Bussmann FMX Maxi Time-Delay F...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$18.20
Bussmann FMX Maxi Time-Delay Fuse, Non-Indicating, 10 kAIC

Bussmann FMX Maxi Time-Delay Fuse, Non-Indicating, 10 kAIC

(No reviews yet) Write a Review

Model: FMX-30

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

$18.20
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Bussmann FMX Maxi Time-Delay Fuse, Non-Indicating, 10 kAIC

The Bussmann FMX Maxi Time-Delay Fuse delivers dependable overcurrent protection for demanding branch-circuit and equipment applications. Built as a non-indicating, time-delay fuse with a 10 kAIC interrupt rating, the FMX rides through momentary inrush and surge currents while still responding quickly to sustained overloads and short circuits. This Maxi-style fuse is available in 30A and 50A ratings, giving electrical professionals the flexibility to match protection to the specific circuit at hand without changing the fuse holder or footprint. As part of Bussmann's Time Delay Fuses lineup, the FMX is engineered for reliable, code-compliant performance in commercial, industrial, and light-duty electrical systems where dependable overcurrent protection is essential.

Key Features

  • Amp Rating Range: Available in 30A and 50A ratings, allowing installers to select the correct protection level for a given circuit or piece of equipment.
  • Time-Delay Design: Time-delay (slow-blow) construction rides through momentary inrush and surge currents without nuisance opening, reducing unnecessary fuse replacement.
  • Interrupt Rating: 10 kAIC interrupt rating delivers dependable protection against short-circuit currents, helping safeguard connected equipment and wiring.
  • Non-Indicating: Non-indicating fuse body design for standard Maxi fuse applications that do not require a blown-fuse indicator window.
  • Maxi Fuse Format: Maxi-style fuse footprint for compatibility with standard Maxi fuse holders, blocks, and disconnects already in the field.
  • Standard Packaging: Packaged in the manufacturer's standard packaging type, suitable for individual replacement or maintaining stock on hand.

Technical Specifications

  • Packaging Type: Standard
  • Fuse Indicator: Non-indicating

Typical Applications

  • Branch Circuit Overcurrent Protection
  • Motor and Equipment Circuits Subject to Inrush Current
  • Commercial and Industrial Electrical Panels
  • Fuse Block and Holder Replacement Applications
  • Maintenance and MRO Electrical Stock

Why Bussmann?

Bussmann time-delay fuses are engineered for dependable overcurrent protection in demanding electrical applications. The FMX's 10 kAIC interrupt rating and time-delay construction work together to protect circuits from both sustained overloads and momentary surges, supporting safe, reliable installations across commercial and industrial facilities. With both 30A and 50A ratings available in the FMX line, electricians and maintenance teams can standardize on a single trusted Maxi fuse family for a wider range of circuit protection needs. Choose Bussmann for consistent, code-compliant fuse performance backed by a name electrical professionals have relied on for generations.

Manufacturer Resources

Product Specs

Packaging Type:
Standard
Department:
Electrical
Product Group:
Fuses
Product Details:
Time delay
Fuse Indicator:
Non-indicating
Product Type:
Time Delay Fuse
Product Subgroup:
Time Delay Fuses
Interrupt Rating:
10 kAIC
Amperage Rating:
30A - 50A

Bussmann FMX-30 – Frequently Asked Questions

1) What amp ratings does the Bussmann FMX Maxi fuse come in?
Four amp ratings are orderable in the FMX Maxi family: 25A (FMX-25LP), 30A (FMX-30), 50A (FMX-50), and 60A (FMX-60LP). All four share the Maxi footprint, so you can move up or down the range without changing the holder or block.
2) Will a Bussmann FMX fuse drop into my existing Maxi fuse block?
Yes. The FMX is a Maxi-format blade fuse, so it fits standard Maxi fuse holders, blocks, and disconnects already in the field. No adapter or re-prep is needed as long as the holder is genuinely Maxi and not an ATO/ATC or Mini size.
3) Is the FMX a slow-blow fuse that will hold on motor inrush?
It is. The FMX is built as a time-delay (slow-blow) fuse, so it rides through momentary inrush and surge on motor and equipment circuits without nuisance opening, while still clearing sustained overloads and shorts. If your circuit is purely resistive and you want the fastest clearing possible, a fast-acting fuse is the better match.
4) What is the interrupting rating on the Bussmann FMX Maxi fuse?
10 kAIC. That is the short-circuit current the FMX can safely interrupt, and it is the number to check against the available fault current at the point of protection before you specify it for a panel or equipment circuit.
5) Does the FMX fuse have a blown-fuse indicator window?
No. The FMX is a non-indicating fuse, so there is no lamp or window to show it has opened. Troubleshooting means pulling the fuse and testing continuity. If your maintenance crew wants visual blown-fuse identification, you need an indicating Maxi fuse instead.
6) Which FMX amp rating should I stock for MRO on mixed panels?
For general maintenance stock, carrying the 30A (FMX-30) and 50A (FMX-50) covers the two most common branch-circuit sizes in the line, with 25A (FMX-25LP) and 60A (FMX-60LP) filling the ends of the range. Because all four are Maxi format, one holder standard covers the whole shelf.
7) How is the Bussmann FMX packaged, single fuse or bulk?
The FMX ships in the manufacturer's standard packaging, which suits both one-off replacement and building up shop stock.
How fast can I get the Bussmann FMX-30 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 FMX-30 come with a warranty?
Absolutely. The Bussmann FMX-30 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 FMX-30?
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 FMX-30 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!