Why Choose the Mersen NH4AM50V800-8 Motor Protection Fuse Link?
The Mersen NH4AM50V800-8 is a heavy-duty DIN NH aM fuse link engineered to provide dependable short-circuit protection for motor circuits and industrial electrical equipment. Manufactured by Mersen, this NH4 fuse link is specifically designed to withstand the high inrush currents associated with motor starting while delivering rapid interruption of high fault currents.
As part of the proven Mersen NH aM 500 V AC fuse series, the NH4AM50V800-8 features live gripping lugs and a top operating indicator, enabling safer handling and quick identification of an operated fuse. Its ceramic body and silver-plated copper blade terminals ensure excellent mechanical strength, electrical conductivity and long service life in demanding industrial environments.
With a rated current of 800 A, a 500 V AC operating voltage and a high 120 kA breaking capacity, this fuse link is ideally suited to motor control centres, industrial switchboards and heavy-duty machinery requiring reliable motor circuit protection.
Key Advantages
- Designed specifically for motor circuit short-circuit protection.
- 800 A rated current for demanding industrial applications.
- 500 V AC rated voltage for low-voltage power systems.
- aM fuse characteristic optimised for motor protection.
- 120 kA AC breaking capacity for high fault current interruption.
- Top indicator provides rapid fuse status identification.
- Live gripping lugs support safe fuse replacement.
- Current-limiting design helps minimise equipment damage during faults.
Key Features
- Mersen NH aM motor protection fuse series.
- NH4 DIN fuse size.
- 800 A rated current.
- 500 V AC rated voltage.
- 120 kA AC breaking capacity.
- aM partial-range protection characteristic.
- Top operating indicator.
- Live gripping lugs.
- Silver-plated copper blade terminals.
- Ceramic insulating body.
- Clip mounting in compatible NH fuse bases.
- RoHS compliant.
Reliable Short-Circuit Protection for Industrial Motors
The Mersen NH4AM50V800-8 incorporates an aM operating characteristic developed specifically for motor applications. It allows the high starting currents of electric motors to pass without nuisance operation while providing rapid protection against damaging short-circuit faults. As with all aM fuse links, overload protection should be provided by an appropriate thermal overload relay or motor protection device.
Its high current-limiting capability helps reduce thermal and mechanical stress throughout the electrical installation, improving the protection of motors, contactors, cables and associated switchgear while reducing downtime following electrical faults.
Typical Applications
- Motor control centres (MCCs).
- Industrial motor protection.
- Heavy-duty manufacturing equipment.
- Industrial switchboards.
- Pumps, compressors and conveyors.
- Process automation systems.
