Why Choose the Mersen A085583 High-Voltage Motor Fuse?
The Mersen A085583, catalogue number 45ASD72V160P-3, is a high-performance high-voltage back-up fuse developed specifically for medium-voltage motor protection. Part of the established Mersen Limitor® aSJB/D series, it protects motors, motor pumps, switchgear and associated equipment against damaging short-circuit currents.
This fuse is engineered to withstand the repeated peak currents produced during motor starting while remaining ready to interrupt genuine electrical faults. Its high current-limiting performance helps reduce the thermal and mechanical stress imposed on motors, contactors, cables and switchgear during a short circuit.
With a rated voltage of 7.2 kV AC, a rated current of 160 A and a maximum breaking capacity of 50 kA, the A085583 provides dependable protection in demanding indoor high-voltage installations. A built-in 20 N striker supports mechanical fuse-operation indication and may operate compatible switchgear tripping mechanisms.
Key Advantages
- Specially designed for high-voltage motor protection.
- 7.2 kV AC rated voltage for medium-voltage installations.
- 160 A rated current.
- High 50 kA breaking capacity.
- Withstands repeated peak currents associated with motor starting.
- Integrated 20 N striker for operation indication and tripping.
- High current limitation helps reduce fault energy and equipment stress.
- Low power losses support efficient continuous operation.
Key Features
- Mersen Limitor® aSJB/D back-up fuse-link.
- Manufacturer part number: A085583.
- Catalogue number: 45ASD72V160P-3.
- Rated voltage: 7.2 kV AC.
- Rated current: 160 A.
- Maximum breaking capacity: 50 kA.
- Minimum breaking current: 880 A.
- Fuse dimensions: Approximately 50.8 × 442 mm.
- Indication system: 20 N striker.
- Clip-mounted cylindrical terminal configuration.
Reliable Protection for Medium-Voltage Motors
Medium-voltage motors can draw substantial transient currents during starting. The Mersen A085583 is designed to tolerate these repeated starting peaks without unnecessary operation while providing rapid interruption when a serious short-circuit fault occurs.
Its current-limiting action restricts the peak fault current and energy passed into the protected system. This helps safeguard motors, motor control equipment, cables and switchgear while reducing the potential for costly damage and extended production downtime.
Typical Applications
- Medium-voltage industrial motors.
- High-voltage motor pump protection.
- Motor control centres.
- Indoor medium-voltage switchgear.
- Industrial processing machinery.
- Water treatment and pumping installations.
- Mining, manufacturing and heavy-industry equipment.
