Bussmann MDA-4-R Time Delay Fuse

SKU: 7E75FF12

$3.87

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Description

Bussmann MDA-4-R Time Delay Fuse

Superior Circuit Protection for Demanding Applications

The Bussmann MDA-4-R is a premium time-delay (slow-blow) fuse engineered to provide reliable protection for circuits experiencing temporary inrush currents or startup surges. Designed for 250V AC/DC systems, this 4-amp cartridge fuse combines robust performance with critical safety features to safeguard motors, transformers, and inductive loads.

Key Features

  • Time-Delay Design: Withstands initial current surges (5x rated current for 10 seconds) before interrupting sustained overloads or short circuits
  • Rejection Base (R-Type): Prevents installation of incorrect fuse ratings with patented slot configuration
  • High Interrupt Rating: 10kA AC/DC breaking capacity ensures safety during extreme fault conditions
  • Durable Construction: Ceramic body with sand-filled arc quenching for consistent performance
  • UV-Resistant Labeling: Clear permanent identification of 4A/250V rating
  • Space-Saving: 1/4″ x 1-1/4″ (6.3 x 32mm) dimensions for compact panels

Technical Specifications

Attribute Specification
Current Rating 4 Amps
Voltage Rating 250V AC/DC
Time Delay 10 sec @ 20A
Interrupt Rating 10,000 AIC
Dimensions 1/4″ x 1-1/4″ (Class G)
Standards UL 248-14, CSA C22.2

Ideal Applications

  • Motor control circuits (HVAC compressors, pumps, fans)
  • Transformer primaries
  • Power supplies and converters
  • Lighting ballasts
  • Industrial control panels
  • Appliance protection circuits

Why Choose MDA-4-R?

Bussmann’s precision-engineered design provides crucial “motor start” tolerance while maintaining UL/CSA compliance. The rejection feature prevents accidental substitution with non-time-delay fuses, ensuring optimal equipment protection and reducing maintenance costs. Backed by Eaton’s global support network.

Installation Note: Always verify voltage/current requirements and consult NEC guidelines before installation. Replace with identical rating only.

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Shipping and Returns
Returns are easy You may return items within 30 days of delivery for a refund. View our return policy FREE Shipping on orders over $49. Eaton Bussmann Fuse Relay Online Sales Store offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s). Same Day Shipping We strive to ship out your items within one business day. In rare circumstances, Eaton Bussmann Fuse Relay Online Sales Store may reserve up to 5 business days to complete shipment. Feel free to contact us if your order is time sensitive.
1-Year Warranty
Eaton Bussmann's fuses and relays for sale are brand new and come with a 1-year comprehensive warranty. Rest assured, all products are authentic OEM (original equipment manufacturer).