Why Choose the Mersen R1000147 High Voltage Transformer Fuse?
The Mersen R1000147 is a high-performance DIN high voltage back-up fuse-link developed to protect transformers and associated medium voltage equipment against damaging short-circuit currents. Part of the established Mersen Limitor®-PT series, it provides effective current limitation and controlled power dissipation for dependable operation in high voltage switchgear and controlgear.
The R1000147 is manufactured using high-quality materials selected for reliable electrical and mechanical performance. Its construction includes pure silver fuse elements, silver-coated copper contact caps and a durable ceramic body, helping deliver rapid fault interruption and long-term service in demanding power distribution environments.
With a rated voltage of 24 kV AC and a rated current of 63 A, the Mersen R1000147 is suitable for compatible medium voltage transformer circuits. Its DIN-format design features a 56 mm diameter, a 442 mm body length and an integrated 80 N controlled power dissipation striker for use with compatible switchgear mechanisms.
Key Advantages
- Designed specifically for medium voltage transformer protection.
- 24 kV AC rated voltage for high voltage distribution systems.
- 63 A rated current for compatible transformer circuits.
- Current-limiting operation helps reduce peak fault current and destructive energy.
- Controlled power dissipation supports reliable switchgear operation.
- Integrated 80 N striker for compatible tripping and indication mechanisms.
- High breaking capacity for demanding electrical installations.
- Complies with recognised IEC, VDE and DIN high voltage fuse standards.
Key Features
- Mersen Limitor®-PT back-up fuse series.
- Catalogue number: 45DB240V63PT.
- 24 kV AC rated voltage.
- 63 A rated current.
- 56 mm fuse diameter.
- 442 mm fuse length.
- Integrated 80 N controlled power dissipation striker.
- Pure silver fuse elements for dependable fault interruption.
- 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 thermal and mechanical forces can damage transformer windings, switchgear or connected equipment. The current-limiting action of the Mersen R1000147 helps reduce both the peak current and the total energy transmitted during a serious electrical fault.
As a back-up fuse-link, the R1000147 is intended primarily for high-current fault protection and should be coordinated with suitable overload protection. When the fuse operates, its integrated striker can actuate a compatible switchgear trip mechanism or provide an indication that the fuse-link requires replacement.
Typical Applications
- Medium voltage distribution transformer protection.
- High voltage switchgear and controlgear.
- Utility substations and distribution networks.
- Industrial power distribution systems.
- Renewable energy and power generation installations.
- Manufacturing and processing facilities.
- Commercial infrastructure power systems.
- OEM medium voltage electrical assemblies.
