Bussmann MDA-3/4-R Time Delay Fuse

Bussmann MDA-3/4-R Time Delay Fuse

Precision Overcurrent Protection for Demanding Circuits

Engineered for reliability in complex electrical systems, the Bussmann MDA-3/4-R is a time-delay (slow-blow) fuse designed to protect sensitive equipment from damaging overloads and short circuits. Ideal for applications with high inrush currents, it combines robust performance with industry-leading safety standards.

Key Features

• Time-Delay Design: Withstands temporary current surges (e.g., motor startups or transformer energization) without nuisance tripping, while providing reliable protection against sustained overloads.
• Current Rating: 3/4 Amp (0.75A) for precise circuit matching.
• Voltage Rating: 250V AC/DC, ensuring compatibility with residential, commercial, and industrial power systems.
• Rejection Base (R-Type): Patented design prevents accidental installation of incorrect fuses, enhancing safety and compliance.
• Fast-Acting Short-Circuit Response: Rapidly interrupts extreme fault currents to minimize equipment damage.
• Durable Construction: Ceramic body with sand-filled arc quenching for consistent performance and longevity.

Applications

• Motor control circuits
• Transformers, solenoids, and power supplies
• HVAC systems and compressors
• Industrial automation panels
• Lighting ballasts and inductive loads

Specifications

• Type: MDA series cartridge fuse
• Dimensions: Standard 1-1/4″ x 1/4″ (5x20mm)
• Standards Compliance: UL 248-14 recognized, CSA certified
• Interrupt Rating: 100kA (100,000 Amps)

Trusted by professionals worldwide, the MDA-3/4-R delivers Eaton Bussmann’s signature blend of innovation and safety—ensuring your critical systems operate smoothly under stress.

Always verify compatibility with your specific equipment. Replace with identical ratings only.