Cooper Bussmann KTK-20 Cartridge Fast-acting Fuse 20A 600V

Product Description

The COOPER BUSSMANN KTK-20 is a fast-acting cartridge fuse rated at 20 amps and 600 volts AC, designed for general-purpose overcurrent protection in control circuits, industrial panels, and supplementary protection applications. Built with a melamine body, it delivers a 100 kA interrupting rating at AC, making it suitable for installations where high fault-current capacity is required. The fuse measures 1.5 inches in overall length and 10.3 mm in diameter, fitting standard fuse holders designed for this form factor. Licensed electricians and controls technicians are the typical installers for this component class.

The KTK-20 is used in residential, commercial, and light industrial electrical panels, motor control centers, and HVAC control circuits where fast-acting overcurrent protection is needed. Its cartridge form factor fits fuse holders rated for the KTK series. The fast-acting timing response makes it well suited for resistive loads and sensitive control circuit components that require immediate interruption on overload or short-circuit conditions.

Key Features

• Fast-acting fuse response for immediate overcurrent interruption
• 20 amp rating with 600 volt AC capacity
• 100 kA interrupting rating at AC for high fault-current applications
• Melamine body construction for thermal durability
• 1.5 inch length and 10.3 mm diameter for standard KTK-series fuse holders
• UL Listed, CSA Certified, CE Marked, and RoHS Compliant

Compatibility

Designed for use with fuse holders accepting KTK-series cartridge fuses with a 10.3 mm diameter and 1.5 inch body length.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the NEC and applicable local codes. De-energize and lock out the circuit before replacing any fuse. Verify the fuse holder is rated for 600 volts and the KTK cartridge form factor before installation. Do not install a fuse with a higher ampere rating than the circuit is designed to carry.