Cooper Bussmann ABC-1/2-R Cartridge Fast-acting Fuse 0.5A

Product Description

The COOPER BUSSMANN ABC-1/2-R is a ceramic-body cartridge fuse rated at 0.5 amps with fast-acting characteristics. It measures 1.25 inches overall length and 0.25 inches in diameter, fitting standard 1/4 by 1-1/4 inch fuse holders. The interrupting rating is 10,000 amps at 125 volts and 35 amps at 250 volts. This fuse is designed for low-current circuit protection in control panels, HVAC equipment, appliances, and electronic assemblies where fast response to overcurrent events is required. Licensed electricians and HVAC technicians are the typical installers, though the part is also used in OEM equipment assembly and field service repairs.

The ABC-1/2-R fits applications calling for a standard miniature cartridge fuse in 1/4 by 1-1/4 inch format. Common uses include low-voltage control circuits in residential and light commercial HVAC systems, transformer secondary protection, instrumentation panels, and general-purpose electronic equipment. The fast-acting fuse timing makes it appropriate for circuits without significant inrush current where immediate interruption on fault is the priority.

Key Features

• Fast-acting fuse timing for immediate overcurrent interruption
• Ceramic fuse body for high interrupting capacity and thermal stability
• Interrupting rating of 10,000 amps at 125 volts and 35 amps at 250 volts
• Standard 0.25 inch diameter by 1.25 inch length cartridge form factor
• CSA and UL listed, with MIL-STD-202 compliance for rugged-environment use
• Miniature fuse type suitable for compact fuse holders and panel-mount blocks

Compatibility

Designed as an OEM-style replacement for standard 1/4 by 1-1/4 inch miniature cartridge fuse holders used in residential and light commercial control circuits and electronic equipment.

Installation Notes

Always de-energize and lock out the circuit before replacing a fuse. Use an appropriate fuse puller when removing cartridge fuses from spring-clip or ferrule holders to avoid contact damage. Verify replacement fuse amperage and voltage rating match the circuit requirements before installation. Electrical work must comply with applicable NEC requirements and local codes.