Eaton Bussmann mdl-5-r Time Delay Glass Fuse 5A 250V

Product Description

The EATON BUSSMANN mdl-5-r is a time-delay glass tube fuse rated at 5 amps and 250 volts AC. It features a glass tube body with nickel-plated brass endcaps and measures 0.25 inches in diameter by 1.25 inches in length, conforming to the standard MDL form factor. The time-delay characteristic allows brief inrush currents to pass without nuisance tripping, making it well suited for motor loads, transformers, and sensitive electronic equipment. Electricians and electronics technicians install this fuse as both an OEM replacement and a service part in control panels, instrumentation, and low-amperage branch circuits.

This fuse is used in residential and light commercial applications wherever a 1/4 by 1-1/4 inch MDL-style time-delay fuse is required. Common installations include motor control equipment, HVAC control boards, small appliance protection circuits, and electronic test instruments. Its 250-volt AC rating covers the vast majority of single-phase low-voltage control circuit applications. The interrupting rating of 200 AIC at 250 VAC and 10,000 AIC at 125 VAC provides the fault-clearing capacity appropriate for these circuit types.

Key Features

• Time-delay action tolerates motor inrush and capacitive load surges without nuisance opening
• Glass tube body allows visual inspection of the fuse element without removal
• Nickel-plated brass endcaps resist corrosion and maintain low contact resistance in fuse holders
• Interrupting rating of 200 AIC at 250 VAC and 10,000 AIC at 125 VAC
• UL Listed under standard 248-14, covering MDL sizes 1/16 through 8 amps (Guide JDYX, File E19180)
• CSA Certified for MDL sizes 1/16 through 8 amps (Class No. 1422-01)

Compatibility

Designed as a direct replacement for any standard MDL 1/4 by 1-1/4 inch time-delay glass tube fuse position rated at 5 amps and 250 volts AC. Also sold under the Cooper Bussmann and Eaton MDL-5-R designations.

Installation Notes

Installation should be performed by a qualified electrician in accordance with the National Electrical Code (NEC) and any applicable local codes. Always de-energize and lock out the circuit before replacing a fuse. Verify that the replacement fuse matches the original ampere rating, voltage rating, and physical size before installing. Do not substitute a fuse with a higher ampere rating, as this defeats overcurrent protection for the circuit.

Technical Specifications

• Ampere Rating: 5 amps
• Voltage Rating (AC): 250 volts AC
• Fuse Type: Time Delay
• Body Material: Glass tube
• Endcap Material: Nickel-plated brass
• Physical Size: 0.25 inches diameter x 1.25 inches length
• Interrupting Rating: 200 AIC at 250 VAC; 10,000 AIC at 125 VAC
• UL Listing: UL 248-14, Guide JDYX, File E19180 (MDL 1/16 - 8A)
• CSA Certification: Class No. 1422-01 (MDL 1/16 - 8A)

Standard Information

• Brand: EATON BUSSMANN
• Manufacturer Part Number: mdl-5-r