Bussmann MDL Series Time-Delay...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,693.19
Bussmann MDL Series Time-Delay Miniature Fuse, Pack of 100

Bussmann MDL Series Time-Delay Miniature Fuse, Pack of 100

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Model: MDL-25

In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,693.19
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Bussmann MDL Series Time-Delay Miniature Fuse, Pack of 100

The Bussmann MDL Series is a line of time-delay miniature fuses offered as part of the Eaton Bussmann series, a widely used family of circuit protection products for electrical and electronic equipment. This listing covers the MDL Series miniature fuse family, available in ratings from MDL-20 through MDL-25, giving you the flexibility to select the exact time-delay fuse your equipment specifies. Time-delay, or slow-blow, fuses like the MDL Series are engineered to tolerate the brief current surges that occur at equipment start-up without opening the circuit unnecessarily, while still responding reliably to sustained overload or fault currents to help protect downstream wiring and components. Each fuse in the MDL Series shares a ferrule end type and connection style, a compact 0.25 inch by 0.25 inch miniature fuse body, and a 1 kiloamp interrupt rating, making the family well suited for control panels, electronic assemblies, and equipment where board space is limited. Fuses in this listing are supplied in convenient packs of 100 for maintenance stock, OEM production runs, and repair applications. Sourced through the Eaton Bussmann series, the MDL Series is a straightforward, code-recognized replacement option for maintenance, repair, and OEM production applications where a properly rated time-delay miniature fuse is required.

Key Features

  • Available Ratings: MDL Series miniature fuses are available from MDL-20 through MDL-25, allowing selection of the correctly rated fuse for the application.
  • Time-Delay Operation: Slow-blow characteristic allows each fuse in the family to withstand brief current surges at start-up without nuisance opening, while still opening reliably under sustained overload conditions.
  • Miniature Fuse Form Factor: Compact 0.25 inch diameter by 0.25 inch body construction suited for control panels, electronic assemblies, and equipment where mounting space is limited.
  • Ferrule End Type: Ferrule connection ends across the family simplify installation into standard miniature fuse holders and clips.
  • 1 Kiloamp Interrupt Rating: Shared interrupt rating across the MDL Series helps ensure safe fuse operation under fault conditions.
  • Eaton Bussmann Series: Manufactured as part of the Eaton Bussmann series, aligning this fuse family with a widely recognized line of circuit protection products used across commercial, industrial, and OEM applications.
  • Pack of 100: Supplied in packs of 100 for convenient maintenance stocking, OEM production, and repair use.
  • Reliable Overcurrent Protection: Designed to open the circuit when current exceeds safe levels, helping protect downstream wiring, components, and connected equipment from damage.

Technical Specifications

  • Series: MDL
  • Connection Type: Ferrule
  • End Type: Ferrule
  • Product Width: .25 inches
  • Product Height: 0.25 inches
  • Interrupt Rating: 1 kiloamp
  • Pack size (unit): 100

Typical Applications

  • Overcurrent Protection for Electrical and Electronic Equipment
  • Control Panel and Circuit Board Fuse Protection
  • Time-Delay Protection for Motor and Transformer Inrush Current
  • Industrial and Commercial Equipment Circuit Protection
  • OEM Production Fuse Protection
  • Replacement Fuse for Field Maintenance and Repair

Why Bussmann?

Bussmann, part of the Eaton Bussmann series of circuit protection products, is a name electrical professionals rely on for consistent fuse performance across the MDL Series lineup. Shared specifications like the ferrule end type, 1 kiloamp interrupt rating, and compact miniature body across MDL-20 through MDL-25 reflect a commitment to dependable, clearly marked, easy-to-source circuit protection for electrical and electronic systems, making the MDL Series a practical choice for maintenance, repair, and OEM applications supplied in convenient packs of 100.

Manufacturer Resources

Spec Sheet

Product Specs

Product Type:
Time-Delay Fuse
Series:
MDL
Department:
Electrical
Product Subgroup:
Fuses
list_batch:
BUSS-20260919
Connection Type:
Ferrule
Product Width:
.25 inches
Interrupt Rating:
1 kiloamp
Product Height:
0.25 inches
End Type:
Ferrule
Pack size (unit):
100
Product Group:
Circuit Protection
Product Length:
1.25 in

Bussmann MDL-25 – Frequently Asked Questions

1) What amp ratings does the Bussmann MDL time-delay fuse come in?
Two amperages are offered in the MDL Series here: 20 amp (MDL-20) and 25 amp (MDL-25). Both are time-delay (slow-blow) miniature fuses with ferrule ends and the same 1 kiloamp interrupt rating, so the only decision is matching the amperage the equipment nameplate or schematic calls for. Never substitute a higher amperage to stop a fuse from blowing; size it to what the circuit specifies.
2) Will an MDL fuse fit a standard 1/4 inch fuse clip or holder?
Yes. The MDL body measures 0.25 inches by 0.25 inches with ferrule connection ends, which is the common miniature fuse form that drops into standard quarter-inch-diameter fuse clips and panel holders. No crimping or soldering is involved, the ferrules just seat in the clips.
3) Is a 1 kA interrupt rating enough for my control panel?
The MDL Series is rated to safely interrupt 1 kiloamp of fault current. That suits secondary control circuits, electronic assemblies, and panel branches where the available fault current at the fuse is below 1 kA. If your panel's available short-circuit current at that point exceeds 1 kA, you need a higher interrupting-rating fuse class, not an MDL.
4) Why use a time-delay fuse instead of a fast-acting one on a motor or transformer circuit?
Motors and transformers draw a large inrush current for a fraction of a second at start-up. A fast-acting fuse sees that surge as a fault and opens, which is the classic nuisance blow. The MDL Series is time-delay, so it rides through that brief start-up surge while still opening on a sustained overload or fault. For purely resistive or electronic loads with no inrush, a fast-acting fuse is the better protection choice because it clears faster.
5) How many fuses come in a pack of Bussmann MDL-20 or MDL-25?
Each pack is 100 fuses of a single amperage. That quantity is aimed at MRO crib stock, OEM production runs, and repeat field repairs. If you keep both 20A and 25A circuits in a building or a product line, order a pack of each; a pack is not a mixed assortment.
6) Can I use an MDL fuse to replace a blown fuse of the same amperage in existing equipment?
Match three things, not just the amps: amperage (20A or 25A here), the time-delay characteristic, and a voltage rating at or above the circuit. The MDL is a ferrule-end miniature fuse with a 1 kA interrupt rating, so it is a direct drop-in for an equivalent time-delay miniature fuse in the same clips. Swapping a slow-blow in where a fast-acting fuse was specified changes the protection the designer intended, so check the equipment's parts list before substituting.
7) Where is the full technical data for the Bussmann MDL Series published?
Eaton publishes a spec sheet for the MDL Series, and the datasheet link is carried with the product record. Use it when you need the published time-current curve or voltage rating detail for a submittal or a design review on 20A and 25A circuits.
How fast can I get the Bussmann MDL-25 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Bussmann MDL-25 come with a warranty?
Absolutely. The Bussmann MDL-25 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Bussmann MDL-25?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Bussmann MDL-25 from ZenSupply?
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