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MERSEN FUSE NH 2 300A 690V AM NH2AM69V300
Mersen NH2AM69V300 DIN NH2 aM motor protection fuse-link rated at 300 A and 690 V AC for short-circuit protection of industrial motor circuits.
£19.03
Why Choose the Mersen NH2AM69V300 Motor Protection Fuse?
The Mersen NH2AM69V300 is a premium DIN NH aM fuse-link specifically designed to provide reliable short-circuit protection for industrial motor circuits and associated electrical equipment. Manufactured by Mersen, this NH2 fuse-link is engineered to withstand the high inrush currents generated during motor starting while rapidly interrupting damaging fault currents.
Featuring a specialised aM operating characteristic, the NH2AM69V300 is intended for motor protection applications where overload protection is provided separately by a thermal overload relay or electronic motor protection device. Its robust ceramic construction, live gripping lugs and integrated double indicator ensure dependable operation and simplified maintenance in demanding industrial environments.
With a 300 A rated current, 690 V AC rated voltage and an 80 kA breaking capacity, the NH2AM69V300 is ideally suited to motor control centres, switchgear, heavy industrial machinery and OEM electrical panels requiring dependable motor circuit protection.
Key Advantages
- Purpose-designed DIN NH aM fuse-link for motor circuit protection.
- 300 A rated current for demanding industrial motor applications.
- 690 V AC rated voltage for industrial power systems.
- 80 kA breaking capacity for dependable fault interruption.
- Integrated double indicator for rapid fuse status identification.
- Allows motor starting currents while protecting against short circuits.
Key Features
- Mersen NH aM 690 VAC fuse-link series.
- DIN NH Size 2.
- 300 A rated current.
- 690 V AC rated voltage.
- aM motor protection characteristic.
- 80 kA AC breaking capacity.
- Double visual operation indicator.
- Live gripping lugs with blade contacts.
Reliable Short-Circuit Protection for Motor Circuits
The NH2AM69V300 is specifically engineered to protect motors and associated switching equipment against high fault currents. Unlike gG fuse-links, the aM characteristic permits normal motor starting currents while delivering rapid short-circuit protection. For complete motor protection, it should always be used together with a suitable overload relay.
Manufactured to DIN NH standards, this fuse-link provides reliable long-term performance and compatibility with standard NH2 fuse bases widely used throughout industrial power distribution and motor control systems.
Typical Applications
- Motor control centres.
- Industrial electric motors.
- Motor starters and contactors.
- Industrial switchboards.
- OEM machinery and automation equipment.
- Low voltage power distribution systems.
Technical Specifications
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| Fuse Indication | Dual indicator | |
|---|---|---|
| Current | 300 A | |
| Voltage | 690 V | |
| Device Type | Fuse link | |
| Fuse Type | NH (DIN) | |
| Fuse Size | NH2 | |
| Fuse Class | aM | |
| Manufacturer | Mersen | |
| Series | NH Fuse-links aM 690 VAC | |
| Model | NH2AM69V300 | |
| Item number | Y227974 | |
| Product type | DIN NH motor protection fuse-link | |
| Fuse size | NH2 | |
| Rated current | 300 A | |
| Rated voltage | 690 V AC | |
| Operating characteristic | aM | |
| Breaking capacity | 80 kA AC | |
| Current type | AC | |
| Indicator | Double indicator | |
| Gripping lugs | Live gripping lugs | |
| Body width | 52 mm | |
| Weight | Approx. 0.64 kg | |
| EAN | 8430399025292 | |
| RoHS compliant | Yes | |
| HS Code | 85361090 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen NH2AM69V300 used for?
This fuse-link provides short-circuit protection for industrial motor circuits and associated electrical equipment.
What is the current rating of this fuse?
The NH2AM69V300 has a rated current of 300 A.
What voltage is this fuse designed for?
The fuse-link is rated for operation on systems up to 690 V AC.
What does the aM characteristic mean?
The aM characteristic is specifically designed for motor protection, allowing motor starting currents while providing short-circuit protection. It should be used together with a suitable overload relay.
What is the purpose of the double indicator?
The integrated double indicator provides clear visual confirmation after the fuse has operated, helping simplify maintenance and fault diagnosis.
Trusted for Industrial Motor Protection
Mersen NH aM fuse-links are trusted worldwide by electrical engineers, machine builders and panel manufacturers for dependable motor circuit protection, high fault interruption capability and reliable performance in demanding industrial environments.
