Cooper Bussmann ABC-5-R Fast-acting Cartridge Fuse 5A

Product Description

The COOPER BUSSMANN ABC-5-R is a fast-acting ceramic cartridge fuse rated at 5 amps and designed for overcurrent protection in low-voltage control circuits, instruments, and light electrical equipment. At 1.25 inches in overall length and 0.25 inches in diameter, it fits the widely used 1/4 x 1-1/4 inch cartridge fuse format. The ABC-5-R carries an interrupting rating of 10,000 amps at 125 volts and 200 amps at 250 volts, making it suitable for circuits where high fault-current clearing is required. Licensed electricians, HVAC technicians, and control panel builders commonly install this fuse in fuse holders and panel-mount blocks during service and new construction work.

This fuse is used in residential and light commercial applications wherever a 5-amp fast-acting 1/4 x 1-1/4 inch cartridge fuse is required. Typical installations include HVAC control boards, instruments, small appliances, power supplies, and low-voltage control panels. Its ceramic body construction provides reliable heat dissipation under fault conditions. The ABC-5-R meets multiple industry standards including UL and CSA certifications, making it appropriate for use in equipment that must pass listed-product requirements.

Key Features

• Fast-acting fuse response for immediate overcurrent protection
• Ceramic body for superior heat resistance and fault containment
• 10,000-amp interrupting rating at 125 volts
• 200-amp interrupting rating at 250 volts
• Standard 1/4 x 1-1/4 inch cartridge form factor for broad holder compatibility
• UL Listed and CSA Certified to multiple applicable standards

Compatibility

Designed as an OEM-style replacement for standard 1/4 x 1-1/4 inch fast-acting cartridge fuse applications in HVAC control circuits, instrument panels, and low-voltage electrical equipment.

Installation Notes

De-energize and lock out the circuit before replacing any cartridge fuse. Use an appropriately rated fuse puller to remove and seat the fuse in its holder — never use bare hands on an energized circuit. Verify the replacement fuse matches the amperage, voltage, and interrupting rating required by the equipment nameplate or schematic. Installation should comply with NEC Article 240 and applicable local electrical codes.