Why Choose the Mersen FR22AM69V20 Cylindrical Fuse Link?
The Mersen FR22AM69V20 is a high-performance aM cylindrical fuse link designed to provide reliable short-circuit protection for motor circuits and industrial electrical equipment. Part of the established Mersen 22 × 58 mm IEC ferrule fuse range, it is suitable for installations where motors and other inductive loads generate high starting currents.
Its aM operating characteristic allows normal motor starting currents to pass without unnecessary fuse operation while rapidly interrupting damaging short-circuit currents. The fuse is intended for use alongside a suitable overload protection device, such as a thermal overload relay, electronic motor protection relay or motor protection circuit breaker.
With a rated current of 20 A, a rated voltage of 690 V AC and a high breaking capacity of 120 kA, the FR22AM69V20 provides dependable protection for motor starters, control panels, switchgear assemblies and industrial machinery. This version is supplied without a striker.
Key Advantages
- Purpose-designed aM characteristic for motor circuit protection.
- 20 A current rating for industrial motors and inductive loads.
- 690 V AC rated voltage for demanding low-voltage installations.
- High 120 kA breaking capacity for reliable fault interruption.
- Current-limiting performance helps reduce thermal and mechanical fault stress.
- Compact 22 × 58 mm cylindrical format for panel installation.
Key Features
- Mersen 22 × 58 mm aM cylindrical fuse-link series.
- 20 A rated current.
- 690 V AC rated voltage.
- Partial-range protection designed for motor circuits.
- High current-limiting performance and low thermal let-through.
- Durable ceramic body for dependable operation.
- Silver-plated contacts for reliable electrical conductivity.
- Supplied without a striker or indicator.
Reliable Short-Circuit Protection for Motor Circuits
The Mersen FR22AM69V20 is engineered to interrupt severe fault currents while tolerating the temporary inrush currents produced during motor starting. Its current-limiting action helps reduce the energy allowed to pass through the circuit during a fault, protecting contactors, cables, switchgear and connected machinery from excessive thermal and mechanical stress.
As an aM partial-range fuse, the FR22AM69V20 does not provide complete overload protection by itself. It should be coordinated with a correctly selected overload relay or another suitable motor protection device to provide comprehensive protection against both overloads and short circuits.
Typical Applications
- Industrial motor starters.
- Motor control centres.
- Machinery control panels.
- Pumps, fans and conveyor systems.
- Industrial switchgear assemblies.
- OEM automation and manufacturing equipment.
