Mersen NH3AM50V400

The NH fuse-link system is a plug-in fuse configuration comprising a fuse-base, which may include terminal covers and phase barriers, along with a fuse-link featuring a blade contact and a fuse-link replacement device, known as the LV HRC fuse puller. Due to the design, which does not ensure non-interchangeability of rated current, handling must be performed by qualified professionals.

Type aM NH fuse-links are characterized by their partial-range breaking capacity, specifically engineered for motor circuit protection. They exhibit strong current-limiting capabilities and low power losses. The fuse-links can interrupt currents ranging from 6.3 times the nominal current (In) up to their maximum breaking capacity, making them suitable exclusively for short-circuit protection. It is essential that these fuse-links are used in conjunction with other switchgear to ensure protection against overloads. Additionally, they can be rated for currents that match the motor's nominal current.