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.

Ampere Range 400 - 1250 A

Size per Standard

4
4a

Speed / Characteristic aM

Body Style Square

Body Material Ceramic

Materials Contact Copper, Silver-plated

Standards

DIN 57636 Part 201
VDE 0636 Part 201
IEC 60269-1 and -2

Applications aM: Partial purpose, motor circuit protection

ROHS Compliant Consult Technical Services

Lead Free Consult Technical Services

CE conformity Yes

Products

• NH4AAM50V1000-8 - V233560
• NH4AAM50V1250-8 - W233561
• NH4AAM50V500-8 - R233557
• NH4AAM50V630-8 - S233558
• NH4AAM50V800-8 - T233559
• NH4AM50V1000-8 - S219137
• NH4AM50V1250-8 - V219668
• NH4AM50V400-8 - P233555
• NH4AM50V500-8 - Q233556
• NH4AM50V630-8 - E222115
• NH4AM50V800-8 - V222865