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MERSEN FUSE 690V CP 14X51 AM 4A S/I FR14AM69V4

MERSEN FUSE 690V CP 14X51 AM 4A S/I FR14AM69V4

Mersen FR14AM69V4 14 × 51 mm aM cylindrical fuse-link rated 4 A, 690 V AC with 120 kA breaking capacity for industrial motor circuit protection.

SKU: FR14AM69V4Alt SKU: FR14AM69V4MPN: K214622
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List Price £1.75 ex VAT
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Why Choose the Mersen FR14AM69V4 Cylindrical Fuse-Link?

The Mersen FR14AM69V4 is a premium quality aM cylindrical fuse-link designed to provide dependable short-circuit protection for motor circuits and industrial electrical equipment. Part of the trusted Mersen FR14AM series, this 14 × 51 mm IEC fuse delivers high breaking capacity and exceptional reliability for demanding industrial applications.

Designed specifically for motor protection, the FR14AM69V4 provides fast fault interruption while allowing normal motor starting currents to pass. Its ceramic body and precision manufactured fuse element ensure consistent performance, helping to minimise equipment damage and reduce costly downtime.

With a 4 A rated current, 690 V AC IEC voltage rating and an impressive 120 kA breaking capacity, this fuse-link is ideal for protecting motor starters, contactors, industrial machinery and automation equipment operating in demanding electrical installations.

Key Advantages

  • Designed specifically for motor circuit short-circuit protection.
  • 690 V AC IEC rating for industrial applications.
  • 120 kA breaking capacity provides excellent fault protection.
  • Compact 14 × 51 mm cylindrical design.
  • Reliable ceramic construction for long service life.
  • Suitable for OEM machinery, MCCs and industrial control panels.

Key Features

  • Mersen FR14AM Series.
  • aM partial range fuse-link.
  • 4 A rated current.
  • 690 V AC IEC rated voltage.
  • 14 × 51 mm cylindrical fuse.
  • 120 kA AC breaking capacity.
  • Ceramic body construction.
  • Silver-plated ferrules.
  • Suitable for compatible IEC fuse holders.
  • RoHS compliant.

Reliable Protection for Industrial Motor Circuits

The FR14AM69V4 has been engineered to provide dependable protection against high fault currents while accommodating the temporary inrush currents associated with motor starting. This makes it particularly suitable for motor control applications where overload protection is provided separately.

Its high current limiting performance helps reduce thermal and mechanical stress on downstream equipment, extending the life of motor starters, contactors and associated switchgear while improving overall system reliability.

Typical Applications

  • Motor starter protection.
  • Industrial machinery.
  • Motor control centres (MCCs).
  • Automation control panels.
  • OEM equipment.
  • Electrical distribution systems.

Technical Specifications

Current 4 A
Voltage 690 V
Manufacturer Mersen
Series FR14AM
Model FR14AM69V4
Product type Cylindrical fuse-link
Fuse characteristic aM
Rated current 4 A
Rated voltage 690 V AC (IEC)
Breaking capacity 120 kA
Fuse size 14 × 51 mm
Indicator None
Body material Ceramic
Power dissipation 0.28 W
Weight Approx. 21 g
Compliance IEC, RoHS
HS Code 85361010
Country of Manufacture Tunisia
Device Type Fuse link
Fuse Type Cylindrical
Fuse Size 14x51 mm
Fuse Class aM

Frequently Asked Questions

What is the Mersen FR14AM69V4 used for?

It provides short-circuit protection for industrial motor circuits and associated electrical equipment when used with suitable overload protection.

What does an aM fuse-link protect?

An aM fuse-link protects against short circuits in motor circuits and is intended to be used alongside a dedicated overload relay.

What is the rated current of this fuse?

The FR14AM69V4 has a rated current of 4 A.

What voltage is this fuse designed for?

This fuse is rated for operation on systems up to 690 V AC in accordance with IEC standards.

Where is this fuse typically installed?

It is commonly installed in industrial motor control panels, switchgear, automation systems and OEM machinery using compatible 14 × 51 mm fuse holders.

Trusted by Industrial Professionals Worldwide

Mersen cylindrical fuse-links are trusted by panel builders, automation engineers and OEM manufacturers worldwide for dependable motor protection, high fault interruption capability and long-term reliability in demanding industrial environments.

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