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MERSEN FUSE 500V CP 14X51 AM 50A S/I FR14AM50V50
Mersen FR14AM50V50 14 x 51 mm aM cylindrical fuse link rated at 50 A and 500 V AC, providing high-capacity short-circuit protection for motors, transformers and industrial equipment.
£1.33
Why Choose the Mersen FR14AM50V50 Cylindrical Fuse Link?
The Mersen FR14AM50V50 is a robust 14 × 51 mm aM cylindrical fuse link designed to provide reliable short-circuit protection for motors, transformers and other industrial loads with high starting currents. As part of the established Mersen FR14 aM fuse series, it is suitable for demanding motor control and electrical distribution applications.
The aM operating characteristic is specifically intended for motor circuits. It allows normal motor starting currents to pass while rapidly interrupting dangerous short-circuit currents. As an aM fuse provides partial-range protection, it should be used alongside a correctly selected overload relay or other separate overload protection device.
With a rated current of 50 A, a rated voltage of 500 V AC and a high breaking capacity of 120 kA, the FR14AM50V50 provides dependable protection in motor starters, machinery and industrial control panels. Its compact, non-indicating design fits compatible 14 × 51 mm cylindrical fuse holders.
Key Advantages
- Purpose-designed aM fuse link for motor circuit protection.
- 50 A rated current for industrial motors and inductive loads.
- 500 V AC rating for low-voltage industrial systems.
- High 120 kA breaking capacity for dependable fault interruption.
- Accommodates normal motor starting and transformer inrush currents.
- Compact 14 × 51 mm cylindrical format for compatible fuse holders.
Key Features
- Mersen FR14 aM ferrule fuse series.
- 50 A rated current.
- 500 V AC rated voltage.
- 14 × 51 mm cylindrical fuse link.
- aM partial-range operating characteristic.
- Non-indicating design without striker.
- High interrupting capacity for industrial fault protection.
- Suitable for motors, transformers and loads with high inrush currents.
Reliable Short-Circuit Protection for Motor Circuits
The Mersen FR14AM50V50 is engineered to protect motor circuits against severe fault currents without operating during normal motor acceleration. Its time-current performance accommodates the temporary inrush current produced when motors, transformers and other inductive equipment are energised.
Because this is an aM partial-range fuse, it primarily provides short-circuit protection rather than complete overload protection. For a properly coordinated motor protection system, it should be combined with a thermal or electronic overload relay selected for the connected motor and operating conditions.
Typical Applications
- Industrial motor starters.
- Motor control centres.
- Three-phase motor circuits.
- Transformer protection.
- Industrial machinery and production equipment.
- OEM control panels and automation systems.
Technical Specifications
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| Current | 50 A | |
|---|---|---|
| Voltage | 500 V | |
| Device Type | Fuse link | |
| Fuse Type | Cylindrical | |
| Fuse Size | 14x51 mm | |
| Fuse Class | aM | |
| Manufacturer | Mersen | |
| Series | FR14 aM Ferrule Fuse Links | |
| Model | FR14AM50V50 | |
| Manufacturer reference | E211558 | |
| Product type | Cylindrical fuse link | |
| Fuse characteristic | aM | |
| Rated current | 50 A | |
| Rated voltage | 500 V AC | |
| Breaking capacity | 120 kA at 500 V AC | |
| Fuse size | 14 × 51 mm | |
| Diameter | 14 mm | |
| Length | 51 mm | |
| Indicator or striker | No | |
| Mounting method | Compatible cylindrical fuse holder | |
| Applicable standards | IEC 60269-1 and IEC 60269-2 | |
| HS Code | 85361050 | |
| Country of Manufacture | Tunisia |
Frequently Asked Questions
What is the Mersen FR14AM50V50 used for?
It is designed to provide short-circuit protection for motors, transformers and other industrial loads that produce high starting or inrush currents.
What is the current rating of this fuse?
The FR14AM50V50 has a rated current of 50 A.
What does the aM classification mean?
The aM classification identifies a partial-range motor fuse that protects against short-circuit currents while allowing normal motor starting currents to pass.
Does this fuse provide overload protection?
No. An aM fuse should be used with a separate overload relay or equivalent device to provide complete overload and short-circuit protection for the motor.
Does the FR14AM50V50 include a striker?
No. The FR14AM50V50 is the non-striker version. The corresponding product code ending in P identifies the version supplied with a striker.
Trusted by Industrial Electrical Professionals
Mersen cylindrical fuse links are widely specified by panel builders, machine manufacturers and maintenance engineers for reliable motor circuit protection, high fault interruption performance and consistent operation in demanding industrial environments.
