Cooper Bussmann KTK-25 Cartridge Fast-acting Fuse 25A 600V

Product Description

The COOPER BUSSMANN KTK-25 is a cartridge-style, fast-acting fuse rated at 25 amps and 600 volts AC. It is designed for general-purpose overcurrent protection in industrial control panels, HVAC equipment, and power distribution circuits. The fuse body is constructed from melamine, a durable thermoset material suited to high-interrupt environments. With a 100 kA interrupting rating at AC, this fuse can safely clear high-fault-current events without catastrophic failure. Electricians and control panel builders install this fuse in fuse holders sized for the standard 10.3 mm diameter, 38.1 mm length ferrule cartridge form factor. It meets UL, CSA, CE, and RoHS requirements.

The KTK-25 is well suited for branch circuit and control circuit protection in commercial and light industrial applications. Common install locations include HVAC unit control panels, motor control centers, machine tool circuits, and power supply protection. The fast-acting response characteristic makes it appropriate for resistive loads and semiconductor protection where no time-delay is needed or desired. It mounts in a standard cartridge fuse holder and does not require special tooling beyond an appropriate fuse puller.

Key Features

• 25-amp rating with fast-acting response for immediate overcurrent interruption
• 600-volt AC rated for use in standard industrial and HVAC control voltage circuits
• 100 kA interrupting capacity at AC for high-fault-current protection
• Melamine fuse body provides heat resistance and structural integrity under fault conditions
• Standard ferrule cartridge form factor: 10.3 mm diameter, 38.1 mm length
• UL Listed, CSA Certified, CE Certified, and RoHS Compliant

Compatibility

Designed for use in standard cartridge fuse holders that accept a 10.3 mm diameter, 38.1 mm length ferrule-style fuse. Suitable for general-purpose overcurrent protection in control panels, HVAC equipment, and industrial machinery where a 600-volt fast-acting fuse is specified.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize and lock out the circuit before removing or installing any fuse. Use an appropriate fuse puller rated for cartridge fuses — do not handle live fuses with bare hands or uninsulated tools. Verify the fuse holder is rated for the voltage and amperage of the application before installing.