Littelfuse NLS007 Class K5 One-time Fuse

Product Description

The LITTELFUSE NLS007 is a Class K5 one-time fuse designed for overcurrent protection in electrical distribution systems. Class K5 fuses provide a high level of fault-current interrupting capacity in a compact, non-renewable form factor. Once the fuse operates under a fault or overload condition, it must be replaced rather than reset or reused. This type of fuse is installed by licensed electricians in panelboards, disconnect switches, and industrial control equipment where reliable, code-compliant overcurrent protection is required.

Class K5 one-time fuses are commonly used in commercial and light industrial electrical systems, including motor branch circuits, feeder circuits, and equipment disconnect applications. They are suited for installations where a cost-effective, non-renewable fuse meets the overcurrent protection requirements of the NEC. The NLS007 designation identifies this specific amperage rating within the LITTELFUSE NLS series of Class K5 fuses.

Key Features

• Class K5 rating provides high interrupting capacity for fault-current protection
• One-time, non-renewable design ensures replacement after each overcurrent event
• Compact form factor fits standard fuse holders and disconnect switches
• Suitable for motor branch circuit and feeder circuit protection applications

Compatibility

Designed as an OEM-style replacement for Class K5 one-time fuses in standard fuse holders and electrical disconnect assemblies rated for this fuse class and size.

Installation Notes

Installation and replacement should be performed by a qualified electrician in accordance with the National Electrical Code (NEC) and applicable local codes. Always de-energize and lockout/tagout the circuit before removing or installing fuses. Verify that the replacement fuse class, voltage rating, and amperage rating match the requirements of the protected circuit before installing.

Technical Specifications

• Fuse Class: K5
• Type: One-Time (Non-Renewable)
• UPC: 07945837059

Standard Information

• Brand: LITTELFUSE
• Manufacturer Part Number: NLS007