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MERSEN FUSE 690V CP 14X51 AM 20A S/I FR14AM69V20
Mersen FR14AM69V20 14×51 mm aM cylindrical fuse-link rated at 20 A and 690 V AC for industrial motor circuit and switchgear protection.
£1.17
Why Choose the Mersen FR14AM69V20 Cylindrical Fuse-Link?
The Mersen FR14AM69V20 is a high-performance aM cylindrical fuse-link designed to provide dependable short-circuit protection for motor circuits and industrial switchgear. Manufactured as part of the trusted Mersen 14×51 mm ferrule fuse range, it is engineered to protect motors and associated equipment operating on 690 V AC electrical systems.
Featuring a ceramic body with silver-plated contacts, the FR14AM69V20 delivers excellent current-limiting performance and high breaking capacity, helping minimise damage to electrical equipment during fault conditions. As an aM partial-range fuse, it is specifically intended for motor circuit protection when used alongside suitable overload protection devices.
With a 20 A current rating, 14×51 mm size, and compliance with IEC standards, this fuse-link is ideal for use within motor starters, control panels, industrial machinery and automation systems requiring reliable overcurrent protection.
Key Advantages
- Designed for motor circuit short-circuit protection.
- 20 A current rating for industrial applications.
- 690 V AC IEC voltage rating.
- aM characteristic for partial-range motor protection.
- 14×51 mm cylindrical format fits standard fuse holders.
- Ceramic body with silver-plated contacts for long service life.
- High breaking capacity helps protect valuable equipment.
- Manufactured by Mersen, a global leader in circuit protection.
Key Features
- Mersen FR14AM69V20 cylindrical fuse-link.
- aM utilisation category.
- 20 A rated current.
- 690 V AC rated voltage.
- 14×51 mm ferrule size.
- Ceramic fuse body construction.
- Silver-plated contact caps.
- IEC compliant industrial fuse-link.
- Suitable for motor starter and switchgear protection.
Reliable Protection for Industrial Motor Circuits
The Mersen FR14AM69V20 is engineered to rapidly disconnect high fault currents before they can damage motors, contactors and associated electrical equipment. Its aM characteristic makes it particularly suitable for protecting motor circuits where overload protection is provided separately.
Designed for demanding industrial environments, this fuse-link combines excellent current limitation with dependable performance, making it a trusted choice for machine builders, panel manufacturers and maintenance engineers.
Typical Applications
- Motor starters.
- Industrial control panels.
- Motor control centres (MCCs).
- Machine building and OEM equipment.
- Industrial switchgear.
- Automation systems.
- Manufacturing plants.
- Electrical distribution equipment.
Technical Specifications
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| Current | 20 A | |
|---|---|---|
| Voltage | 690 V | |
| Device Type | Fuse link | |
| Fuse Type | Cylindrical | |
| Fuse Size | 14x51 mm | |
| Fuse Class | aM | |
| Manufacturer | Mersen | |
| Series | Ferrule Fuse-links 14×51 aM 500 to 690 VAC | |
| Model | FR14AM69V20 | |
| Product type | Cylindrical fuse-link | |
| Fuse characteristic | aM (partial-range) | |
| Current rating | 20 A | |
| Rated voltage | 690 V AC | |
| Frequency | 50 / 60 Hz | |
| Fuse size | 14 × 51 mm | |
| Body material | Ceramic | |
| Contact material | Silver-plated | |
| Standards | IEC | |
| RoHS compliant | Yes | |
| Application | Motor circuit short-circuit protection | |
| HS Code | 85361050 | |
| Country of Manufacture | Tunisia |
Frequently Asked Questions
What is the Mersen FR14AM69V20 used for?
It provides short-circuit protection for motor circuits and industrial switchgear operating on systems up to 690 V AC.
What does the aM fuse characteristic mean?
An aM fuse is a partial-range fuse designed specifically for motor circuit protection against short-circuit faults and should be used with an appropriate overload protection device.
What is the current rating of this fuse?
The FR14AM69V20 has a 20 A current rating.
What size fuse is the FR14AM69V20?
This model is a standard 14 × 51 mm cylindrical ferrule fuse-link.
Is this fuse suitable for industrial applications?
Yes. It is designed for industrial motor protection, control panels, switchgear and OEM machinery operating to IEC standards.
Trusted by Industrial Professionals Worldwide
Mersen cylindrical fuse-links are widely trusted by electrical engineers, panel builders and OEM manufacturers for delivering dependable motor protection, high fault interruption capability and long-term reliability in industrial electrical systems.
