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MERSEN FUSE 500V CP 14X51 AM 45A S/I FR14AM50V45
Mersen FR14AM50V45 14 × 51 mm aM cylindrical fuse-link rated at 45 A and 500 V AC, with a 120 kA breaking capacity for industrial motor circuit protection.
£1.65
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.
Technical Specifications
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| Current | 45 A | |
|---|---|---|
| Voltage | 500 V | |
| Device Type | Fuse link | |
| Fuse Type | Cylindrical | |
| Fuse Size | 14x51 mm | |
| Fuse Class | aM | |
| Manufacturer | Mersen | |
| Series | FR14AM | |
| Model | FR14AM50V45 | |
| Manufacturer item number | L211035 | |
| EAN | 8430399008776 | |
| Product type | Cylindrical fuse-link | |
| Fuse characteristic | aM partial range | |
| Rated current | 45 A | |
| Rated voltage | 500 V AC | |
| Breaking capacity | 120 kA AC | |
| Fuse size | 14 × 51 mm | |
| Product diameter | 14.3 mm | |
| Product length | 51 mm | |
| Indicator | None | |
| Terminal type | Ferrule | |
| Terminal material | Silver-plated copper | |
| Body material | Ceramic | |
| Mounting type | Clip mounting | |
| Power dissipation at rated current | 2.85 W | |
| Product weight | Approx. 21 g | |
| RoHS compliant | Yes | |
| HS Code | 85361050 | |
| Country of Manufacture | Tunisia |
Frequently Asked Questions
What is the Mersen FR14AM50V45 used for?
It is used to provide short-circuit protection for motors, motor starters, contactors and associated industrial switchgear.
What does the aM fuse characteristic mean?
The aM classification identifies a partial-range motor fuse designed primarily for short-circuit protection. A suitable overload relay is required for complete motor circuit protection.
What are the current and voltage ratings?
The FR14AM50V45 has a rated current of 45 A and a rated voltage of 500 V AC.
What is the breaking capacity of this fuse-link?
The fuse-link has a rated AC breaking capacity of 120 kA.
What fuse holder is required?
The FR14AM50V45 requires a compatible clip-mounted fuse holder designed for standard 14 × 51 mm cylindrical fuse-links.
Trusted by Industrial Professionals Worldwide
Mersen cylindrical fuse-links are trusted by electrical engineers, panel builders and machine manufacturers for dependable motor circuit protection, high fault interruption capability and reliable operation in demanding industrial installations.
