Why Choose the Mersen Q078168 High Voltage Motor Protection Fuse?
The Mersen Q078168 is a premium high voltage motor protection back-up fuse-link developed to safeguard medium voltage motors, switchgear and associated electrical equipment against damaging short-circuit currents. As part of the proven Mersen Limitor® aSJB/D series, it is specifically engineered for motor protection applications where repeated motor starting currents and dependable fault interruption are essential.
Manufactured using pure silver fuse elements, silver-plated brass terminals and a durable melamine fibreglass body, the fuse delivers excellent electrical performance, low power losses and reliable operation throughout its service life. The integrated 20 N striker provides mechanical indication and can operate compatible switchgear or signalling devices following fuse operation.
With a rated voltage of 7.2 kV AC, a rated current of 160 A and a high breaking capacity of 50 kA, the Q078168 is ideally suited to protecting medium voltage motors used in industrial plants, utilities and critical infrastructure.
Key Advantages
- Designed specifically for medium voltage motor protection.
- 7.2 kV AC IEC voltage rating.
- 160 A continuous current rating.
- 50 kA breaking capacity for dependable fault interruption.
- Integrated 20 N striker for indication and switchgear operation.
- Current-limiting design reduces fault energy.
- Engineered to withstand repeated motor starting currents.
- Manufactured using premium silver conductive components.
Key Features
- Mersen Limitor® aSJB/D motor protection fuse-link.
- Catalogue number: 45ASB72V160P-2.
- Rated voltage: 7.2 kV AC.
- Rated current: 160 A.
- Fuse body size: 67 mm diameter × 292 mm length.
- Overall length: 358 mm.
- Integrated 20 N striker indication system.
- Pure silver fuse elements.
- Silver-plated brass cylindrical terminals.
- Melamine fibreglass insulating body.
Reliable Protection for Medium Voltage Motors
Motor protection back-up fuse-links rapidly interrupt high fault currents whilst tolerating the repeated inrush currents generated during motor starting. Their current-limiting characteristics reduce thermal and mechanical stress on motors, cables and switchgear, helping improve equipment reliability and minimise downtime.
The Mersen Limitor® aSJB/D range has been developed specifically for medium voltage motor applications where dependable protection, high breaking capacity and long service life are essential.
Typical Applications
- Medium voltage electric motors.
- Motor control centres.
- Industrial processing plants.
- Mining and quarrying equipment.
- Water treatment facilities.
- Power generation plants.
- HV switchgear assemblies.
- OEM motor starter equipment.
