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MERSEN FUSE NH 3 500V 690V AM L227986
Mersen NH3AM69V500 NH3 aM motor protection fuse-link rated at 500 A and 690 V AC with live gripping tags, double indicator and 80 kA breaking capacity.
£44.30
Why Choose the Mersen NH3AM69V500 Motor Protection Fuse-Link?
The Mersen NH3AM69V500 is a high-performance NH3 aM fuse-link specifically designed for the short-circuit protection of motors, motor starters and associated electrical equipment. Manufactured to the DIN NH standard, it provides exceptional current-limiting performance whilst safely accommodating the high inrush currents generated during motor starting.
Rated at 500 A and 690 V AC, the NH3AM69V500 forms part of Mersen's aM motor protection range. The aM operating characteristic is intended for short-circuit protection only and should always be used alongside an appropriately selected thermal overload relay or motor protection device to provide complete motor protection.
Featuring live gripping tags, a double visual indicator, silver-plated copper blade contacts and a durable ceramic body, the NH3AM69V500 delivers dependable protection for motor control centres, industrial switchboards and OEM machinery installations.
Key Advantages
- Specialised aM motor circuit protection.
- 500 A rated current for high-power motor applications.
- 690 V AC operating voltage.
- 80 kA AC breaking capacity for dependable fault interruption.
- Excellent current limitation during short-circuit conditions.
- Double indicator provides rapid identification of an operated fuse.
- Live gripping tags for handling with an approved NH fuse puller.
- Designed for use alongside motor overload protection devices.
Key Features
- Mersen NH Fuse-Links aM 690 VAC series.
- NH3 fuse size.
- 500 A rated current.
- 690 V AC rated voltage.
- aM utilisation category.
- 80 kA AC breaking capacity.
- Double blown-fuse indicator.
- Live gripping tags.
- Silver-plated copper blade contacts.
- Ceramic fuse body.
- Body width: 71.9 mm.
- RoHS compliant.
Reliable Short-Circuit Protection for Industrial Motor Circuits
The NH3AM69V500 is designed for high-power motor applications where substantial starting currents occur. Its aM characteristic allows the fuse-link to withstand temporary inrush currents whilst providing rapid interruption during short-circuit faults, helping minimise damage to motors, starters and associated electrical equipment.
As an aM fuse-link provides short-circuit protection only, it should always be combined with a correctly selected overload relay or motor protection device to provide complete protection for the motor installation.
Typical Applications
- Motor control centres.
- Industrial motor starters.
- High-power pumps and compressors.
- Conveyor systems.
- Industrial switchboards.
- OEM machinery.
- HVAC plant.
- Manufacturing automation systems.
Technical Specifications
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| Fuse Indication | Dual indicator | |
|---|---|---|
| Voltage | 500 V | |
| Device Type | Fuse link | |
| Fuse Type | NH (DIN) | |
| Fuse Size | NH3 | |
| Fuse Class | aM | |
| Current | 500 A | |
| Manufacturer | Mersen | |
| Series | NH Fuse-Links aM 690 VAC | |
| Model | NH3AM69V500 | |
| Manufacturer part number | L227986 | |
| Product type | NH motor protection fuse-link | |
| Fuse size | NH3 | |
| Utilisation category | aM | |
| Rated current | 500 A | |
| Rated voltage AC | 690 V | |
| Current type | AC | |
| Breaking capacity | 80 kA AC | |
| Body width | 71.9 mm | |
| Power dissipation | 42 W | |
| Indicator | Double indicator | |
| Gripping tags | Live gripping tags | |
| Terminal material | Silver-plated copper | |
| Body material | Ceramic | |
| Mounting | Compatible NH3 fuse base | |
| Weight | Approx. 1.05 kg | |
| EAN | 8430399025414 | |
| RoHS compliant | Yes | |
| HS Code | 85361090 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen NH3AM69V500 used for?
The NH3AM69V500 is an NH aM fuse-link designed to provide short-circuit protection for industrial motor circuits and associated electrical equipment.
What are the electrical ratings?
The fuse-link is rated at 500 A, 690 V AC and has an 80 kA AC breaking capacity.
What does the aM classification mean?
The aM classification identifies a motor protection fuse-link that provides short-circuit protection only and must be used together with a suitable overload protection device.
Does this fuse-link include an indicator?
Yes. The NH3AM69V500 incorporates a double visual indicator to clearly identify when the fuse-link has operated.
Which fuse size is this product?
This model is manufactured in the standard NH3 size for installation in compatible NH fuse bases and fuse-switch disconnectors.
Trusted Motor Protection from Mersen
Mersen NH aM fuse-links are trusted by electrical engineers, panel builders and industrial maintenance professionals worldwide for dependable motor short-circuit protection, excellent current limitation and reliable long-term performance.
