Why Choose the Mersen NH3AM69V400P-2 NH Fuse Link?
The Mersen NH3AM69V400P-2 is a high-performance NH3 aM fuse link designed to provide dependable short-circuit protection for motors, motor starters and industrial electrical equipment. Manufactured as part of Mersen’s low-voltage IEC fuse range, this DIN-standard fuse link combines strong current-limiting performance with reliable operation in demanding motor circuit applications.
Featuring an aM operating characteristic, the NH3AM69V400P-2 is specifically intended for partial-range motor circuit protection. It protects equipment against high fault currents and short circuits while working alongside suitable overload protection devices. Its integrated striker provides a clear mechanical indication when the fuse has operated and can support remote signalling or associated switching mechanisms.
With a rated current of 400 A and a maximum rated AC voltage of 690 V, this NH size 3 fuse link is suitable for substantial industrial motor loads. Its ceramic body, silver-plated copper blade contacts and 80 kA breaking capacity provide durable, efficient and reliable protection for industrial power distribution and motor control systems.
Key Advantages
- High-performance aM fuse link for motor circuit protection.
- 400 A rated current for demanding industrial motor applications.
- 690 V AC rated voltage suitable for low-voltage industrial networks.
- High 80 kA AC breaking capacity for dependable short-circuit protection.
- Integrated striker indication system for clear fuse operation signalling.
- Strong current-limiting performance helps reduce damage caused by electrical faults.
Key Features
- Mersen NH aM fuse-link series.
- 400 A ampere rating.
- 690 V AC rated voltage.
- NH3 fuse size manufactured to DIN NH dimensions.
- aM partial-range operating characteristic.
- Integrated mechanical striker indicator.
- Silver-plated copper plain-blade terminals.
- Robust ceramic body for industrial electrical environments.
Reliable Short-Circuit Protection for Motor Circuits
The Mersen NH3AM69V400P-2 is designed to interrupt high fault currents rapidly, limiting the electrical and thermal energy passed through to motors, contactors and other connected components. This current-limiting action helps reduce equipment damage, system downtime and the risk of faults spreading through an electrical installation.
As an aM partial-range fuse, the NH3AM69V400P-2 provides short-circuit protection rather than full overload protection. It should therefore be used with a correctly selected motor overload relay, circuit breaker or other protective device. Installation and replacement should be completed by qualified electrical personnel using an appropriate NH fuse carrier and fuse-handling equipment.
Typical Applications
- Industrial motor circuits and motor control centres.
- Motor starters, contactors and control panels.
- Pumps, fans and compressor systems.
- Conveyors and material handling machinery.
- Manufacturing and processing equipment.
- Industrial power distribution and automation systems.
