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MERSEN FUSE NH 1 125A 690V AM NH1AM69V125
Mersen NH1AM69V125 DIN NH Size 1 aM fuse-link rated at 125 A and 690 V AC for industrial motor short-circuit protection.
£14.47
Why Choose the Mersen NH1AM69V125 Motor Protection Fuse-Link?
The Mersen NH1AM69V125 is a high-performance DIN NH aM fuse-link engineered to provide dependable short-circuit protection for motor circuits operating in demanding industrial environments. As part of the proven Mersen NH aM 690 V AC fuse-link series, it is specifically designed to protect motors, contactors, starters and associated switchgear while allowing normal motor starting currents to pass without nuisance operation.
Featuring a specialised aM operating characteristic, this fuse-link delivers rapid fault interruption during short-circuit conditions while working alongside an overload relay or motor protection circuit breaker to provide complete motor circuit protection. Its robust ceramic body, double indication system and live gripping lugs ensure safe installation, long service life and easy maintenance.
With a rated current of 125 A, a rated voltage of 690 V AC and a standard NH Size 1 construction, the NH1AM69V125 is ideal for industrial motor control centres, machinery, pumps, compressors, conveyors and automation systems where reliable motor protection is essential.
Key Advantages
- Purpose-designed aM fuse characteristic for motor short-circuit protection.
- 125 A rated current for industrial motor applications.
- 690 V AC rated voltage.
- High 80 kA breaking capacity.
- Allows normal motor starting currents without nuisance operation.
- Double indicator provides quick visual identification after fuse operation.
- Compatible with standard DIN NH Size 1 fuse bases.
Key Features
- Mersen NH aM 690 V AC fuse-link series.
- DIN NH Size 1.
- 125 A rated current.
- 690 V AC rated voltage.
- Partial-range aM operating characteristic.
- Double fuse operation indicator.
- Live gripping lugs.
- Silver-plated copper blade terminals.
- Ceramic insulating body.
- RoHS compliant.
Reliable Short-Circuit Protection for Motor Circuits
The Mersen NH1AM69V125 is designed to interrupt high fault currents before they can damage motors, motor starters, contactors and associated electrical equipment. Its specialised aM characteristic allows it to withstand normal motor inrush currents while delivering rapid interruption during severe short-circuit faults.
As an aM fuse-link provides partial-range protection, it should always be installed alongside a correctly selected overload relay or motor protection circuit breaker to ensure complete protection against sustained overload currents.
Typical Applications
- Industrial electric motor protection.
- Motor control centres.
- Motor starters and contactor assemblies.
- Pumps and compressors.
- Conveyor systems.
- Industrial machinery.
- OEM automation equipment.
Technical Specifications
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| Fuse Indication | Dual indicator | |
|---|---|---|
| Current | 125 A | |
| Voltage | 690 V | |
| Device Type | Fuse link | |
| Fuse Type | NH (DIN) | |
| Fuse Size | NH1 | |
| Fuse Class | aM | |
| Manufacturer | Mersen | |
| Series | NH Fuse-Links aM 690 V AC | |
| Model | NH1AM69V125 | |
| Manufacturer item number | M227895 | |
| EAN | 8430399025124 | |
| Product type | DIN NH motor protection fuse-link | |
| Fuse characteristic | aM | |
| Fuse size | NH1 | |
| Rated current | 125 A | |
| Rated voltage | 690 V AC | |
| Breaking capacity | 80 kA | |
| Power dissipation | 7.5 W | |
| Indicator | Double indicator | |
| Gripping lugs | Live gripping lugs | |
| Terminal material | Silver-plated copper | |
| Body width | 40 mm | |
| Dimensions (L × H) | Approx. 135 × 64 mm | |
| Weight | Approx. 0.43 kg | |
| Mounting type | Clip mounting | |
| Compliance | IEC 60269, RoHS compliant | |
| HS Code | 85361090 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen NH1AM69V125 used for?
The NH1AM69V125 provides short-circuit protection for industrial motor circuits, starters, contactors and associated switchgear.
What is the rated current of this fuse-link?
The Mersen NH1AM69V125 has a rated current of 125 A.
What voltage is the NH1AM69V125 rated for?
This fuse-link is rated for operation at up to 690 V AC.
What does the aM fuse characteristic mean?
The aM characteristic is designed for motor short-circuit protection and must be used together with a suitable overload protection device.
Does this fuse-link include an operation indicator?
Yes. The NH1AM69V125 features a double indication system for quick visual confirmation after the fuse has operated.
Trusted by Industrial Engineers Worldwide
Mersen NH aM fuse-links are trusted by machine builders, electrical engineers and maintenance professionals for dependable motor short-circuit protection, high fault interruption capability and reliable long-term performance.
