Why Choose the Mersen NH000AM69V4 NH Fuse-Link?
The Mersen NH000AM69V4 is a compact DIN NH aM fuse-link designed to provide dependable short-circuit protection for motors and motor-related electrical circuits. As part of the established Mersen NH aM 690 V fuse-link range, it offers strong current-limiting performance and low power losses for industrial motor control applications.
Featuring an aM operating characteristic, this fuse-link is intended specifically for partial-range motor circuit protection. It interrupts high fault currents while allowing normal motor starting currents to pass without unnecessary operation. As an aM fuse does not provide overload protection, it must be used with a suitable overload relay, motor protection device or other compatible protective equipment.
With a rated current of 4 A, a rated voltage of 690 V AC and an 80 kA breaking capacity, the NH000AM69V4 is suitable for motor starters, control panels, machinery and industrial distribution equipment. Its compact NH000 size, double indicator and live gripping lugs support straightforward installation, inspection and replacement by qualified personnel.
Key Advantages
- Purpose-designed aM protection for motor circuits.
- 4 A rated current for smaller motor and control applications.
- 690 V AC voltage rating for industrial electrical systems.
- 80 kA breaking capacity for reliable short-circuit interruption.
- Strong current-limiting performance helps reduce fault energy.
- Low power dissipation supports efficient operation.
- Double indicator enables rapid visual identification of fuse operation.
- Compact NH000 construction for compatible fuse bases and switchgear.
Key Features
- Mersen NH aM 690 V fuse-link series.
- Catalogue number: NH000AM69V4.
- Item number: Q227852.
- 4 A rated current.
- 690 V AC rated voltage.
- aM partial-range operating characteristic.
- NH000 fuse size.
- Double visual indication system.
- Live gripping lugs for use with an approved NH fuse puller.
- Silver-plated copper knife-blade terminals.
- Durable ceramic insulating body.
- RoHS compliant.
Reliable Short-Circuit Protection for Motor Circuits
The Mersen NH000AM69V4 is engineered to interrupt high short-circuit currents while tolerating the temporary current peaks produced when a motor starts. Its current-limiting construction reduces the energy passed through the circuit during a fault, helping protect contactors, cables and other motor control components.
Because the aM characteristic provides partial-range protection, the fuse-link must be combined with suitable overload protection. When correctly coordinated with a motor starter or overload relay, it provides an effective and reliable motor protection solution for industrial machinery and automation systems.
Typical Applications
- Industrial motor starters.
- Motor control centres.
- Contactors and overload relay assemblies.
- Industrial machinery and production equipment.
- Pumps, fans and conveyor systems.
- Electrical control panels.
- OEM motor control equipment.
