Cooper Bussmann MDA-6-1/4-R Cartridge Time Delay Fuse

Product Description

The COOPER BUSSMANN MDA-6-1/4-R is a miniature cartridge time delay fuse rated at 6.25 amps and 250 volts. Built with a ceramic body, it provides reliable overcurrent protection in low-voltage control circuits, instrumentation panels, and light electrical equipment. The time delay characteristic allows brief inrush currents to pass without nuisance tripping while still interrupting sustained overloads. Electricians and electronics technicians install this fuse in fuseholders designed for the 1/4-inch diameter mini cartridge form factor. At 1.25 inches overall length, it fits standard mini fuse clips and panel-mount holders used in control boards, test equipment, and similar applications.

This fuse is suited for residential and commercial control circuit protection where a compact, ceramic mini cartridge fuse is specified. Common install scenarios include HVAC control panels, instrumentation enclosures, small appliance protection circuits, and OEM equipment requiring a time delay fuse in the mini cartridge form. Its RoHS-compliant construction makes it appropriate for environmentally regulated applications and equipment destined for international markets.

Key Features

• 6.25-amp time delay rating tolerates inrush without nuisance tripping
• 250-volt rating suitable for standard low-voltage control circuits
• Ceramic body construction for reliable thermal and mechanical durability
• Mini cartridge form factor: 1.25 inches OAL, 0.25 inches diameter
• UL Listed (Guide JDYX, File E19180) and CSA Class 1422-01 Certified
• MIL-STD-202 Method 204 tested and RoHS Compliant

Compatibility

Designed for use in fuseholders and fuse clips that accept the mini cartridge form factor with a 0.25-inch diameter and 1.25-inch overall length.

Installation Notes

Always de-energize and lock out the circuit before removing or installing fuses. Use an appropriate fuse puller when removing cartridge fuses from spring-clip holders to avoid contact with live terminals. Verify the replacement fuse matches the circuit's required amperage, voltage, and time delay characteristics before installation. Work performed on electrical panels and control circuits should conform to applicable NEC requirements and local codes.