Cooper Bussmann MDA-7-R Time Delay Fuse 7A 250V Mini

Product Description

The COOPER BUSSMANN MDA-7-R is a miniature time delay cartridge fuse rated at 7 amps and 250 volts. It is designed to protect low-current circuits from sustained overcurrent conditions while tolerating brief inrush surges without nuisance tripping. The ceramic body provides thermal stability and arc suppression during fault interruption. At 1.25 inches overall length and 0.25 inches diameter, this is a compact, industry-standard mini fuse format. Licensed electricians, HVAC technicians, and electronics service professionals install this fuse type in control circuits, instrumentation panels, and low-voltage power supplies.

This fuse is suited for residential and light commercial applications where a 250-volt, 7-amp time delay element is required. Typical installations include motor control panels, HVAC control boards, test equipment, and industrial instrumentation where brief startup currents must be accommodated. The mini cartridge form factor fits standard 1/4 inch by 1-1/4 inch fuse holders and blocks commonly found in control panels and service equipment.

Key Features

• Time delay action tolerates inrush current without nuisance tripping
• Ceramic body provides arc suppression and thermal durability
• Mini cartridge form factor: 1.25 inches OAL, 0.25 inches diameter
• Rated 7 amps at 250 volts for broad circuit compatibility
• UL Listed and CSA Certified for use in listed equipment
• RoHS compliant per MIL-STD-202 Method 204

Compatibility

Designed as a direct-fit replacement for standard 1/4 inch by 1-1/4 inch mini time delay fuse holders and fuse blocks rated for 250 volts or less.

Installation Notes

Installation of cartridge fuses should be performed by a qualified electrician or licensed technician. Always de-energize and lockout/tagout the circuit before replacing a fuse. Use an appropriate fuse puller for mini cartridge fuses to avoid damage to the fuse holder contacts. Verify the replacement fuse amperage and voltage rating match the original equipment specification before restoring power.