Why Choose the Mersen NH4AM69V800P-2 NH Fuse-Link?
The Mersen NH4AM69V800P-2 is a high-capacity DIN NH aM fuse-link designed to provide dependable short-circuit protection for large motors, motor starters and heavy-duty industrial electrical systems. Part of the established Mersen NH aM 500–690 V AC fuse-link series, it delivers effective current limitation and reliable fault interruption in demanding motor control applications.
This NH4 fuse-link features an integrated striker indication system, which provides mechanical indication when the fuse has operated and can be used with compatible auxiliary monitoring equipment. Its robust ceramic body, silver-plated copper contacts and plain blade terminals support reliable electrical performance in industrial switchgear and motor control centres.
With a rated current of 800 A, a maximum operating voltage of 690 V AC and an AC breaking capacity of 120 kA, the NH4AM69V800P-2 is suitable for high-power motor circuits where separate overload protection is installed. Its DIN-standard NH4 dimensions allow integration with compatible fuse bases and fuse-switch disconnectors.
Key Advantages
- High-capacity aM fuse-link for motor circuit protection.
- 800 A rated current for heavy-duty industrial motors.
- 690 V AC rated voltage for industrial power systems.
- 120 kA AC breaking capacity for reliable fault interruption.
- Integrated striker provides clear mechanical fuse operation indication.
- DIN NH4 construction ensures compatibility with suitable industrial fusegear.
Key Features
- Mersen NH aM fuse-link series.
- 800 A rated current.
- 690 V AC IEC rated voltage.
- 120 kA AC breaking capacity.
- NH4 standard fuse size.
- aM partial-range characteristic for motor circuit protection.
- Integrated striker indication system.
- Silver-plated copper contact material.
- Plain blade terminal connections.
- Robust ceramic fuse body.
Reliable Protection for High-Power Motor Circuits
The Mersen NH4AM69V800P-2 provides partial-range protection against high short-circuit currents in large motor circuits. Its aM characteristic is designed to tolerate the temporary inrush currents associated with motor starting while interrupting dangerous fault currents before they damage cables, contactors, drives or other electrical equipment.
As an aM fuse-link, the NH4AM69V800P-2 does not provide complete overload protection. It should therefore be coordinated with a suitable overload relay, motor protection circuit breaker or electronic motor protection device selected for the application.
Typical Applications
- High-power industrial motor circuits.
- Motor control centres and motor starter panels.
- Heavy manufacturing and processing equipment.
- Industrial pumps, compressors and ventilation systems.
- Variable speed drive installations.
- Low voltage switchboards and power distribution systems.
