Why Choose the Mersen M1018313 High Voltage Transformer Fuse?
The Mersen M1018313 is a high performance Limitor®-PTS DIN high voltage back-up fuse-link designed to protect medium voltage transformers against the thermal and dynamic effects of short-circuit currents. Manufactured to the VDE T402 design standard, it is suitable for transformer protection in both air-insulated and gas-insulated switchgear.
Part of Mersen's advanced Limitor®-PTS range, the M1018313 incorporates specially developed fuse elements that reduce power losses and help limit heat build-up inside the switchgear fuse compartment. Its integrated 80 N thermal striker supports dependable fault indication and operation with compatible switching mechanisms.
With a rated voltage of 12 kV AC, a rated current of 63 A and compact dimensions of 56 mm diameter × 292 mm length, the Mersen M1018313 provides reliable transformer protection while helping improve thermal performance in enclosed medium voltage equipment.
Key Advantages
- High voltage DIN back-up fuse-link for transformer protection.
- 12 kV AC rated voltage for medium voltage systems.
- 63 A rated current.
- Low power dissipation helps reduce switchgear compartment heating.
- 80 kA maximum breaking capacity.
- Integrated 80 N thermal striker.
- Suitable for air-insulated and gas-insulated switchgear.
- Robust ceramic construction with pure silver fuse elements.
Key Features
- Mersen Limitor®-PTS back-up fuse series.
- Catalogue number: 45DB120V63PTS2.
- 12 kV AC IEC rated voltage.
- 63 A current rating.
- 56 mm diameter × 292 mm length.
- 80 kA maximum AC breaking capacity.
- 57 kA²s total clearing I²t at rated voltage.
- 260 A minimum interrupting rating.
- 80 N thermal striker for fault indication.
- Low power loss design with 58 W dissipation at rated current.
The Mersen M1018313 is designed to interrupt high prospective fault currents before they can cause serious damage to transformers, switchgear and associated distribution equipment. Its current-limiting action reduces the peak fault current and let-through energy, helping minimise thermal and mechanical stress throughout the protected system.
The Limitor®-PTS design combines low power losses with a thermal striker that helps prevent overheating inside the fuse compartment. This makes the M1018313 particularly suitable for compact switchgear installations where dependable protection and careful thermal management are required.
Typical Applications
- Medium voltage distribution transformer protection.
- Air-insulated switchgear.
- Gas-insulated switchgear.
- Utility substations.
- Industrial electrical distribution systems.
- Renewable energy infrastructure.
- OEM medium voltage switchgear assemblies.
