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The COOPER BUSSMANN ABC-2-1/2-R is a mini cartridge fast-acting fuse rated at 2.5 amps. It features a ceramic body measuring 1.25 inches in overall length and 0.25 inches in diameter. Designed for overcurrent protection in low-voltage control circuits, this fuse responds rapidly to fault conditions to protect sensitive downstream components. It carries an interrupting rating of 10,000 amps at 125 volts and 100 amps at 250 volts, making it suitable for a range of panel and equipment protection applications. HVAC technicians, electricians, and equipment service techs commonly install this fuse in control boards, transformers, and instrumentation circuits.
This fuse is used in residential and light commercial applications where a mini cartridge form factor is required. Common installation scenarios include low-voltage HVAC control circuits, electronic equipment enclosures, and panel-mounted fuse holders that accept a 0.25-inch diameter cartridge fuse. It is sold individually with a minimum order quantity of 5 units.
Designed as an OEM-style replacement fuse for mini cartridge fuse holders accepting a 0.25-inch diameter, 1.25-inch overall length fast-acting fuse in HVAC control, electrical, and instrumentation applications.
Installation should be performed by a licensed electrician or qualified HVAC technician. Always de-energize the circuit and verify zero voltage with a multimeter before replacing a fuse. Confirm the fuse holder is rated for the cartridge dimensions and voltage of this fuse. Follow applicable NEC guidelines for overcurrent protection device selection and replacement.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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