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.
