Why Choose the Mersen FR14AM50V45 Cylindrical Fuse-Link?
The Mersen FR14AM50V45 is a high-performance aM cylindrical fuse-link designed to provide dependable short-circuit protection for motor circuits, industrial switchgear and electrical machinery. Part of Mersen's established low-voltage IEC fuse range, it combines effective current limitation with a durable 14 × 51 mm ceramic body.
As an aM partial-range fuse-link, the FR14AM50V45 is designed to withstand normal motor starting currents while rapidly interrupting dangerous short-circuit currents. It should be used alongside suitable overload protection, such as a motor overload relay, to provide coordinated protection for motors, contactors and associated switchgear.
Rated at 45 A and 500 V AC, the FR14AM50V45 provides a high 120 kA breaking capacity. Its compact cylindrical construction and silver-plated copper ferrules make it suitable for compatible fuse holders in industrial control panels, motor control centres and OEM machinery.
Key Advantages
- Reliable short-circuit protection for industrial motor circuits.
- 45 A rated current for demanding motor control applications.
- 500 V AC IEC rating for low-voltage industrial systems.
- 120 kA breaking capacity for effective interruption of severe fault currents.
- Current-limiting performance helps reduce thermal and mechanical damage.
- Compact 14 × 51 mm format saves space inside electrical panels.
Key Features
- Mersen FR14AM cylindrical fuse-link series.
- aM partial-range fuse characteristic.
- 45 A rated current.
- 500 V AC rated voltage.
- 14 × 51 mm cylindrical fuse size.
- 120 kA AC breaking capacity.
- High-strength ceramic insulating body.
- Silver-plated copper ferrule terminals.
- Clip mounting in a compatible cylindrical fuse holder.
- RoHS-compliant construction.
Reliable Protection for Industrial Motor Circuits
The Mersen FR14AM50V45 protects motor circuits by limiting and interrupting unacceptable short-circuit currents before they can cause serious damage to contactors, motor starters, cables and associated switchgear. Its aM operating characteristic allows normal motor starting currents to pass without unnecessary fuse operation.
The fuse-link cuts off high fault currents while maintaining low thermal energy let-through. This helps reduce electrical and mechanical stress on downstream components, improving system reliability and supporting safer operation in industrial motor control installations.
Typical Applications
- Industrial motor starter circuits.
- Motor control centres and switchgear.
- Manufacturing and processing machinery.
- Pumps, fans and compressor systems.
- Automation and control panels.
- OEM equipment and machine-building applications.
