Fuse link - NH000 aM 40A/690V - motor rated 004181410

Professional protection for motor installations

The NH000 fuse link with aM characteristics and parameters of 40A/690V is a specialized solution for protecting electric motor supply circuits. It features a high breaking capacity of 100kA, which guarantees effective protection against the effects of short circuits in industrial installations.

Construction and technical parameters

The device is manufactured in accordance with the VDE 0636-2011 standard, ensuring the highest standards of safety and reliability. The NH000 size allows for mounting in standard fuse bases of this class. The rated current of 40A and the rated voltage of 690V AC allow for operation in most industrial applications.

The built-in combined (double) indicator enables quick identification of the fuse status—both visually and mechanically—which significantly facilitates the operation and maintenance of the installation.

Application and operational benefits

The aM (motor short-circuit protection) characteristic was developed specifically for electric drive supply circuits. Unlike standard gL/gG characteristics, it provides optimal protection for relays, contactors, and motors during short circuits, while simultaneously allowing switchgear devices to be fully utilized regarding inrush currents.

The use of this fuse link protects the contacts of the switchgear from damage during faults, extending the service life of the entire control system. Thanks to the high breaking capacity of 100kA, the device handles even the most severe effects of short circuits occurring in industrial installations.

Compliance and operating conditions

The product meets the requirements of the IEC 60269 standard for the aM utilization category, confirming its suitability for professional industrial applications. The rated voltage of 690V AC allows for operation in three-phase networks with elevated parameters.

Due to its partial-range characteristic, the fuse link protects exclusively against the effects of short circuits—additional overcurrent protection is required for full circuit protection against overloads.