Cooper Bussmann MDL-25 Cartridge Time Delay Fuse 25A

Product Description

The COOPER BUSSMANN MDL-25 is a glass-body cartridge time delay fuse rated at 25 amps. It measures 1.25 inches in overall length and 0.25 inches in diameter, conforming to the standard miniature fuse form factor. Time delay fuses are designed to tolerate brief inrush currents while still opening on sustained overloads or fault conditions. This fuse is used in control circuits, instrument panels, and low-current branch circuits where nuisance tripping on startup surges must be avoided. Licensed electricians and control panel technicians are the primary installers. The glass body allows visual inspection of the element without a continuity tester.

The MDL-25 is suited for residential and light commercial applications including HVAC control boards, appliance control circuits, electronic equipment panels, and instrument enclosures that require a 1/4 inch diameter miniature cartridge fuse with time delay characteristics. Its compact size fits standard minifuse clips and inline fuse holders designed for the 1/4 inch by 1.25 inch cartridge format. Where equipment OEM documentation specifies an MDL-series fuse, this part is the direct replacement.

Key Features

• 25-amp time delay rating tolerates motor and transformer inrush without nuisance opens
• Glass body allows quick visual inspection of the fuse element
• Miniature cartridge form factor: 1.25 inches OAL, 0.25 inches diameter
• RoHS compliant and UL 248-14 recognized
• CE certified and CSA Component Accepted under Class No. 1422 30
• Meets MIL-STD-202 Method 204 and Method 207 HI Shock requirements

Compatibility

Designed as an OEM-style replacement for control circuits and instrument panels requiring a 1/4 inch diameter by 1.25 inch miniature cartridge time delay fuse. Verify OEM documentation for the correct amperage and time delay rating before substituting.

Installation Notes

Installation should be performed by a qualified electrician or control technician. De-energize and lock out the circuit before removing or replacing any fuse. Confirm the replacement fuse amperage and time delay class match the equipment nameplate or schematic requirements exactly. NEC Article 240 governs overcurrent protection; follow applicable local codes for control circuit fusing.