Why Choose the Mersen NH3AM50V355 NH Fuse-Link?
The Mersen NH3AM50V355 is a heavy-duty DIN NH aM fuse-link engineered to provide dependable short-circuit protection for large motors, motor starters and industrial electrical equipment. Part of the proven Mersen NH aM 500 V AC fuse series, it is designed for demanding low voltage power distribution and motor control applications requiring high breaking capacity and long-term reliability.
Designed to IEC and DIN NH standards, this Size NH3 fuse-link incorporates double indicators together with live gripping lugs, allowing quick visual status indication and safer replacement by qualified personnel. Its robust ceramic construction ensures reliable operation in harsh industrial environments.
With a 355 A current rating, 500 V AC rated voltage and 120 kA breaking capacity, the NH3AM50V355 is specifically intended for motor circuit short-circuit protection where overload protection is provided by separate motor protection devices.
Key Advantages
- Designed specifically for motor circuit short-circuit protection.
- 355 A rated current suitable for high-power industrial motors.
- 500 V AC IEC rating for industrial power distribution.
- 120 kA breaking capacity for dependable fault interruption.
- Double indication allows rapid fuse status identification.
- Live gripping lugs enable safer fuse replacement.
Key Features
- Mersen NH aM fuse-link series.
- Catalogue number: NH3AM50V355.
- 355 A rated current.
- 500 V AC rated voltage.
- DIN NH Size 3 fuse-link.
- aM utilisation category for motor protection.
- 120 kA AC breaking capacity.
- Double indicator system.
- Live gripping lugs.
- High-strength ceramic body construction.
Reliable Protection for Industrial Motor Installations
The Mersen NH3AM50V355 protects large industrial motors and associated equipment against high fault currents while allowing the high inrush currents associated with motor starting. The aM operating class is intended specifically for motor circuit short-circuit protection and is used alongside dedicated overload protection.
Its DIN NH design ensures compatibility with standard NH fuse bases used throughout industrial switchgear, motor control centres and power distribution systems, providing dependable protection and long service life in demanding applications.
Typical Applications
- Motor control centres (MCCs).
- Large industrial motor starters.
- Variable speed drive installations.
- Industrial switchboards.
- Power distribution panels.
- OEM machinery and process automation systems.
