Cooper Bussmann MDA-10-R Cartridge Time Delay Fuse 10A

Product Description

The COOPER BUSSMANN MDA-10-R is a miniature ceramic cartridge fuse rated at 10 amps and 250 volts with a time-delay (slow-blow) characteristic. It measures 1.25 inches in overall length and 0.25 inches in diameter, conforming to the standard 1/4 x 1-1/4 inch miniature fuse form factor. The time-delay design allows brief inrush currents to pass without nuisance opening, while still providing reliable overcurrent protection against sustained fault conditions. Electricians and electronics technicians install this fuse in control circuits, instrumentation, HVAC equipment, and light industrial equipment where a slow-blow fuse is specified.

This fuse is suited for low-current branch and control circuit protection in both residential and light commercial applications. Typical installations include HVAC control boards, transformers, small motors, and other loads where startup inrush current exceeds steady-state draw. It is compatible with standard panel-mount and inline fuse holders that accept 1/4 x 1-1/4 inch cartridge fuses. The 250-volt rating makes it appropriate for single-phase low-voltage control circuits and instrumentation panels.

Key Features

• Time-delay (slow-blow) fuse element tolerates temporary inrush currents without nuisance tripping
• Ceramic fuse body provides heat resistance and contains arc energy under fault conditions
• 10-amp, 250-volt rating suitable for low-voltage control and instrumentation circuits
• Standard 1/4 x 1-1/4 inch miniature cartridge form factor fits a wide range of fuse holders
• UL Listed (Guide JDYX, File E19180) and CSA Class 1422-01 Certified
• RoHS compliant and tested to MIL-STD-202 Method 204 for vibration resistance

Compatibility

Designed as an OEM-style replacement for standard 1/4 x 1-1/4 inch miniature cartridge fuse holders requiring a 10-amp, 250-volt time-delay fuse.

Installation Notes

De-energize and lock out the equipment before replacing this fuse. Verify that the replacement fuse matches the amperage, voltage, and time-delay rating specified on the equipment nameplate or wiring diagram. Use an approved fuse puller for cartridge fuse holders to avoid contact with fuse terminals. Always identify and correct the root cause of a blown fuse before returning the circuit to service.