Why Choose the Mersen NH2AM69V250 NH Fuse Link?
The Mersen NH2AM69V250 is a high-performance NH2 size aM fuse link designed to provide dependable short-circuit protection for industrial motors, motor starters and heavy-duty electrical equipment. Rated at 250 A and 690 V AC, it is specifically engineered for motor circuits where high starting currents must be accommodated without unnecessary fuse operation.
Its aM operating characteristic is intended exclusively for motor circuit protection. The fuse tolerates the temporary inrush currents generated during motor start-up while rapidly interrupting dangerous short-circuit currents. As an aM fuse provides partial-range protection, it should always be used alongside a correctly selected overload relay or other suitable overload protection equipment.
The NH2AM69V250 features a durable ceramic body, silver-plated blade contacts, live gripping tags and an integrated double indicator for quick identification of an operated fuse. Its standard NH2 format with a 52 mm body width enables installation in compatible NH fuse bases and switch disconnectors used throughout industrial control systems.
Key Advantages
- Purpose-designed aM short-circuit protection for motor circuits.
- 250 A rated current for industrial motors and machinery.
- 690 V AC operating voltage.
- 80 kA breaking capacity for demanding industrial installations.
- Double indicator enables rapid identification of an operated fuse.
- Standard NH2 construction for compatible industrial switchgear.
Key Features
- Mersen NH aM industrial fuse-link range.
- NH2 fuse size.
- 250 A rated current.
- 690 V AC rated voltage.
- aM partial-range motor protection characteristic.
- 80 kA AC breaking capacity.
- Integrated double fuse indicator.
- Live gripping tags for safe handling.
- Silver-plated copper blade contacts.
- Robust ceramic insulating body.
Reliable Short-Circuit Protection for Motor Circuits
The Mersen NH2AM69V250 is designed to protect industrial motors and associated equipment by rapidly interrupting high fault currents while allowing normal motor starting currents to pass. Its current-limiting performance helps reduce thermal and mechanical stress on motors, contactors, cables and switchgear, improving overall system reliability.
As an aM fuse link, the NH2AM69V250 does not provide complete overload protection. It must be coordinated with a suitable thermal or electronic overload relay. Installation and replacement should only be carried out by qualified personnel using approved NH fuse handling equipment and appropriate personal protective equipment.
Typical Applications
- Industrial motor starters.
- Motor control centres.
- Pumps and compressors.
- Fans and ventilation systems.
- Conveyor and material handling equipment.
- Industrial machinery and automation systems.
