Skip to content
Shop Your Local Store ● Ship to Your Hometown Store
Pro & Contractor Accounts ● Apply for Net Terms
100,000+ Products ● Trusted Authentic Brands

Bussmann 100 amps Time Delay Fuse

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

Rides out motor startup surges instead of blowing, then trips fast if a real overload hits. 100A/250V, UL listed.
Bussmann MPN FRN-R-100 In Stock & Ready to Ship
$199.95
$39.99 each · sold by the case of 5 Free shipping on orders over $75
Ships within 24 hours · most orders arrive in about 2 business days
Cases of 5 · Order in multiples of 5

Sold by the Case

$199.95 per case of 5

Save $30.00 on orders $75+. Spend $75 or more to unlock 15% off every case — applied automatically at checkout. Free shipping at $75.

Ships as a complete case of 5. Free shipping on orders $75 and up.

About Product Overview

This Bussmann FRN-R-100 is a time delay fuse built for circuits with motors, compressors, and other loads that draw a heavy inrush current on startup. The time delay design rides out that initial surge instead of blowing, while still cutting power fast if a true overload or short develops. Rated 100A at 250V with a fiberglass tube body and ferrule endcaps, it's UL listed and made in the USA for dependable performance in panels, disconnects, and equipment that need this exact class of protection.

  • Amperage: 100A
  • Voltage: 250V
  • Application: Time delay (motor/inrush loads)
  • Tube construction: Fiberglass
  • Endcap construction: Ferrule
  • UL Listed, made in USA

The Details Specifications

Brand Bussmann
Model / MPN FRN-R-100
UPC 051712101851
Weight 2 lbs
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
Price check

Go ahead. Check.

You're going to price-check us against Amazon, Home Depot, and Lowe's. Everybody does. Good — open all three tabs. We'll wait. Then look hard at what you're actually being handed over there.

On Amazon, start with these four questions before you click buy.

01

Who's actually selling it

The brand name is on the listing. A different company is in the seller field. Those aren't the same thing, and the second one is who you're buying from.

02

Whether the warranty survives

Most manufacturers only honor a warranty when the unit came through an authorized dealer. We're authorized for Bussmann. A third-party marketplace seller usually isn't.

03

Where the box came from

Gray-market stock, returns repackaged as new, and outright fakes move through marketplaces constantly. It all looks identical in the photo. It stops looking identical when it fails.

04

Who you call when it breaks

Ours is a phone number with a person behind it who has held this product. M–F, 6 AM – 5 PM Pacific. (866) 469-8556

The big boxes don't care if your hardware store survives.

Amazon, Home Depot, and Lowe's are built to pull every hardware dollar out of your town. When the local shop can't keep the lights on, the counter where somebody actually knew which part you needed goes with it. We're built the other way: real brands so you're never stuck on a marketplace, and a straight answer to buy it down the street when that's the better call. Support independent hardware — it doesn't restock itself.

Why we tell you to shop local
Authorized dealer · Bussmann

Or skip the tabs entirely and buy it down the street. Find a store near you →

Shop Local · Support Independent

Every order helps keep your local hardware store on the corner.

Why we built NHG
You might find it for less locally. Independent retailers often offer competitive pricing — some products are even cheaper in-store than online.
Real expert advice — not search results. Independent hardware staff know their inventory and the local conditions you're working in.
Keep the neighborhood working. Every dollar spent at an independent retailer returns roughly 3x more to your local economy than at a national chain.

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare