Why Choose the Mersen NH2AM50V500P-2 NH Fuse Link?
The Mersen NH2AM50V500P-2 is a high-performance NH2 aM low-voltage HRC fuse link with striker, designed specifically for short-circuit protection in motor circuits and other high-inrush industrial loads. Manufactured by Mersen, this DIN-standard fuse link delivers strong current-limiting performance for electrical installations operating at up to 500 V AC.
The NH2AM50V500P-2 incorporates an integrated mechanical striker that provides positive indication when the fuse has operated. When installed in compatible switchgear, the striker can actuate an auxiliary switch, alarm circuit or disconnection mechanism, helping maintenance personnel identify and isolate faults quickly.
With a rated current of 500 A, an NH2 fuse size and a high 120 kA AC breaking capacity, this fuse link is suitable for protecting large motors, motor starters and industrial drive circuits against damaging short-circuit currents. As an aM partial-range fuse, it must be used alongside a suitable overload-protection device such as a motor protection relay or circuit breaker.
Key Advantages
- High-performance aM short-circuit protection for motor circuits.
- 500 A rated current for demanding industrial applications.
- 500 V AC rated operating voltage.
- 120 kA AC breaking capacity for dependable interruption of severe faults.
- Integrated striker supports local indication, signalling and auxiliary tripping.
- Current-limiting operation helps reduce thermal and electrodynamic stress.
Key Features
- Mersen NH aM fuse-link series with striker.
- NH2 fuse size.
- 500 A rated current.
- 500 V AC rated voltage.
- Partial-range aM operating characteristic.
- Integrated mechanical striker.
- Live, non-isolated gripping tags.
- DIN-standard blade-contact construction.
Reliable Short-Circuit Protection for Motor Circuits
aM fuse links are partial-range devices developed primarily for motor-circuit protection. Their time-current characteristics allow normal motor starting currents to pass without unnecessary operation while providing rapid interruption when a high short-circuit current occurs.
The Mersen NH2AM50V500P-2 does not provide complete overload protection. It should therefore be coordinated with a correctly selected motor overload relay, motor protection circuit breaker or equivalent protective device. This combination provides effective overload and short-circuit protection while supporting reliable motor starting.
When the fuse operates, its integrated striker is released. In compatible equipment, this mechanical action can activate an auxiliary contact, alarm system or switch-disconnector mechanism, enabling faster fault detection and coordinated isolation of the affected circuit.
Typical Applications
- Large industrial motor circuits.
- Motor starters and contactor assemblies.
- Motor control centres.
- Pumps, fans and compressor systems.
- Conveyors and production machinery.
- Industrial drives and high-inrush electrical loads.
