Why Choose the Mersen FR14AM50V4P Cylindrical Fuse-Link?
The Mersen FR14AM50V4P is a reliable aM cylindrical fuse-link designed to provide short-circuit protection for motors, motor starters and associated industrial control equipment. Manufactured by Mersen, it forms part of the established 14 × 51 mm IEC ferrule fuse range for demanding motor control applications.
Its aM partial-range operating characteristic allows normal motor starting currents to pass without unnecessary fuse operation while providing rapid, current-limiting protection against severe short-circuit faults. As an aM fuse-link, it should be coordinated with a suitable overload relay or motor protection device to provide complete protection across the motor circuit.
Rated at 4 A and 500 V AC, the FR14AM50V4P combines dependable electrical performance with a compact cylindrical format. Its integrated striker can operate a compatible auxiliary contact or signalling device when the fuse operates, supporting faster fault identification and improved system monitoring.
Key Advantages
- Purpose-designed for motor circuit short-circuit protection.
- 4 A rated current for low-current industrial motor applications.
- 500 V AC IEC rated voltage.
- Integrated striker for auxiliary signalling and fuse status monitoring.
- Current-limiting operation helps reduce thermal and mechanical fault stress.
- Compact 14 × 51 mm cylindrical format for industrial fuse holders.
Key Features
- Mersen FR14AM50V4P cylindrical fuse-link.
- aM utilisation category for motor circuit protection.
- 4 A rated current.
- 500 V AC rated voltage.
- 14 × 51 mm IEC cylindrical size.
- Integrated striker for operation of a compatible auxiliary contact.
- Ceramic body for high thermal and mechanical durability.
- Silver-plated contacts for dependable electrical performance.
- Suitable for motor starters, switchgear and industrial control panels.
Reliable Short-Circuit Protection for Motor Circuits
Industrial motors can draw significantly more current during start-up than during normal operation. The aM characteristic of the Mersen FR14AM50V4P allows these temporary starting currents to pass while rapidly interrupting dangerous short-circuit currents that could damage motors, conductors, contactors and switching equipment.
Because the FR14AM50V4P is a partial-range fuse-link, it does not provide overload protection across the complete overcurrent range. It should therefore be installed alongside a correctly selected overload relay or motor protection circuit breaker to provide coordinated motor circuit protection.
Typical Applications
- Industrial motor starters.
- Motor control centres.
- Contactors and overload relay assemblies.
- Industrial switchgear and control panels.
- Machine building and OEM equipment.
- Pumps, fans, conveyors and processing machinery.
