Cooper Bussmann MDA-2-1/2-R Cartridge Time Delay Fuse 2.5A

Product Description

The COOPER BUSSMANN MDA-2-1/2-R is a mini cartridge time delay fuse rated at 2.5 amps and 250 volts. It is constructed with a ceramic fuse body, measuring 1.25 inches in overall length and 0.25 inches in diameter. Time delay fuses are designed to tolerate brief inrush currents without nuisance tripping, while still opening the circuit on sustained overloads or fault conditions. This fuse is installed in control circuits, instrumentation panels, and low-voltage equipment where precise overcurrent protection is required. Licensed electricians and electronics technicians are the primary installers.

This fuse is suited for light commercial and industrial control panel applications where a small-format, time delay overcurrent device is specified. Its mini cartridge form factor fits standard fuse holders and blocks designed for 0.25-inch diameter cartridge fuses. The 250-volt rating covers a wide range of single-phase control circuit applications. It is commonly found in HVAC control boards, electronic test equipment, and instrumentation enclosures where component-level protection is needed.

Key Features

• 2.5A time delay rating tolerates brief inrush currents without nuisance tripping
• 250V voltage rating suitable for single-phase control and instrumentation circuits
• Ceramic fuse body provides thermal stability and arc suppression
• Mini cartridge form factor: 1.25 inches OAL x 0.25 inches diameter
• UL Listed (Guide JDYX, File E19180) and CSA Class 1422-01 Certified
• RoHS compliant and meets MIL-STD-202 Method 204 vibration requirements

Compatibility

Designed as an OEM-style replacement for mini cartridge fuse holders and blocks accepting 0.25-inch diameter, 1.25-inch overall length time delay fuses rated at 250V.

Installation Notes

Installation should be performed by a qualified electrician or instrumentation technician in accordance with applicable NEC requirements. Always de-energize and verify the circuit is dead before replacing a fuse. Confirm the replacement fuse amperage, voltage, and time delay characteristics match the original specification before installing. Never substitute a higher-amperage or fast-acting fuse where a time delay type is specified by the equipment manufacturer.