Why Choose the Mersen R1000124 High Voltage Transformer Fuse?
The Mersen R1000124 is a dependable DIN high voltage back-up fuse-link designed to protect transformers and associated medium voltage equipment against damaging short-circuit currents. Part of the established Mersen Limitor®-PT series, it combines effective current limitation with controlled power dissipation for reliable operation in high voltage switchgear and controlgear.
Limitor®-PT fuse-links are classified as back-up fuses in accordance with IEC 60282-1 and are specifically intended for transformer protection. The R1000124 uses high-quality materials, including pure silver fuse elements, silver-coated copper contact caps and a robust ceramic body, supporting dependable interruption performance and long-term durability.
With a rated voltage of 12 kV AC and a rated current of 16 A, the Mersen R1000124 is suitable for compatible medium voltage transformer circuits. Its DIN-format construction features a 56 mm diameter, a 292 mm body length and an integrated 80 N striker for operation with suitable switchgear mechanisms.
Key Advantages
- Designed specifically for medium voltage transformer protection.
- 12 kV AC rated voltage for high voltage distribution systems.
- 16 A rated current for compatible transformer circuits.
- Current-limiting operation helps reduce damaging short-circuit energy.
- Controlled power dissipation supports efficient switchgear design.
- Integrated 80 N striker for compatible tripping or indication mechanisms.
- Durable ceramic body with high-quality silver conductive components.
- Back-up fuse design in accordance with IEC 60282-1.
Key Features
- Mersen Limitor®-PT back-up fuse series.
- Catalogue number: 45DB120V16PT.
- 12 kV AC rated voltage.
- 16 A rated current.
- 56 mm fuse diameter.
- 292 mm fuse length.
- Integrated 80 N striker mechanism.
- Controlled power dissipation design.
- Pure silver fuse elements.
- Silver-coated copper contact caps.
- Robust ceramic insulating body.
High voltage back-up fuse-links protect transformers by interrupting substantial short-circuit currents before excessive electrical, thermal and mechanical stress can damage transformer windings, switchgear or connected equipment. Their current-limiting action reduces the peak fault current and energy transferred into the protected circuit.
The Mersen R1000124 should be coordinated with suitable overload protection because a back-up fuse is intended primarily to interrupt high fault currents. When the fuse operates, its integrated striker can actuate a compatible switchgear trip mechanism or provide an indication that fuse replacement is required.
Typical Applications
- Medium voltage transformer protection.
- High voltage switchgear and controlgear.
- Industrial power distribution systems.
- Utility substations and distribution networks.
- Commercial infrastructure power systems.
- Renewable energy installations.
- Manufacturing and processing facilities.
- OEM medium voltage electrical assemblies.
