Why Choose the Mersen FR14AM69V0.25 Cylindrical Fuse Link?
The Mersen FR14AM69V0.25 is a high-quality 14 × 51 mm cylindrical aM fuse link designed to provide dependable short-circuit protection for motors, transformers and other industrial loads with high inrush currents. Rated at 0.25 A and 690 V AC, it is suited to low-current control, transformer and motor circuits operating at elevated industrial voltages.
As an aM utilisation category fuse, the FR14AM69V0.25 provides partial-range protection against damaging short-circuit currents while tolerating the temporary current peaks associated with transformer energisation and motor starting. It should be coordinated with a suitable overload relay, motor protection device or other overload protection system.
The fuse link features a durable ceramic body and silver-plated contacts for reliable electrical conductivity, effective current limitation and consistent long-term performance. Its standard non-indicating construction allows straightforward installation in compatible 14 × 51 mm cylindrical fuse holders.
Key Advantages
- Standard 14 × 51 mm cylindrical fuse-link format.
- 0.25 A rated current for low-current industrial protection circuits.
- 690 V AC IEC voltage rating.
- aM partial-range characteristic designed for short-circuit protection.
- 120 kA AC breaking capacity for reliable fault interruption.
- Current-limiting operation helps reduce thermal and mechanical stress during faults.
Key Features
- Mersen FR14 aM cylindrical fuse-link series.
- 14 × 51 mm nominal fuse size.
- 0.25 A rated current.
- 690 V AC rated voltage according to IEC.
- aM motor and transformer protection characteristic.
- 120 kA rated AC breaking capacity.
- Standard non-indicating fuse-link construction.
- Ceramic body with silver-plated ferrule contacts.
Motors and transformers can draw substantial temporary inrush currents during starting or energisation. The aM operating characteristic allows the Mersen FR14AM69V0.25 to tolerate these normal current peaks while responding rapidly to destructive short-circuit faults.
Because the FR14AM69V0.25 is a partial-range fuse, it does not provide complete overload protection. Coordinating it with a correctly selected overload relay or protective device helps safeguard cables, transformers, motors and associated control equipment against both overload and short-circuit conditions.
Typical Applications
- Industrial transformer protection circuits.
- Low-current motor control systems.
- Control transformers and auxiliary circuits.
- Industrial control panels and switchgear.
- Machinery and automation equipment.
- OEM electrical protection assemblies.
