Why Choose the Mersen G076481 High-Voltage Motor Protection Fuse?
The Mersen G076481, catalogue reference 45ASB120V80P-3, is a high-voltage DIN back-up fuse-link specifically designed to protect medium-voltage motors against damaging short-circuit currents. As part of the Mersen Limitor® aSJB/D series, it is engineered to withstand the repeated peak currents associated with motor starting whilst providing reliable current limitation and dependable fault interruption.
Rated at 12 kV AC and 80 A, the G076481 is intended for installation within compatible medium-voltage motor control switchgear. Constructed using a melamine fibreglass body with pure silver fuse elements and silver-plated brass end caps, it delivers excellent electrical performance and long service life.
The fuse incorporates an integrated 20 N striker for operation indication and activation of compatible switchgear mechanisms. Its 60 kA breaking capacity rapidly interrupts severe fault currents, helping minimise damage to motors, starters and associated electrical equipment.
Key Advantages
- High-voltage motor protection fuse for medium-voltage motors.
- 12 kV AC rated voltage.
- 80 A rated current.
- Designed to withstand repeated motor starting currents.
- 60 kA breaking capacity for dependable fault interruption.
- Integrated 20 N striker for indication and switchgear operation.
- Current-limiting design reduces thermal and mechanical fault stress.
- Manufactured using high-quality silver and melamine fibreglass materials.
Key Features
- Mersen Limitor® aSJB/D motor protection fuse series.
- Manufacturer item number G076481.
- Catalogue number 45ASB120V80P-3.
- 12 kV AC IEC rated voltage.
- 80 A rated current.
- 60 kA maximum breaking capacity.
- 416 A minimum breaking current.
- Total clearing I²t of 48 kA²s.
- Power dissipation of 41 W at 0.7 In.
- Integrated 20 N striker.
- Coefficient K = 0.51 in accordance with IEC 60644.
- DIN clip-mounted construction.
Reliable Protection for Medium-Voltage Motors
The Mersen G076481 is engineered to protect medium-voltage motors against severe short-circuit faults whilst tolerating the repeated inrush currents generated during motor starting. Its current-limiting characteristics reduce the energy released during fault conditions, helping extend the service life of motors, contactors and switchgear.
The integrated striker provides immediate indication of fuse operation and can activate compatible switchgear trip mechanisms, improving safety and reducing maintenance response times in industrial motor control applications.
Typical Applications
- Medium-voltage motor protection.
- Motor control centres.
- Industrial pumps and compressors.
- Mining and process industries.
- Water and wastewater treatment plants.
- Power generation facilities.
- Air-insulated switchgear.
- Industrial manufacturing plants.
