Fuses

Mersen's 5ST miniature fuses cover a range including multiple amperages for 250VAC, for the protection of electrical distribution circuits and other industrial applications. 5ST miniature fuses are time-delay fuses that protect your electrical equipment while withstanding the high, sudden, short current that allows a motor to start. All our technology and processes are defined to ensure the best technical performance.

Mersen's 3SF miniature fuses cover a range including multiple amperages for 60VAC to 250VAC, for the protection of electrical distribution circuits and other industrial applications. These fuses are available in size 6x32. 3SF miniature fuses are fast-acting fuses that protect your electrical equipment from the slightest high current. All our technology and processes are designed to ensure the best technical performance.

The NH system is classified among plug-in fuse systems and is composed of:
* fuse-base (possibly including terminal covers and phase barriers)
* fuse-link with blade contact
* fuse-link replacement device (LV HRC fuse puller)
Since the design of this system cannot guarantee non-interchangeability of rated current it must be handled by a qualified professional.

Type "aM" NH fuse-links are partial-range breaking capacity fuse-links, used to protect motor circuits as they are strongly current-limiting and have low power losses. They interrupt currents from 6.3 times In up to their maximum breaking capacity and are therefore suited for short-circuit protection only. They must be associated with other switchgear for protection against overloads. These fuse-links can have a rated current equal to the motor's nominal current.