Cooper Bussmann KTK-R-1/4 Cc Fuse 0.25A 600V

Product Description

The COOPER BUSSMANN KTK-R-1/4 is a Class CC cartridge fast-acting fuse rated at 0.25 amps and 600 volts AC, with an interrupting capacity of 200 kA at AC RMS. The cartridge body measures 10.3 mm in diameter and 1.5 inches in overall length. Designed for general-purpose overcurrent protection, this fuse is built to the rejection-style CC class standard, which prevents substitution with lower-rated fuse classes. Electricians and control panel technicians install this type of fuse in industrial control circuits, motor branch circuits, and supplementary protection applications where fast-acting response is required to protect sensitive downstream components.

This fuse is suited for use in CC-class fuse holders and fuse blocks in both commercial and light industrial electrical systems. Its fast-acting time-current characteristic makes it appropriate for resistive loads and circuits where inrush current is not a concern. The rejection feature ensures the fuse holder accepts only CC-class fuses, maintaining system integrity and preventing field substitutions with non-compliant alternatives. Typical installation environments include control panels, machine tool circuits, and branch circuit protection assemblies.

Key Features

• Class CC rejection-style body prevents substitution with lower-rated fuse classes
• Fast-acting response for quick overcurrent protection on resistive and low-inrush circuits
• 200 kA interrupting capacity at AC RMS for high fault-current environments
• Compact cartridge form factor: 10.3 mm diameter, 1.5 inches overall length
• Mounts in standard CC-class fuse holders and fuse blocks
• CE Certified, CSA Certified, UL Listed, and RoHS Compliant

Compatibility

Designed for use in CC-class fuse holders and rejection-style fuse blocks rated for 600-volt, fast-acting cartridge fuses. The rejection-style body is compatible only with fuse holders designed to accept Class CC fuses.

Installation Notes

Installation should be performed by a qualified electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize and lock out the circuit before removing or inserting the fuse. Use a properly rated fuse puller when handling cartridge fuses to avoid contact with energized parts. Verify the fuse holder is rated for Class CC fuses and the circuit voltage and amperage do not exceed the fuse rating.