Why Choose the Mersen FR10AM50V20 Cylindrical Fuse?
The Mersen FR10AM50V20 is a high-performance 10 × 38 mm aM cylindrical fuse-link designed to provide reliable short-circuit protection for motors, motor starters and associated industrial switchgear. As part of the established Mersen FR10 aM fuse range, it delivers effective current limitation and low thermal energy let-through in demanding motor control applications.
Its aM partial-range operating characteristic allows the fuse to tolerate the high inrush currents produced during normal motor starting while rapidly interrupting dangerous short-circuit currents. As an aM fuse-link, it should be used alongside a correctly selected overload relay, motor protection relay or motor circuit breaker to provide complete motor circuit protection.
With a rated current of 20 A, an IEC rated voltage of 500 V AC and a high 120 kA breaking capacity, the FR10AM50V20 is suitable for industrial control panels, motor control centres and OEM machinery. Its compact cylindrical format enables straightforward installation in compatible 10 × 38 mm fuse holders.
Key Advantages
- Designed specifically for motor circuit short-circuit protection.
- 20 A rated current for industrial motor applications.
- 500 V AC IEC rated voltage.
- aM operating characteristic accommodates normal motor starting currents.
- 120 kA breaking capacity for effective high-fault-current interruption.
- Compact construction for space-conscious industrial control panels.
Key Features
- Mersen FR10 aM cylindrical fuse range.
- 10 × 38 mm cylindrical fuse-link format.
- 20 A rated current.
- 500 V AC rated voltage.
- aM partial-range motor protection characteristic.
- High current-limiting performance and low thermal let-through.
- High-strength ceramic insulating body.
- Silver-plated copper ferrule contacts.
Reliable Short-Circuit Protection for Motor Circuits
The Mersen FR10AM50V20 helps protect contactors, cables, motor starters and associated switchgear from destructive short-circuit currents. Its current-limiting performance reduces peak fault current and thermal energy, helping minimise equipment damage and improve the safety of industrial motor installations.
The aM characteristic is specifically designed for motor circuits and operates at currents above the normal motor starting range. Because it is a partial-range fuse, separate overload protection must be provided to protect the motor against sustained overload conditions.
Typical Applications
- Industrial motor starter circuits.
- Motor control centres and switchgear.
- Contactors and motor protection assemblies.
- Pumps, fans, conveyors and compressors.
- Industrial machinery and production equipment.
- OEM automation and machine-building systems.
