Cooper Bussmann KTK-50 Fast-acting Fuse 50A 600V

Product Description

The COOPER BUSSMANN KTK-50 is a fast-acting cartridge fuse rated at 50 amps and 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 and 10.3 mm in diameter, fitting standard fuse holders used throughout panel and control circuit applications. With an interrupting rating of 100 kA at AC, this fuse provides robust fault-current protection. Electricians and controls technicians install this fuse in motor control centers, machine tool panels, and power distribution equipment where fast-acting response to overcurrent conditions is required.

The KTK-50 is suited for residential, commercial, and light industrial applications where a compact cartridge fuse is specified. It mounts in a standard fuse holder and is commonly installed in supplemental protection circuits, control transformers, and branch circuit protection panels. Its fast-acting timing characteristic makes it appropriate for resistive loads and circuits where downstream equipment requires quick disconnection on fault conditions.

Key Features

• 50-amp rating with fast-acting response for rapid overcurrent interruption
• 600-volt AC rating suitable for standard commercial and industrial distribution voltages
• 100 kA interrupting capacity at AC for high fault-current environments
• Melamine body construction for durability in fuse holder applications
• Compact form factor: 1.5 inches length, 10.3 mm diameter
• UL Listed, CSA Certified, CE Certified, and RoHS Compliant

Compatibility

Designed for use in standard cartridge fuse holders accommodating 10.3 mm diameter fuses at 600 volts AC. Consult fuse holder manufacturer specifications to confirm dimensional and voltage compatibility before installation.

Installation Notes

Installation should be performed by a qualified electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. De-energize and lock out the circuit before removing or installing any fuse. Use an appropriate fuse puller rated for the holder type — do not handle fuses in energized holders with bare hands or unrated tools. Verify the replacement fuse rating matches the circuit's amperage and voltage requirements exactly before restoring power.