Why Choose the Mersen NH2AM69V50 Motor Protection Fuse-Link?
The Mersen NH2AM69V50 is a premium DIN NH aM low voltage fuse-link designed specifically for the short-circuit protection of industrial motor circuits. Rated at 50 A and 690 V AC, this NH Size 2 fuse-link delivers dependable protection for motors, motor starters, contactors and associated control equipment operating in demanding industrial environments.
Part of Mersen's proven NH aM 690 V AC fuse-link range, the NH2AM69V50 features live gripping lugs with a double indicator, allowing safe handling with an approved NH fuse puller while providing rapid visual confirmation when the fuse has operated. Manufactured to DIN NH and IEC standards, it offers excellent current-limiting characteristics and high breaking capacity for reliable motor circuit protection.
The aM operating characteristic is intended for motor circuit short-circuit protection only. It allows normal motor starting currents to pass without nuisance operation and must be used alongside a suitable thermal overload relay or electronic motor protection device to provide complete motor protection.
Key Advantages
- Designed specifically for motor circuit short-circuit protection.
- 50 A rated current for industrial motor applications.
- 690 V AC rated voltage for modern industrial power systems.
- aM operating characteristic allows motor starting currents.
- Double indicator enables rapid identification of an operated fuse.
- Live gripping lugs support safe installation and replacement.
- High current-limiting performance reduces fault energy.
Key Features
- Mersen NH aM fuse-link series.
- Catalogue number: NH2AM69V50.
- Manufacturer item number: N227965.
- 50 A rated current.
- 690 V AC rated voltage.
- NH Size 2 construction.
- aM motor protection characteristic.
- Double indicator system.
- Live gripping lugs.
- Body width: 52 mm.
Reliable Protection for Industrial Motor Circuits
The Mersen NH2AM69V50 is engineered to protect motors and associated equipment from the damaging effects of short-circuit faults. Its current-limiting performance helps reduce thermal and mechanical stresses on contactors, starters, cables and switchgear, improving overall system reliability.
Because this is an aM fuse-link, it should always be coordinated with an appropriate overload relay or electronic motor protection device. Together they provide comprehensive protection against both overload and short-circuit conditions while allowing motors to start normally without unnecessary fuse operation.
Typical Applications
- Motor control centres.
- Direct-on-line and star-delta motor starters.
- Industrial machinery.
- Pump, fan and compressor installations.
- Manufacturing and processing equipment.
- Industrial automation and electrical control panels.
