Why Choose the Mersen N075521 High Voltage Motor Protection Fuse?
The Mersen N075521 is a high performance high voltage back-up fuse designed to provide dependable short-circuit protection for medium voltage motors operating within industrial power distribution and motor control systems. Manufactured as part of the trusted Mersen Limitor® aSJB/D fuse series, this fuse is engineered to safeguard valuable equipment while maintaining reliable operation in demanding electrical installations.
Specifically developed for motor protection applications, the N075521 incorporates a 20 N striker mechanism for integration with switchgear and protection systems, allowing rapid fault indication and enhanced safety. Premium construction materials including silver-plated conductive components and a reinforced melamine fibreglass body ensure long service life and consistent electrical performance.
Rated at 3.6 kV AC with a 100 A current rating, the Mersen N075521 is ideal for protecting medium voltage motors, switchgear assemblies, substations and industrial distribution equipment where reliable fault interruption is essential.
Key Advantages
- Designed specifically for medium voltage motor protection.
- 3.6 kV AC IEC rated voltage.
- 100 A current rating for industrial applications.
- Integrated 20 N striker for switchgear operation.
- High breaking capacity for dependable fault clearance.
- Manufactured using premium silver-plated conductive materials.
- Robust melamine fibreglass body for long operational life.
- Fully compliant with applicable IEC requirements for high voltage back-up fuses.
Key Features
- Mersen Limitor® aSJB/D high voltage back-up fuse.
- Catalogue number: 45ASB36V100P-2.
- Rated voltage: 3.6 kV AC.
- Rated current: 100 A.
- Fuse size: Ø50.8 mm × 292 mm.
- Integrated 20 N striker mechanism.
- Suitable for medium voltage motor protection.
- Designed for installation within switchgear and controlgear.
Reliable High Voltage Motor Protection
Medium voltage back-up fuses play a vital role in protecting motors and associated switchgear against damaging short-circuit faults. By rapidly interrupting fault currents, they minimise equipment damage, reduce downtime and help maintain safe operation of industrial electrical systems.
The Mersen Limitor® series has been trusted worldwide for decades within substations, industrial plants, utilities and OEM equipment. Its precision manufacturing and dependable performance make it an excellent choice wherever reliable medium voltage protection is required.
Typical Applications
- Medium voltage motor protection.
- Industrial switchgear.
- Motor control centres.
- Power distribution systems.
- Electrical substations.
- OEM medium voltage equipment.
- Mining and heavy industry.
- Process manufacturing facilities.
