MERSEN FUSE H 1209UP BCKUP T292-56/16 45DB120V16PT

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.

Reliable Protection for Medium Voltage Transformers

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.