Why Choose the Mersen FR14AM50V40P Cylindrical Fuse with Striker?
The Mersen FR14AM50V40P is a high-performance 14 × 51 mm aM cylindrical fuse-link with striker designed to provide reliable short-circuit protection for motors, motor starters and associated industrial switchgear. As part of the established Mersen FR14 aM fuse range, it offers effective current limitation and low thermal energy let-through for demanding motor control applications.
Its aM partial-range operating characteristic allows the fuse to withstand the high inrush currents generated during motor starting while rapidly interrupting dangerous short-circuit currents. As an aM fuse-link, it should normally be combined with a suitable overload relay, motor protection relay or motor circuit breaker to provide complete motor circuit protection.
With a rated current of 40 A, an IEC rated voltage of 500 V AC and a compact 14 × 51 mm cylindrical format, the FR14AM50V40P is suitable for motor control centres, industrial machinery and OEM equipment. Its integrated mechanical striker can operate a compatible auxiliary contact when the fuse has operated.
Key Advantages
- Designed specifically for motor circuit short-circuit protection.
- 40 A rated current for industrial motor applications.
- 500 V AC IEC rated voltage.
- aM characteristic accommodates normal motor starting currents.
- Integrated mechanical striker for indication or auxiliary switching.
- High current-limiting performance helps reduce stress on downstream equipment.
Key Features
- Mersen FR14 aM cylindrical fuse range.
- 14 × 51 mm cylindrical fuse-link format.
- 40 A rated current.
- 500 V AC rated voltage.
- aM partial-range motor protection characteristic.
- Integrated striker for blown-fuse indication.
- High-strength ceramic fuse body.
- Silver-plated contacts for dependable electrical conductivity.
Reliable Motor Protection with Striker Indication
The Mersen FR14AM50V40P protects motors, contactors, cables and switchgear from damaging short-circuit currents by limiting peak fault current and reducing the thermal energy passed into downstream components. This helps minimise equipment damage, electrical hazards and unplanned production downtime.
When the fuse operates, its integrated striker extends mechanically. When installed in a compatible fuse holder, this movement can activate an auxiliary contact for remote fault indication, alarm signalling, control-system feedback or equipment shutdown, helping maintenance personnel locate faults quickly.
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.
