Why Choose the Mersen H076482 High-Voltage Motor Protection Fuse?
The Mersen H076482, catalogue number 45ASB120V100P-3, is a high-voltage DIN back-up fuse-link specifically engineered for the protection of medium-voltage motors against damaging short-circuit currents. As part of the Mersen Limitor® aSJB/D series, it is designed to withstand the repeated peak currents associated with motor starting while providing dependable fault protection.
Rated at 12 kV AC and 100 A, this current-limiting fuse rapidly interrupts high fault currents, helping to reduce thermal and mechanical stress on motors, cables, switchgear and associated equipment. Its proven construction ensures reliable performance in demanding industrial and utility environments.
Manufactured with a durable melamine fibreglass body, silver-plated fuse elements and silver-plated brass end caps, the H076482 incorporates a 20 N striker for operating compatible switchgear or providing fuse indication. The fuse measures approximately 50.8 mm in diameter and 442 mm in length.
Key Advantages
- Designed specifically for medium-voltage motor protection.
- 12 kV AC rated voltage for industrial power systems.
- 100 A rated current.
- Current-limiting operation reduces fault energy.
- Withstands repeated motor starting currents.
- 20 N striker for switchgear operation or fuse indication.
- High-quality silver and fibreglass construction for long service life.
- Suitable for medium-voltage switchgear and motor starters.
Key Features
- Mersen Limitor® aSJB/D motor protection fuse.
- 12 kV AC IEC rated voltage.
- 100 A rated current.
- 50.8 mm fuse diameter.
- 442 mm overall length.
- 20 N striker mechanism.
- Designed for repeated motor starting duty.
- Silver-plated fuse elements.
- Silver-plated brass end caps.
- Melamine fibreglass insulating body.
- RoHS compliant.
Reliable Protection for Medium-Voltage Motors
The Mersen H076482 has been developed specifically for high-voltage motor circuits where frequent starting currents occur. Unlike standard transformer fuses, the Limitor® aSJB/D range is designed to withstand repeated motor inrush currents while still providing rapid interruption of damaging short-circuit faults.
Its current-limiting characteristics help reduce damage to motors and switchgear while the integrated striker allows compatible switching devices to disconnect the circuit safely after fuse operation.
Typical Applications
- Medium-voltage motor starters.
- Industrial motor protection.
- Mining and heavy industry.
- Water and wastewater pumping stations.
- Process manufacturing plants.
- High-voltage switchgear.
- Utility and infrastructure installations.
