Cooper Bussmann KTK-R-7 Cc Class Fast-acting Fuse 7A 600V

Product Description

The COOPER BUSSMANN KTK-R-7 is a CC-class, fast-acting cartridge fuse rated at 7 amps and 600 volts with a 200 kA AC interrupting capacity. Designed for general-purpose overcurrent protection, it fits standard CC-class fuse holders and provides current-limiting protection in control circuits, small motors, transformers, and similar low-amperage applications. The rejection feature prevents substitution with non-current-limiting fuses, ensuring the circuit maintains its designed protection level. Licensed electricians and instrumentation techs install this fuse in panel boards, control panels, and process equipment where precise, fast-acting protection is required.

This fuse is suited for residential and light commercial control circuits, HVAC equipment control boards, and industrial panel applications where CC-class fusing is specified. The cartridge body measures 1.5 inches in overall length with a 10.3 mm diameter, fitting standard rejection-type CC fuse holders. Its fast-acting response makes it appropriate for circuits without high inrush loads where immediate response to overcurrent events is necessary.

Key Features

• CC-class rejection design prevents installation of non-current-limiting fuses in protected circuits
• Fast-acting response for circuits requiring immediate overcurrent interruption
• 200 kA AC interrupting rating for high fault-current environments
• Compact cartridge body: 1.5 inches long, 10.3 mm diameter
• UL Listed 248-4 Class CC, CSA Certified, CE Certified, and RoHS Compliant

Compatibility

Designed for use in rejection-type CC-class fuse holders. Compatible with standard CC-class fuse holder mounts rated for 600 volts and up to 7 amps.

Installation Notes

Installation should be performed by a qualified electrician in accordance with the NEC and applicable local codes. De-energize and lock out the circuit before replacing or installing fuses. Verify the fuse holder is rated for CC-class rejection-type cartridge fuses before installation. Do not substitute with non-rejection or non-current-limiting fuse types in circuits designed for CC-class protection.