer applications.
- Current-limiting operation helps reduce fault energy and equipment damage.
- 63 kA breaking capacity for demanding installations.
- Integrated 80 N striker for switchgear operation or indication.
Key Features
- Mersen Limitor®-P high-voltage DIN back-up fuse-link.
- Catalogue number: 45DB120V200P.
- Rated voltage: 12 kV AC.
- Rated current: 200 A.
- Breaking capacity: 63 kA.
- Minimum interrupting rating: 610 A.
- Total clearing I²t: 800 kA²s.
- Fuse dimensions: 88 mm diameter × 292 mm length.
- 80 N standard striker.
- Pure silver fuse elements with silver-plated copper terminals.
The Mersen Z1000108 is designed to provide dependable protection for distribution transformers operating within medium- and high-voltage electrical networks. Its current-limiting characteristics reduce the energy released during severe electrical faults, helping extend the service life of transformers, switchgear and associated infrastructure.
As a back-up fuse-link manufactured in accordance with IEC 60282-1, it is intended to interrupt high fault currents above its specified minimum interrupting rating and should be coordinated with suitable switching equipment for complete transformer protection.
Typical Applications
- Distribution transformer protection.
- Medium- and high-voltage substations.
- Industrial electrical distribution systems.
- High-voltage switchgear and controlgear.
- Utility power distribution networks.
- Renewable energy and infrastructure projects.
