Why Choose the Mersen F076480 High-Voltage Motor Fuse?
The Mersen F076480, catalogue reference 45ASB120V63P-3, is a high-voltage back-up fuse-link specifically developed for the protection of medium-voltage motors, switchgear and controlgear. Part of the Mersen Limitor® aSJB/D series, it is engineered to withstand repeated motor starting currents while providing rapid interruption of damaging short-circuit faults.
Rated at 12 kV AC with a 63 A current rating, the F076480 delivers dependable current-limiting protection for industrial motor applications. Its back-up operating characteristic makes it ideal for coordinated protection schemes where overload protection is provided separately while the fuse clears high-energy fault currents.
The fuse-link is manufactured using a durable melamine fibreglass body, silver-plated copper fuse elements and silver-plated brass terminals. It also incorporates an integrated 20 N striker for reliable indication and operation of compatible switchgear mechanisms following fuse operation.
Key Advantages
- High-voltage back-up fuse designed for motor protection.
- 12 kV AC rated voltage for medium-voltage systems.
- 63 A rated current.
- Designed to tolerate repeated motor starting peak currents.
- 60 kA breaking capacity for dependable short-circuit interruption.
- Integrated 20 N striker for indication and switchgear operation.
- Current-limiting design helps reduce thermal and mechanical fault stresses.
- Manufactured using premium silver-plated conductive materials for long service life.
Key Features
- Mersen Limitor® aSJB/D motor fuse series.
- Manufacturer article number F076480.
- Catalogue number 45ASB120V63P-3.
- 12 kV AC IEC rated voltage.
- 63 A rated current.
- 60 kA maximum breaking capacity.
- 325 A minimum breaking current.
- Total clearing I²t of 24 kA²s.
- Power dissipation of approximately 35 W at 0.7 × rated current.
- IEC 60644 motor fuse coefficient K of 0.51.
- Integrated striker indication system.
- Clip-mounted cylindrical DIN construction.
Reliable Protection for Medium-Voltage Motors
The Mersen F076480 is designed to withstand the repeated inrush currents associated with medium-voltage motor starting while remaining capable of rapidly interrupting severe short-circuit faults. Its current-limiting performance helps reduce the thermal and mechanical stress imposed on motors, cables and switchgear during fault conditions.
As a back-up fuse-link, the F076480 should be coordinated with suitable overload protection and selected according to the motor characteristics, starting conditions and available fault current. This coordinated approach delivers dependable protection and long service life for critical industrial equipment.
Typical Applications
- Medium-voltage induction motor protection.
- Industrial motor control centres.
- Pumps and compressor systems.
- Ventilation and fan installations.
- Mining and mineral processing equipment.
- Oil and gas processing plants.
- Manufacturing and production facilities.
- Medium-voltage switchgear and controlgear.
