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MERSEN FUSE NH 3 315A 500V AM NH3AM50V315
Mersen NH3AM50V315 DIN NH Size 3 aM fuse-link rated at 315 A, 500 V AC and 250 V DC for industrial motor circuit short-circuit protection.
£22.28
Why Choose the Mersen NH3AM50V315 NH Fuse-Link?
The Mersen NH3AM50V315 is a high-performance DIN NH aM fuse-link specifically developed for short-circuit protection of industrial motor circuits and associated equipment. Manufactured by Mersen, this NH Size 3 fuse-link provides outstanding current-limiting performance whilst allowing normal motor starting currents to pass without nuisance operation, making it ideal for heavy-duty motor protection applications.
As part of the proven Mersen NH aM 500 V fuse-link series, the NH3AM50V315 features a robust ceramic body, live gripping lugs and a double indication system for rapid identification of an operated fuse-link. Manufactured in accordance with IEC standards, it is suitable for industrial motor control centres, switchboards, OEM machinery and automation systems.
With a 315 A rated current, 500 V AC operating voltage, 250 V DC rating and a 120 kA AC breaking capacity, the NH3AM50V315 delivers dependable protection for large industrial motors and power distribution systems where high fault interruption capability is essential.
Key Advantages
- Purpose-designed DIN NH Size 3 aM fuse-link for motor circuit protection.
- 315 A rated current for high-power industrial motor applications.
- 500 V AC / 250 V DC rated operation.
- 120 kA AC breaking capacity for dependable fault interruption.
- Double indication system enables rapid identification of an operated fuse-link.
- Excellent current-limiting performance whilst allowing normal motor starting currents.
Key Features
- Mersen NH aM 500 V fuse-link series.
- DIN NH Size 3.
- 315 A rated current.
- 500 V AC rated voltage.
- 250 V DC rated voltage.
- aM utilisation category for motor circuit protection.
- Double indication system.
- Live gripping lugs with ceramic body.
Reliable Motor Circuit Protection
aM fuse-links are designed to provide partial-range protection against short circuits in motor circuits. They tolerate normal motor starting currents whilst rapidly interrupting high fault currents, protecting motors, contactors, starters and associated equipment from catastrophic electrical faults.
The NH3AM50V315 should always be used alongside a suitable overload relay or motor protection device, providing a coordinated protection solution for heavy-duty industrial machinery and automation systems.
Typical Applications
- Motor control centres.
- Large industrial motor starters.
- Variable speed drive input protection.
- Industrial switchboards.
- OEM machinery.
- Heavy-duty industrial automation systems.
Technical Specifications
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| Current | 315 A | |
|---|---|---|
| Voltage | 500 V | |
| Device Type | Fuse link | |
| Fuse Type | NH (DIN) | |
| Fuse Size | NH3 | |
| Fuse Class | aM | |
| Manufacturer | Mersen | |
| Series | NH aM 500 V Fuse-links | |
| Model | NH3AM50V315 | |
| Manufacturer part number | P232520 | |
| EAN | 8430399026893 | |
| Product type | DIN NH aM fuse-link | |
| Fuse size | NH3 | |
| Rated current | 315 A | |
| Rated voltage AC | 500 V | |
| Rated voltage DC | 250 V | |
| Utilisation category | aM | |
| Breaking capacity | 120 kA AC | |
| Body width | 71.9 mm | |
| Power dissipation | 21 W | |
| Weight | Approx. 1.05 kg | |
| Package quantity | 1 | |
| RoHS compliant | Yes | |
| HS Code | 85361090 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen NH3AM50V315 used for?
This fuse-link provides short-circuit protection for industrial motor circuits and should be used together with suitable overload protection.
What is the current rating of this fuse?
The NH3AM50V315 has a 315 A rated current.
What voltage is this fuse designed for?
The fuse is designed for 500 V AC and 250 V DC systems.
What does the aM utilisation category mean?
aM fuse-links provide partial-range protection specifically for motor circuits, protecting against short circuits whilst allowing normal motor starting currents to pass.
Does this fuse protect against overloads?
No. An aM fuse-link provides short-circuit protection only and must always be used with an appropriate overload protection device.
Trusted by Electrical Professionals Worldwide
Mersen NH aM fuse-links are trusted by OEMs, panel builders and industrial maintenance engineers for dependable motor circuit protection across industrial automation, manufacturing and power distribution systems.
