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MERSEN FUSE 500V CP 14X51 AM 25A P FR14AM50V25P
Mersen FR14AM50V25P 25 A 500 V AC aM cylindrical fuse link with striker, 14 x 51 mm ceramic body and 120 kA breaking capacity for motor circuit short-circuit protection.
£2.94
Why Choose the Mersen FR14AM50V25P Cylindrical Fuse Link?
The Mersen FR14AM50V25P is a reliable 14 × 51 mm cylindrical aM fuse link designed to provide high-performance short-circuit protection for motors, transformers and other industrial loads with high inrush currents. Rated at 25 A and 500 V AC, it is suitable for use in demanding low-voltage electrical distribution and motor control applications.
As an aM partial-range fuse, the FR14AM50V25P is specifically intended to protect motor circuits and associated switchgear against damaging short-circuit currents. It should be used alongside a suitable overload protection device, such as a thermal overload relay, to provide complete motor circuit protection.
The fuse features a durable ceramic body, silver-plated copper ferrule contacts and an integrated striker indication system. The striker can provide visible indication or operate an auxiliary contact in a compatible fuse holder, helping maintenance teams identify a operated fuse quickly and minimise equipment downtime.
Key Advantages
- Reliable short-circuit protection for motors and high-inrush loads.
- 25 A current rating for industrial motor control applications.
- 500 V AC rated voltage suitable for low-voltage power systems.
- High 120 kA AC breaking capacity for effective fault interruption.
- Integrated striker indication system for fuse operation signalling.
- Compact 14 × 51 mm cylindrical format for space-efficient installation.
Key Features
- Mersen FR14 aM cylindrical fuse-link series.
- 25 A rated current.
- 500 V AC IEC rated voltage.
- aM partial-range operating characteristic.
- 120 kA rated AC breaking capacity.
- Integrated striker for local or remote fuse operation indication.
- High-quality ceramic insulating body.
- Silver-plated copper ferrule contacts.
- Compliant with relevant IEC 60269 fuse standards.
Reliable Short-Circuit Protection for Motor Circuits
The Mersen FR14AM50V25P uses an aM operating characteristic developed for circuits containing motors and other equipment with high starting currents. This characteristic allows normal motor inrush current to pass while providing rapid interruption when a severe short-circuit fault occurs.
Because an aM fuse provides partial-range protection, it is normally coordinated with a separate overload protection device. When correctly selected and coordinated, this combination helps protect contactors, motor starters, cables and other switchgear against the thermal and electrodynamic effects of high fault currents.
Typical Applications
- Industrial motor control circuits.
- Direct-on-line and reversing motor starters.
- Motor control centres and distribution panels.
- Contactors and associated switchgear protection.
- Transformers and inductive industrial loads.
- Pumps, fans, conveyors and compressors.
- Manufacturing and process automation equipment.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Current | 25 A | |
| Voltage | 500 V | |
| Device Type | Fuse link | |
| Fuse Type | Cylindrical | |
| Fuse Size | 14x51 mm | |
| Fuse Class | aM | |
| Manufacturer | Mersen | |
| Series | FR14 aM Cylindrical Fuse Links | |
| Catalogue number | FR14AM50V25P | |
| Item number | H213608 | |
| Product type | Cylindrical motor protection fuse link | |
| Fuse utilisation category | aM | |
| Rated current | 25 A | |
| Rated voltage | 500 V AC | |
| Rated breaking capacity | 120 kA AC | |
| Fuse size | 14 × 51 mm | |
| Product diameter | 14.3 mm | |
| Product length | 51 mm | |
| Indication system | Striker | |
| Terminal type | Ferrule | |
| Terminal material | Silver-plated copper | |
| Body material | Ceramic | |
| Mounting method | Fuse holder / mounting clip | |
| Power dissipation at rated current | 1.55 W | |
| Product weight | 21 g | |
| EAN | 8430399009025 | |
| RoHS compliant | Yes | |
| HS Code | 85361050 | |
| Country of Manufacture | Tunisia |
Frequently Asked Questions
What is the Mersen FR14AM50V25P used for?
The FR14AM50V25P is used to protect motors, transformers and other high-inrush industrial loads against damaging short-circuit currents.
What are the electrical ratings of this fuse?
The fuse has a rated current of 25 A, a rated voltage of 500 V AC and an AC breaking capacity of 120 kA.
Does an aM fuse provide overload protection?
No. An aM fuse provides partial-range short-circuit protection and should normally be used with a suitable overload relay or other overload protection device.
What does the striker on the fuse do?
The integrated striker indicates when the fuse has operated and can activate an auxiliary contact when installed in a compatible fuse holder.
What size fuse holder is required?
The FR14AM50V25P requires a compatible fuse holder designed for 14 × 51 mm cylindrical fuse links.
Trusted Industrial Circuit Protection from Mersen
Mersen cylindrical fuse links are widely used by electrical engineers, machine builders and industrial maintenance teams for dependable protection of motor circuits, switchgear and low-voltage electrical equipment.
