Eaton mdl-1-r Time Delay Fuse 1A 250V Ferrule

Product Description

The EATON mdl-1-r is a small-dimension, time-delay fuse rated at 1 amp and 250 volts AC (32 volts DC, self-certified). It is designed for electronic circuit protection where a slow-blow characteristic is required to ride through inrush currents without nuisance tripping. The body is fiberglass construction with a glass tube and nickel-plated brass ferrule end caps, measuring 0.25 inches in diameter by 1.25 inches in length and weighing approximately 0.004 pounds. It carries an interrupt rating of 10 kAIC, making it appropriate for low-energy electronic control circuits. Licensed electricians and electronics technicians are the typical installers for this component.

This fuse is suited for electronic circuits in residential, commercial, and light industrial applications where controlled time-delay overcurrent protection is needed. The MDL series is a widely recognized form factor used in instrumentation panels, control boards, HVAC electronic controls, and other low-voltage electronic assemblies. Its compact ferrule-end design fits standard 0.25-inch-diameter fuse holders and blocks.

Key Features

• Time-delay response: 120 seconds maximum at 200% load, 5 seconds minimum at 200% load, 60 minutes maximum at 135% load
• 1 amp, 250 volts AC rating with 32 volts DC self-certified rating
• 10 kAIC interrupt rating for low-energy circuit protection
• Fiberglass body with glass tube and nickel-plated brass ferrule end caps
• Ferrule-end connection on both ends fits standard 0.25-inch fuse holders
• CSA certified, RU Listed, and RoHS compliant

Compatibility

Designed as an OEM-style replacement for small-dimension ferrule-end time-delay fuses used in electronic control circuits and instrumentation requiring a 0.25-inch-diameter by 1.25-inch-length fuse form factor.

Installation Notes

Installation should be performed by a qualified electrician or electronics technician in accordance with the NEC and applicable local codes. Always de-energize and lock out the circuit before replacing a fuse. Verify that the replacement fuse matches the amperage, voltage, and time-delay rating specified by the equipment manufacturer. Do not substitute a fast-acting fuse where a time-delay type is specified, as this may cause nuisance tripping on inrush currents.

Technical Specifications

• Amperage: 1 amp
• Voltage: 250 volts AC / 32 volts DC (self-certified)
• Interrupt Rating: 10 kAIC
• Response Type: Time Delay
• Response Time: 120 sec maximum at 200%, 5 sec minimum at 200%, 60 min maximum at 135%
• Diameter: 0.25 inches
• Length: 1.25 inches
• Weight: 0.004 pounds
• Material: Fiberglass body, glass tube, nickel-plated brass end caps
• Connection Type: Ferrule end x ferrule end
• Certifications: CSA, RU Listed, RoHS

Standard Information

• Brand: EATON
• Manufacturer Part Number: mdl-1-r