Why Choose the Mersen NH0AM69V125 Motor Protection Fuse?
The Mersen NH0AM69V125 is a high-performance DIN NH aM fuse-link designed to provide dependable short-circuit protection for motors, motor starters and associated industrial electrical equipment. As part of the Mersen NH motor protection range, this NH0 fuse-link accommodates the temporary inrush currents produced during motor starting while responding rapidly to damaging fault currents.
The specialised aM operating characteristic makes the NH0AM69V125 particularly suitable for motor circuits in machinery, manufacturing equipment and industrial control systems. As an aM partial-range fuse-link, it provides short-circuit protection and must be used alongside a suitable overload protection device, such as a thermal overload relay or electronic motor protection relay.
With a rated current of 125 A, a rated voltage of 690 V AC and an 80 kA breaking capacity, the NH0AM69V125 is suitable for demanding low-voltage motor control applications. Its standard NH0 format, live gripping lugs and integrated double indicator support straightforward installation, removal and fault identification within compatible NH fuse bases.
Key Advantages
- Purpose-designed aM fuse-link for industrial motor circuits.
- 125 A rated current for demanding motor protection applications.
- 690 V AC voltage rating for industrial power systems.
- 80 kA breaking capacity for dependable short-circuit interruption.
- Allows normal motor starting currents without unnecessary fuse operation.
- Integrated double indicator simplifies maintenance and fault finding.
Key Features
- Mersen NH aM 690 V AC fuse-link series.
- DIN NH Size 0 construction.
- 125 A rated current.
- 690 V AC rated voltage.
- aM partial-range motor protection characteristic.
- 80 kA AC breaking capacity.
- Live gripping lugs for use with a compatible NH fuse puller.
- Integrated double visual operation indicator.
Reliable Short-Circuit Protection for Motor Circuits
The Mersen NH0AM69V125 is engineered to protect motor circuits against high short-circuit currents while allowing the elevated current normally drawn during motor acceleration. Its current-limiting performance helps reduce the thermal and electrodynamic stress imposed on contactors, cables, switchgear and connected equipment during a fault.
Because the aM characteristic does not provide complete overload protection, the fuse-link should be coordinated with a correctly selected overload relay. This combination provides effective motor protection while helping minimise nuisance operation during normal starting and operating conditions.
Typical Applications
- Industrial electric motor circuits.
- Motor control centres and starter panels.
- Contactors and motor switching equipment.
- Manufacturing and processing machinery.
- Pumps, fans, conveyors and compressors.
- OEM automation and electrical control panels.
