Why Choose the Mersen NH2AM50V250 Motor Protection Fuse-Link?
The Mersen NH2AM50V250 is a high-performance DIN NH aM fuse-link designed to provide reliable short-circuit protection for motors, motor starters and industrial power circuits. Featuring a specialised aM operating characteristic, it allows normal motor starting currents while rapidly disconnecting high fault currents to protect valuable electrical equipment.
Part of Mersen's NH aM 500 V AC fuse-link range, the NH2AM50V250 delivers excellent current-limiting performance and high fault interruption capability. Its ceramic body, silver-plated blade contacts and double indication system provide dependable long-term operation whilst simplifying maintenance in demanding industrial environments.
Rated at 250 A and 500 V AC, this NH2 fuse-link features live gripping lugs, double indication and standard NH blade contacts. As an aM fuse-link, it provides short-circuit protection only and must always be installed with a suitable overload protection device such as a thermal overload relay or motor protection circuit breaker.
Key Advantages
- Purpose-designed aM motor protection fuse-link.
- 250 A rated current for industrial motor circuits.
- 500 V AC rated operating voltage.
- 120 kA AC breaking capacity for dependable fault interruption.
- Current-limiting design protects contactors, cables and switchgear.
- Double indicator enables rapid identification of an operated fuse-link.
- Low power dissipation improves operating efficiency.
Key Features
- Mersen NH aM 500 V AC fuse-link series.
- DIN NH2 fuse size.
- 250 A rated current.
- 500 V AC rated voltage.
- aM partial-range operating characteristic.
- 120 kA AC breaking capacity.
- Double fuse operation indicator.
- Live gripping lugs.
- Silver-plated copper blade terminals.
- Durable ceramic insulating body.
- 52 mm body width.
Reliable Short-Circuit Protection for Motor Circuits
Motor circuits produce high inrush currents during starting that conventional full-range fuse-links may not tolerate. The Mersen NH2AM50V250 is specifically engineered to withstand these temporary starting currents whilst providing rapid interruption of severe short-circuit faults, helping protect motors and associated electrical equipment.
Because this is an aM partial-range fuse-link, it must always be combined with correctly selected overload protection. Together, the fuse-link and overload relay provide complete protection for industrial motors and motor starter assemblies.
Typical Applications
- Industrial motor starter circuits.
- Motor control centres.
- Contactors with thermal overload relays.
- Pumps, compressors and conveyor systems.
- Industrial machinery and manufacturing equipment.
- NH2 fuse bases and fuse-switch disconnectors.
