Why Choose the Mersen NH0AM69V80 NH Fuse-Link?
The Mersen NH0AM69V80 is a high-performance NH aM low voltage fuse-link designed to provide dependable short-circuit protection for motors, motor starters and industrial machinery. Its partial-range aM operating characteristic allows normal motor starting currents to pass while rapidly interrupting high fault currents that could damage cables, contactors and connected equipment.
As part of the established Mersen NH aM 690 V AC fuse-link series, the NH0AM69V80 combines a durable ceramic body with silver-plated copper blade contacts and an 80 kA breaking capacity. Its double indicator allows maintenance personnel to identify an operated fuse quickly, while the live gripping tags support handling with an approved NH fuse replacement device.
With a rated current of 80 A and a rated voltage of 690 V AC, the NH0AM69V80 is suitable for motor control centres, industrial switchgear, pumps, fans, conveyors and production machinery. Its compact NH0 construction enables straightforward installation in compatible NH fuse bases and switch-disconnectors.
Key Advantages
- Purpose-designed aM protection for industrial motor circuits.
- 80 A rated current for machinery and motor control applications.
- 690 V AC rated voltage for demanding industrial power systems.
- High 80 kA breaking capacity for reliable fault interruption.
- Allows normal motor starting currents without unnecessary fuse operation.
- Double indicator enables rapid visual identification after operation.
- Live gripping tags support handling with a suitable NH fuse puller.
Key Features
- Mersen NH aM 690 V AC fuse-link series.
- 80 A rated current.
- 690 V AC rated voltage.
- NH0 fuse size.
- Motor-specific aM operating characteristic.
- Double fuse operation indicator.
- Live gripping tag design.
- Silver-plated copper plain-blade terminals.
- Robust ceramic insulating body.
- Compact 30 mm body width.
Reliable Short-Circuit Protection for Motor Circuits
The Mersen NH0AM69V80 uses an aM partial-range characteristic developed specifically for motor circuit protection. It tolerates the temporary inrush current produced when a motor starts while providing rapid interruption when a severe short-circuit fault occurs. This helps protect motors, contactors, cables and associated switching equipment from damaging fault energy.
Because an aM fuse-link does not provide complete overload protection, it should be coordinated with a suitable thermal overload relay, electronic motor protection device or motor protection circuit breaker. The standard NH0 format provides compatibility with appropriate NH fuse bases and switch-disconnectors used throughout industrial installations.
Typical Applications
- Industrial motor control centres.
- Motor starters and contactor assemblies.
- Pumps, fans and ventilation equipment.
- Conveyors and material handling systems.
- Compressors and processing machinery.
- OEM automation and control panels.
- Industrial switchgear assemblies.
