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MERSEN FUSE NH 1 125A 500V AM NH1AM50V125
Mersen NH1AM50V125 NH1 aM fuse-link rated at 125 A and 500 V AC for short-circuit protection of industrial motor circuits.
£7.81
Why Choose the Mersen NH1AM50V125 NH Fuse-Link?
The Mersen NH1AM50V125 is a robust NH size 1 aM fuse-link designed to provide dependable short-circuit protection for industrial motors and associated electrical equipment. Rated at 125 A and 500 V AC, it is suitable for motor control centres, industrial switchboards, machinery and low-voltage distribution systems.
Its aM utilisation category provides partial-range protection specifically intended for motor circuits. The fuse-link rapidly interrupts high fault currents and limits the energy passed to downstream equipment, helping protect cables, contactors, motor starters and other circuit components from short-circuit damage.
The NH1AM50V125 features a durable ceramic body, standard NH blade contacts, live gripping lugs and a practical double indication system. Its DIN-standard NH1 construction enables installation in compatible NH fuse bases, fuse disconnectors and switch-fuse assemblies used throughout industrial electrical systems.
Key Advantages
- Designed specifically for industrial motor short-circuit protection.
- 125 A rated current for demanding motor circuits.
- 500 V AC rated voltage for low-voltage industrial networks.
- Current-limiting operation helps reduce thermal and mechanical fault stress.
- Double indication system allows convenient fuse status identification.
- Live gripping lugs support handling with an approved NH fuse puller.
- Standard NH1 construction suits compatible industrial fuse equipment.
Key Features
- Mersen NH aM 500 V fuse-link series.
- NH1 fuse size.
- 125 A rated current.
- 500 V AC rated voltage.
- aM partial-range operating characteristic.
- Double visual indication system.
- Live, non-isolated gripping lugs.
- Standard NH blade contacts.
- Robust ceramic insulating body.
- 40 mm body width.
Reliable Short-Circuit Protection for Motor Circuits
The Mersen NH1AM50V125 is engineered to interrupt damaging short-circuit currents before they can cause serious thermal or mechanical damage to motors, contactors, cables and switchgear. Its current-limiting performance reduces the peak fault current and let-through energy reaching downstream components.
As an aM fuse-link, the NH1AM50V125 does not provide full-range overload protection. It must therefore be coordinated with a correctly selected overload relay, motor protection circuit breaker or equivalent device to provide complete protection for the motor circuit.
Typical Applications
- Industrial motor control centres.
- Motor starters and contactor assemblies.
- Pumps, fans and compressor systems.
- Conveyors and material handling machinery.
- Machine-building and OEM control panels.
- Industrial switchboards and switch-fuse assemblies.
Technical Specifications
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| Fuse Indication | Dual indicator | |
|---|---|---|
| Current | 125 A | |
| Voltage | 500 V | |
| Device Type | Fuse link | |
| Fuse Type | NH (DIN) | |
| Fuse Size | NH1 | |
| Fuse Class | aM | |
| Manufacturer | Mersen | |
| Series | NH aM 500 V Fuse-Links | |
| Model | NH1AM50V125 | |
| Manufacturer item number | E232511 | |
| Product type | NH motor-circuit fuse-link | |
| Fuse size | NH1 | |
| Utilisation category | aM | |
| Rated current | 125 A | |
| Rated voltage | 500 V AC | |
| Current type | AC | |
| Protection range | Partial-range short-circuit protection | |
| Indication system | Double indicator | |
| Gripping lug design | Live / non-isolated tags | |
| Contact type | NH blade contacts | |
| Body material | Ceramic | |
| Body width | 40 mm | |
| EAN | 8430399026800 | |
| Mounting | Compatible NH1 fuse base or switch-fuse assembly | |
| RoHS compliance | Yes | |
| HS Code | 85361090 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen NH1AM50V125 used for?
The Mersen NH1AM50V125 provides short-circuit protection for industrial motors, motor starters and associated electrical equipment.
What are the current and voltage ratings?
The fuse-link has a rated current of 125 A and a rated operating voltage of 500 V AC.
Does the NH1AM50V125 provide overload protection?
No. Its aM characteristic provides partial-range short-circuit protection, so the motor circuit must also include a suitable overload protection device.
What fuse size is the NH1AM50V125?
This product is an NH1 size fuse-link with a body width of approximately 40 mm.
Which fuse holder is compatible?
The NH1AM50V125 is designed for compatible NH1 fuse bases, fuse disconnectors and switch-fuse assemblies. Installation and replacement should be undertaken by qualified electrical personnel.
Trusted Industrial Motor Protection
Mersen NH fuse-links are widely specified by electrical engineers, panel builders and machine manufacturers for dependable short-circuit protection in industrial motor control systems.
