Why Choose the Mersen K078163 High Voltage Motor Protection Fuse?
The Mersen K078163 is a high performance high voltage back-up fuse for motor protection designed to protect medium voltage motors against damaging short-circuit currents. As part of the proven Mersen Limitor® aSJB/D series, it is specifically engineered to withstand the repeated inrush currents associated with motor starting while delivering dependable current-limiting protection under fault conditions.
Manufactured in accordance with IEC 60644, the K078163 features pure silver fuse elements, silver-plated brass end caps and a melamine fibreglass body to provide excellent electrical performance and long service life. The integrated 20 N striker allows operation with compatible switchgear trip mechanisms, enhancing system protection and operational safety.
With a rated voltage of 7.2 kV AC, a 50 A current rating and a compact 50.8 mm × 292 mm DIN format, the Mersen K078163 is ideal for medium voltage motor starters, motor control centres and industrial power distribution systems.
Key Advantages
- Purpose-built for medium voltage motor protection.
- 7.2 kV AC rated voltage for industrial motor applications.
- 50 A current rating for compatible motor circuits.
- Designed to withstand repeated motor starting currents.
- Integrated 20 N striker for compatible switchgear mechanisms.
- Current-limiting design helps minimise equipment damage during faults.
Key Features
- Mersen Limitor® aSJB/D motor protection fuse.
- Catalogue number: 45ASB72V50P-2.
- 7.2 kV AC rated voltage.
- 50 A rated current.
- 50.8 mm diameter × 292 mm length.
- Integrated 20 N striker.
- Melamine fibreglass fuse body.
- Pure silver fuse elements with silver-plated brass end caps.
Reliable Protection for Medium Voltage Motors
Motor protection fuse-links are specifically engineered to tolerate the repeated peak currents generated during motor starting while rapidly interrupting damaging short-circuit currents. Their current-limiting performance helps protect motors, cables and switchgear from excessive thermal and mechanical stress.
The Mersen Limitor® aSJB/D range has been developed for demanding industrial motor applications where dependable protection, long service life and reliable operation are essential.
Typical Applications
- Medium voltage motor protection.
- Motor control centres.
- Industrial switchgear.
- Mining and quarrying equipment.
- Water and wastewater treatment plants.
- Power generation and utility installations.
