Cooper Bussmann NOS-35 Cartridge Fast-acting Fuse K5 35A

Product Description

The COOPER BUSSMANN NOS-35 is a Class K5 cartridge fast-acting fuse rated for 35 amps and 600 volts AC/DC. It provides overcurrent protection in industrial and commercial electrical systems where fast response to fault conditions is required. The cartridge body measures 26.90 mm in diameter and 5.5 inches in overall length, fitting standard fuse holders designed for this form factor. With an interrupting rating of 50 kA, the NOS-35 is built for environments where high fault currents are a consideration. Electricians and maintenance technicians install this fuse as a direct replacement in branch circuit and feeder protection applications.

The NOS-35 is suited for use in general-purpose electrical distribution applications across residential, commercial, and light industrial settings. It mounts in a compatible fuse holder and is commonly found protecting motors, transformers, and branch circuit equipment where a fast-acting response characteristic is specified. Its Class K5 designation makes it appropriate for systems where upstream and downstream coordination is designed around that interrupting class.

Key Features

• Class K5 fast-acting fuse for general-purpose overcurrent protection
• 35-amp continuous current rating at 600 volts AC/DC
• 50 kA interrupting rating for high fault-current environments
• Cartridge body: 26.90 mm diameter, 5.5 inches overall length
• Mounts in standard fuse holders for this form factor
• CE Certified, CSA Certified, and UL Listed

Compatibility

Designed for use in fuse holders compatible with Class K5 cartridge fuses at the 35-amp, 600-volt rating. Verify holder dimensions and class rating before installation.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize and lock out the circuit completely before removing or installing any fuse. Confirm the holder is rated for Class K5 fuses at 600 volts and 35 amps before insertion. Never install a fuse with a higher amperage rating than the circuit is designed to carry.