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MERSEN FUSE FUS. AM NH3 C/P 400A NH3AM69V400P-2
Mersen NH3AM69V400P-2 DIN NH3 aM fuse link rated at 400 A and 690 V AC, featuring an 80 kA breaking capacity and integrated striker for motor circuit short-circuit protection.
£52.13
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.
Technical Specifications
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| Current | 400 A | |
|---|---|---|
| Device Type | Fuse link | |
| Fuse Type | NH (DIN) | |
| Fuse Size | NH3 | |
| Fuse Class | aM | |
| Voltage | 690 V | |
| Manufacturer | Mersen | |
| Product range | NH fuse links aM 500–690 V AC with striker | |
| Catalogue number | NH3AM69V400P-2 | |
| Item number | G215677 | |
| Product type | DIN NH motor fuse link | |
| Operating characteristic | aM | |
| Rated current | 400 A | |
| Rated voltage | 690 V AC | |
| AC breaking capacity | 80 kA | |
| Fuse size | NH3 | |
| Indication system | Yes | |
| Indication type | Striker | |
| Terminal type | Plain blades | |
| Terminal material | Silver-plated copper | |
| Body material | Ceramic | |
| Power dissipation at rated current | 34 W | |
| Dimensions (L × W × H) | 150 × 69 × 70 mm | |
| Product weight | 0.871 kg | |
| EAN / UPC | 8430399012926 | |
| RoHS compliant | Yes | |
| HS Code | 85361090 |
Frequently Asked Questions
What is the Mersen NH3AM69V400P-2 used for?
This fuse link is used to provide high-capacity short-circuit protection for motors, motor starters and associated industrial electrical equipment.
What is the current rating of this fuse?
The Mersen NH3AM69V400P-2 has a rated current of 400 A.
What voltage is the NH3AM69V400P-2 rated for?
The fuse link is rated for use on AC electrical systems with a maximum rated voltage of 690 V AC.
Does an aM fuse provide overload protection?
No. An aM fuse is a partial-range fuse designed primarily for short-circuit protection and must be combined with a suitable overload protection device.
What does the integrated striker do?
The striker provides a mechanical indication when the fuse has operated and may also be used with compatible signalling or switching equipment.
Trusted Industrial Circuit Protection
Mersen NH fuse links are widely used by electrical engineers, panel builders and industrial maintenance professionals to provide reliable short-circuit protection for motors and low-voltage power systems.
