Cooper Bussmann KTK-R-25 Fast-acting Cc Fuse 25A 600V

Product Description

The COOPER BUSSMANN KTK-R-25 is a Class CC cartridge fast-acting fuse rated at 25 amps and 600 volts AC. Designed for general-purpose overcurrent protection, it provides a fast-acting response to fault conditions, interrupting up to 200 kA at AC RMS. The body measures 1.5 inches in overall length with a 0.406-inch (10.3 mm) diameter, sized to fit Class CC rejection-style fuse holders. Electricians and industrial maintenance technicians install this fuse in control circuits, motor starters, and branch-circuit protection panels where a compact, high-interrupting-capacity fuse is required.

The KTK-R-25 is suited for use in commercial and industrial electrical systems. Its CC-class rejecting design prevents substitution with lower-rated fuse classes, making it appropriate for control panel feeders, HVAC control circuits, and other low-voltage power distribution applications where precise overcurrent protection is critical. The fast-acting characteristic responds immediately to overloads without intentional time delay, which is standard practice for protecting semiconductor components and sensitive control equipment.

Key Features

• 25-amp rating at 600 volts AC with 200 kA interrupting capacity
• Class CC rejection-style body prevents installation of incorrect fuse classes
• Fast-acting fuse timing for immediate response to fault current
• Compact cartridge form: 1.5 inches long, 10.3 mm diameter
• CE Certified, CSA Certified (C22.2 No. 248.4), UL Listed (248-4 Class CC, Guide JDDZ, File E4273), and RoHS Compliant

Compatibility

Designed for use with Class CC rejection-style fuse holders. The rejecting ferrule configuration is specific to Class CC holders and will not seat in standard cylindrical fuse blocks.

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 replacing any fuse. Confirm the fuse holder is rated for Class CC cartridge fuses before installation. Never replace a fuse with one of a higher amperage rating than the circuit is designed to carry.