Cooper Bussmann KTK-R-3/10 Cc Fuse 0.3A 600V

Product Description

The COOPER BUSSMANN KTK-R-3/10 is a Class CC cartridge fast-acting fuse rated at 0.3 amps and 600 volts, with an interrupting rating of 200 kiloamps at AC RMS. Built for general-purpose overcurrent protection, this fuse provides fast response to fault conditions, limiting damage to downstream components and wiring. The cartridge body measures 1.5 inches in length and 10.3 mm in diameter and mounts in a standard Class CC fuse holder. Electricians and controls technicians install this fuse in low-amperage branch circuits, control panels, and instrumentation enclosures where precise, reliable overcurrent protection is required.

This fuse is suited for residential and commercial control circuit applications where Class CC rejection-type fuses are specified. Its rejection feature prevents substitution with lower-rated or non-CC fuses, maintaining system integrity in fusible disconnect panels and fuse holders designed to the Class CC standard. Typical applications include motor control centers, HVAC control panels, and industrial enclosures requiring UL-listed overcurrent protection at 600 volts or below.

Key Features

• Class CC rejection-style cartridge body prevents insertion of incorrect fuse classes
• Fast-acting fuse timing for rapid fault clearing and downstream component protection
• 200 kA interrupting rating at AC RMS for high-fault-current environments
• 600-volt rating suitable for single-phase and three-phase control circuits
• UL Listed, CSA Certified, CE Certified, and RoHS Compliant
• Mounts in standard Class CC fuse holders

Compatibility

Designed as an OEM-style replacement or new-installation fuse for Class CC fuse holders rated for fast-acting cartridge fuses up to 600 volts.

Installation Notes

Installation should be performed by a licensed electrician in accordance with applicable NEC requirements. De-energize and lock out the circuit before removing or installing fuses. Verify the fuse holder is rated for Class CC cartridge fuses and that the circuit amperage and voltage do not exceed the fuse ratings. Do not substitute non-CC or time-delay fuses in holders designed for the Class CC rejection standard.