Why Choose the Mersen F075583 High-Voltage Motor Fuse?
The Mersen F075583, catalogue reference 45ASB36V350P-2, is a high-voltage back-up fuse-link designed specifically for the protection of medium-voltage motors, switchgear and controlgear. Part of the Mersen Limitor® aSJB/D series, it is engineered to interrupt damaging short-circuit currents while tolerating the repeated peak currents associated with motor starting.
Rated at 3.6 kV AC and 350 A, the F075583 provides dependable current-limiting protection for demanding industrial motor circuits. Its back-up operating characteristic makes it suitable for coordinated protection systems where overload protection is provided separately and the fuse is required to clear high-level faults rapidly.
The fuse-link features a robust melamine fibreglass insulating body, silver-plated copper fuse elements and silver-plated brass terminals. An integrated 20 N striker provides clear operation indication and can actuate compatible switchgear mechanisms following fuse operation.
Key Advantages
- High-voltage back-up fuse designed for motor protection.
- 3.6 kV AC rated voltage for medium-voltage systems.
- 350 A rated current for high-power motor circuits.
- Designed to withstand 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 performance reduces thermal and mechanical fault stress.
- Durable melamine fibreglass body for demanding industrial environments.
Key Features
- Mersen Limitor® aSJB/D back-up fuse series.
- Manufacturer item number F075583.
- Catalogue number 45ASB36V350P-2.
- 3.6 kV AC IEC rated voltage.
- 350 A rated current.
- 60 kA maximum breaking capacity.
- 2,400 A minimum interrupting rating.
- Total clearing I²t of 1,700 kA²s at rated voltage.
- IEC 60644 motor fuse coefficient K of 0.51.
- Integrated striker indication system.
- Clip-mounted cylindrical terminal construction.
- RoHS-compliant high-voltage IEC fuse-link.
Reliable Protection for Medium-Voltage Motors
Medium-voltage motors can draw substantial inrush currents during starting, so their protective fuse-links must tolerate repeated current peaks without unnecessary operation. The Mersen F075583 is designed for this purpose, providing a controlled motor protection characteristic while remaining capable of interrupting severe short-circuit currents.
Its current-limiting action helps reduce the peak fault current and associated let-through energy before they can damage motor windings, cables, contactors or switchgear. As a back-up fuse, the F075583 should be coordinated with suitable overload protection and selected according to the motor starting conditions, rated current and prospective fault level.
Typical Applications
- Medium-voltage induction motor protection.
- Industrial motor control centres.
- Pumps, compressors and ventilation motors.
- Conveyors and material handling systems.
- Mining and mineral-processing machinery.
- Oil, gas and petrochemical installations.
- Medium-voltage switchgear and controlgear.
- Manufacturing and process automation systems.
