Bussmann MDL Series Time-Delay...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$4.26

Bussmann MDL Series Time-Delay Fuse, Ferrule End

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Model: MDL-8-R

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

$4.26
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Bussmann MDL Series Time-Delay Fuse, Ferrule End

The Bussmann MDL Series time-delay fuse, part of the Eaton Bussmann fuse lineup, is built to deliver dependable overcurrent protection for electrical circuits and equipment. This family is available in amp ratings from MDL-7-R through MDL-15-R, including MDL-7-R, MDL-8-R, MDL-10-R, and MDL-15-R, giving electricians and panel builders a common time-delay design across several current ratings. Every fuse in the MDL series shares a ferrule-style connection and end configuration, and is engineered to ride through momentary current surges, such as motor starting inrush or transformer energization, without opening unnecessarily, while still responding quickly to sustained overload or short-circuit conditions. This characteristic makes MDL series time-delay fuses well suited to circuits that experience brief spikes in current draw during normal operation. As part of the Eaton Bussmann fuse portfolio, the MDL series is intended for use across commercial, industrial, and general-purpose electrical systems where reliable, code-compliant circuit protection is required. When specifying or replacing a fuse, matching the exact MDL model and amp rating helps ensure the protection device performs as intended for the circuit it serves. Electrical contractors, facility maintenance teams, and panel installers rely on recognized fuse series such as MDL to keep protected circuits running safely.

Key Features

  • Time-Delay Operation: Designed to tolerate momentary current surges, such as motor inrush or equipment start-up spikes, without nuisance opening, while still responding to sustained overload conditions.
  • MDL Series Range: Available across amp ratings from MDL-7-R to MDL-15-R (MDL-7-R, MDL-8-R, MDL-10-R, MDL-15-R), a recognized Eaton Bussmann time-delay fuse family used across a wide range of electrical protection applications.
  • Ferrule Connection: Ferrule-style end connection shared across the MDL series for consistent fit in compatible fuse holders and disconnects.
  • Eaton Bussmann Manufacturing: Produced under the Eaton Bussmann brand, a long-established name in overcurrent protection and circuit fusing components.
  • Straightforward Replacement: The MDL model designation and amp rating allow electricians and maintenance personnel to identify and source an exact-match replacement fuse for existing MDL series installations.
  • Panel and Equipment Protection: Suited for use in fuse holders, disconnects, and panelboards specified for MDL series time-delay fuses.
  • Recognized Fuse Series: The MDL series is part of the broader Eaton Bussmann fuse portfolio commonly specified in commercial and industrial electrical distribution equipment.

Technical Specifications

  • Series: MDL
  • Connection Type: Ferrule
  • End Type: Ferrule
  • Product Width: .25 inches
  • Available models: MDL-7-R, MDL-8-R, MDL-10-R, MDL-15-R

Typical Applications

  • Motor Circuit Overcurrent Protection
  • HVAC and Equipment Branch Circuits
  • Industrial Control Panels
  • General-Purpose Electrical Branch Circuits
  • Fuse Replacement and Panel Maintenance
  • Commercial and Industrial Electrical Installations

Why Bussmann?

Eaton's Bussmann series has long been a trusted choice for circuit protection, and the MDL series time-delay fuse family carries that reputation for dependable performance across its full range of amp ratings. Choosing a Bussmann MDL series fuse means specifying a component built for consistent, code-compliant overcurrent protection in professional electrical installations. When replacing an existing fuse, matching the exact MDL model number and amp rating helps ensure the replacement fuse performs as originally specified for the circuit it protects, supporting safe and reliable operation of the equipment it safeguards.

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Manufacturer Resources

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
End Type:
Ferrule
Product Group:
Circuit Protection

Bussmann MDL-8-R – Frequently Asked Questions

1) What amp ratings does the Bussmann MDL time-delay fuse come in?
The MDL series time-delay fuse is offered in 7A, 8A, 10A and 15A, ordered as MDL-7-R, MDL-8-R, MDL-10-R and MDL-15-R. When you're replacing a blown fuse, match the amp rating to the one coming out rather than sizing up, since the rating is what the circuit was designed around.
2) Will an MDL fuse fit a 1/4 inch fuse holder or clip?
The MDL fuse body measures .25 inches in width, so it seats in holders and clips built for a quarter-inch diameter ferrule fuse. Both ends are ferrule type, meaning metal end caps that drop into spring clips or a screw-in holder cap, not blade or bolt-down terminals.
3) Can I substitute a 15A MDL for a 10A MDL if that's what I have on the shelf?
No. Fitting MDL-15-R where MDL-10-R was specified raises the let-through current above what the conductors and equipment were protected for. The fuse ampere rating has to match the original device; the MDL body and ferrule ends are the same across 7A, 8A, 10A and 15A, so they will physically interchange, which is exactly why the mistake is easy to make. Order the matching rating.
4) Why use a time-delay fuse instead of a fast-acting fuse on a motor circuit?
A motor pulls several times its running current for a fraction of a second at start-up, and a fast-acting fuse will often open on that inrush even though nothing is wrong. The MDL time-delay design rides through those momentary surges, such as motor starting inrush or transformer energization, while still opening on a sustained overload or short circuit. For a resistive load with no inrush, a fast-acting fuse is the better choice because it clears faults quicker.
5) Is the MDL series suitable for an industrial control panel or HVAC branch circuit?
Yes. MDL time-delay fuses are used in industrial control panels, HVAC and equipment branch circuits, motor circuit protection, and general-purpose branch circuits, installed in fuse holders, disconnects and panelboards specified for the series. For an MRO stock program, holding 7, 8, 10 and 15 amp together covers the common small-load ratings in the family.
6) What does the -R suffix on a Bussmann MDL fuse part number mean for ordering?
All four MDL ratings here carry the -R suffix: MDL-7-R, MDL-8-R, MDL-10-R, MDL-15-R. It is part of the catalog designation you order by, so quote the full number including the suffix when you spec or reorder. The amp value sits between the series letters and the suffix, so MDL-8-R is the 8 amp fuse.
7) Who makes Bussmann MDL fuses?
MDL is an Eaton Bussmann series, part of the Bussmann overcurrent protection portfolio. If a drawing or an existing panel label calls out MDL, this is the family it refers to.
How fast can I get the Bussmann MDL-8-R 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-8-R come with a warranty?
Absolutely. The Bussmann MDL-8-R 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-8-R?
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
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