Cooper Bussmann MDA-5-R Cartridge Time Delay Fuse 5A

Product Description

The COOPER BUSSMANN MDA-5-R is a ceramic cartridge time delay fuse rated at 5 amps and 250 volts. It belongs to the mini fuse form factor, measuring 1.25 inches in overall length and 0.25 inches in diameter. The time delay characteristic allows brief inrush currents to pass without nuisance tripping, making it suitable for circuits that experience startup surges. Licensed electricians and electronics technicians install this fuse in control panels, instruments, and low-current branch circuits where overcurrent protection is required. Its ceramic body provides reliable thermal performance and containment during fault conditions.

This fuse is used in residential, commercial, and light industrial applications wherever a 5-amp, 250-volt time delay overcurrent device is specified. Typical installations include HVAC control boards, appliance control circuits, test equipment, and instrumentation panels. The mini cartridge form factor fits standard fuse clips and holders designed for the 0.25-inch diameter, 1.25-inch length configuration. It is sold in a minimum order quantity of 5 units.

Key Features

• Time delay action accommodates inrush current without nuisance tripping
• Ceramic fuse body for durability and fault containment
• Mini cartridge form factor: 1.25 inches OAL, 0.25 inches diameter
• Rated 5 amps at 250 volts
• CSA Class 1422-01 Certified and UL Listed (Guide JDYX, File E19180)
• RoHS compliant and MIL-STD-202 Method 204 tested

Compatibility

Designed as a direct replacement for standard mini cartridge fuse holders and clips that accept a 0.25-inch diameter by 1.25-inch overall length time delay fuse rated up to 250 volts.

Installation Notes

Installation should be performed by a qualified electrician or technician in accordance with the NEC and applicable local codes. Always de-energize and lock out the circuit before replacing a fuse. Confirm the replacement fuse matches the amperage, voltage, and time delay rating specified on the equipment nameplate. Never substitute a fuse with a higher amperage rating to clear a repeated failure — identify and correct the root cause first.