Cooper Bussmann MDA-1-1/2-R Time Delay Fuse 1.5A

Product Description

The COOPER BUSSMANN MDA-1-1/2-R is a ceramic cartridge time delay fuse rated at 1.5 amps and 250 volts. Built to the mini fuse form factor, it measures 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 well suited for protecting small motors, transformers, and sensitive electronic circuits. Electricians and electronics technicians install this fuse in low-current control circuits, instrumentation panels, and light commercial equipment where overcurrent protection must tolerate startup surges without sacrificing fault response.

This fuse is used in residential and light commercial applications where a compact, reliable overcurrent device is required in control panels, HVAC equipment control boards, and similar low-voltage instrumentation circuits. Its ceramic body provides added arc-suppression capability compared to glass-body equivalents, supporting stable performance across repeated fault events. The mini cartridge format fits standard fuse holders designed for 0.25-inch diameter cartridge fuses.

Key Features

• Time delay action tolerates motor and transformer inrush without nuisance tripping
• Ceramic body construction provides superior arc suppression versus glass alternatives
• Rated 1.5 amps at 250 volts for low-current control circuit protection
• Mini cartridge form factor: 1.25 inches OAL, 0.25 inches diameter
• UL Listed (Guide JDYX, File E19180) and CSA Class 1422-01 Certified
• RoHS compliant and qualified to MIL-STD-202 Method 204 vibration testing

Compatibility

Designed as an OEM-style replacement for mini cartridge fuse positions requiring a 0.25-inch diameter, 1.25-inch OAL time delay fuse rated at 1.5 amps and 250 volts.

Installation Notes

Installation is typically performed by a licensed electrician or qualified technician. Always de-energize and lock out the circuit before replacing a fuse. Verify the replacement fuse amperage and voltage rating match the circuit requirements exactly before insertion. Do not substitute a fast-acting fuse in applications specified for time delay, as nuisance tripping or inadequate inrush tolerance may result.