Why Choose the Mersen W076471 High Voltage Motor Back-up Fuse?
The Mersen W076471 is a high-performance Limitor® aSJB/D high voltage back-up fuse developed specifically to protect high voltage motors against damaging short-circuit currents. Also identified by catalogue number 45ASB36V80P-1, it is designed for demanding motor circuits that experience repeated peak currents during starting.
The W076471 combines dependable current-limiting protection with a robust construction suited to industrial switchgear and controlgear. Its silver-plated copper fuse elements, silver-plated brass terminals and melamine fibreglass body support consistent electrical performance and reliable operation in demanding high voltage systems.
With a rated voltage of 3.6 kV AC, a rated current of 80 A and an integrated 20 N striker, the Mersen W076471 is suitable for protecting industrial motors, pumps, compressors and other medium voltage driven equipment. Its compact 50.8 mm diameter by 192 mm fuse-link size supports installation in compatible clip-mounted fuse assemblies.
Key Advantages
- Designed specifically for high voltage motor protection.
- 3.6 kV AC IEC rated voltage for medium voltage motor circuits.
- 80 A rated current for compatible industrial motors.
- Withstands repeated peak currents generated during motor starting.
- Integrated 20 N striker supports indication and switchgear operation.
- 60 kA breaking capacity provides reliable short-circuit interruption.
Key Features
- Mersen Limitor® aSJB/D series.
- Catalogue number: 45ASB36V80P-1.
- 3.6 kV AC IEC rated voltage.
- 80 A rated current.
- High voltage back-up fuse for motor protection.
- 20 N integrated striker mechanism.
- Silver-plated copper fuse elements and silver-plated brass terminals.
- Melamine fibreglass insulating body.
Reliable Protection for High Voltage Motors
High voltage motor fuses must tolerate the temporary inrush currents generated during motor starting while responding rapidly to serious short-circuit faults. The Mersen W076471 is engineered to support repeated starting cycles without unnecessary operation while providing dependable back-up protection when fault currents exceed safe limits.
The integrated striker provides a clear indication when the fuse has operated and can actuate a compatible switchgear mechanism. This supports coordinated fault isolation, faster maintenance and improved protection for motors, contactors and associated electrical equipment.
Typical Applications
- Medium and high voltage motor protection.
- Industrial motor control centres.
- Pumps, compressors and ventilation motors.
- Mining and heavy industrial equipment.
- Processing and manufacturing machinery.
- High voltage switchgear and controlgear.
