Why Choose the Mersen NH3AM50V500 Motor Protection Fuse Link?
The Mersen NH3AM50V500 is a heavy-duty DIN NH aM fuse link designed to provide dependable short-circuit protection for high-power motor circuits and industrial electrical equipment. Manufactured by Mersen, this NH3 fuse link is engineered to withstand the high inrush currents associated with motor starting while rapidly interrupting damaging fault currents to protect motors, contactors and associated equipment.
As part of the trusted Mersen NH aM 500 V AC fuse range, the NH3AM50V500 features live gripping lugs and a double indication system, enabling quick identification of an operated fuse and safer replacement using an approved NH fuse puller. Its robust ceramic body and silver-plated blade contacts ensure dependable electrical performance in demanding industrial environments.
With a 500 A rated current, a 500 V AC operating voltage and a 120 kA AC breaking capacity, the NH3AM50V500 is ideally suited for motor control centres, industrial switchboards, OEM machinery and heavy-duty production equipment requiring reliable motor short-circuit protection.
Key Advantages
- Designed specifically for motor circuit short-circuit protection.
- 500 A rated current for high-power industrial motors.
- 500 V AC rated voltage.
- aM operating characteristic optimised for motor applications.
- 120 kA AC breaking capacity for dependable fault interruption.
- Double indication system for rapid fuse status identification.
- Live gripping lugs enable safer fuse replacement.
- Current-limiting design helps minimise equipment damage during faults.
Key Features
- Mersen NH aM motor protection fuse series.
- NH3 DIN fuse size.
- 500 A rated current.
- 500 V AC rated voltage.
- 120 kA AC breaking capacity.
- aM partial-range protection characteristic.
- Double operating indicator.
- Live gripping lugs.
- Silver-plated blade contacts.
- Ceramic insulating body.
- Body width approximately 71.9 mm.
- Clip mounting in compatible NH fuse bases.
Reliable Short-Circuit Protection for Industrial Motors
The Mersen NH3AM50V500 incorporates an aM operating characteristic developed specifically for motor protection. It allows normal motor starting currents to pass without nuisance operation while rapidly clearing damaging short-circuit faults. As with all aM fuse links, it should always be used alongside an appropriate overload relay or motor protection device.
Its current-limiting performance helps reduce thermal and mechanical stress on motors, cables, contactors and switchgear, improving equipment protection and reducing downtime following electrical faults.
Typical Applications
- Motor control centres (MCCs).
- Industrial motor protection.
- Heavy-duty manufacturing equipment.
- Industrial switchboards.
- Pumps, compressors and conveyors.
- OEM machinery and automation systems.
