Why Choose the Mersen NH1AM50V315 Motor Protection Fuse-Link?
The Mersen NH1AM50V315 is a high-performance DIN NH aM fuse-link engineered to provide dependable short-circuit protection for motors, motor starters and industrial power circuits. Featuring a partial-range aM operating characteristic, it is specifically designed to withstand normal motor starting currents while providing rapid disconnection during high fault current conditions.
Part of Mersen's NH aM 500 V AC fuse-link range, the NH1AM50V315 combines excellent current-limiting performance with low power dissipation, helping to protect contactors, cables and switchgear from excessive thermal and mechanical stress. The integrated double indication system enables quick identification of an operated fuse-link, reducing maintenance time.
Rated at 315 A and 500 V AC, this NH1 fuse-link features live gripping lugs, silver-plated copper blade contacts and a ceramic insulating body. As an aM fuse-link, it provides short-circuit protection only and must be installed alongside 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.
- 315 A rated current for demanding motor circuits.
- 500 V AC rated operating voltage.
- 120 kA AC breaking capacity for reliable fault interruption.
- Current-limiting design reduces damage to downstream equipment.
- 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 NH1 fuse size.
- 315 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.
- 40 mm body width.
Reliable Short-Circuit Protection for Motor Circuits
Motor circuits generate high inrush currents during starting, requiring protective devices that tolerate these temporary conditions without nuisance operation. The Mersen NH1AM50V315 is specifically engineered to withstand motor starting currents while providing rapid interruption of severe short-circuit faults.
Because this is an aM partial-range fuse-link, it must always be used alongside correctly selected overload protection. Together, the fuse-link and overload device provide comprehensive protection for industrial motors and associated electrical equipment.
Typical Applications
- Industrial motor starter circuits.
- Motor control centres.
- Contactors with thermal overload relays.
- Pumps, compressors and conveyors.
- Industrial machinery and manufacturing equipment.
- NH1 fuse bases and fuse-switch disconnectors.
