Cooper Bussmann KTK-45 Cartridge Fast-acting Fuse 45A 600V

Product Description

The COOPER BUSSMANN KTK-45 is a fast-acting cartridge fuse rated for 45 amps at 600 volts AC, designed for general-purpose overcurrent protection in industrial and commercial electrical systems. The melamine body measures 1.5 inches in overall length with a 10.3 mm diameter, fitting standard fuse holders used across control panels, machinery, and supplemental circuit protection applications. With an interrupting rating of 100 kA at AC, this fuse handles high fault-current environments without compromise. Electricians and panel technicians select this fuse for its reliable fast-blow response, which limits damage to downstream components during overload or short-circuit conditions.

The KTK-45 is suited for use in residential, commercial, and light industrial control circuits where supplemental fuse protection is required. It mounts in standard fuse holders and is commonly installed in motor control centers, HVAC control panels, and machine tool wiring enclosures. Its compact cartridge form factor makes it a practical fit in space-constrained panel layouts. This fuse is appropriate anywhere a fast-acting 45-amp, 600-volt supplemental fuse is specified by the equipment manufacturer or design engineer.

Key Features

• Fast-acting fuse response for immediate overcurrent interruption
• 45-amp continuous current rating at 600 volts AC
• 100 kA interrupting rating at AC for high fault-current circuits
• Melamine body construction for thermal durability
• 1.5-inch overall length, 10.3 mm diameter fits standard cartridge fuse holders
• CE Certified, CSA C22.2 No.248.14, UL Listed 248-14, and RoHS Compliant

Compatibility

Designed for use in standard cartridge fuse holders accepting a 10.3 mm diameter, 1.5-inch fuse body rated for general-purpose 600-volt supplemental overcurrent protection applications.

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 completely before removing or installing this fuse. Use an insulated fuse puller appropriate for cartridge fuses of this size. Verify the replacement fuse amperage, voltage rating, and interrupting capacity match the circuit requirements before reinstalling power.