Bussmann LKN-B Eaton Series Cl...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$61.78
Bussmann LKN-B Eaton Series Class H/K5 Super Lag Fuse Link, 250V

Bussmann LKN-B Eaton Series Class H/K5 Super Lag Fuse Link, 250V

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Model: LKN-80B

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

$61.78
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Bussmann LKN-80B Class H K5 Super Lag Fuse Link, 250V, 80A

The Bussmann LKN-80B is an Eaton Bussmann series LKN fuse link rated 250V and 80A, built to Class H and Class K5 specifications for industrial and commercial electrical systems. This Super Lag, time-lag fuse link uses a non current-limiting, renewable design, allowing the fusible element to be replaced in the field rather than discarding the entire fuse body. RoHS-compliant construction supports dependable, code-compliant overcurrent protection wherever Class H/K5 renewable fuse links are specified.

Key Features

  • Electrical Rating: Rated 250V and 80A for reliable overcurrent protection in industrial and commercial circuits.
  • Class H/K5 Fuse Link: Manufactured to Class H and Class K5 specifications for dependable, code-compliant circuit protection.
  • Super Lag, Time-Lag Performance: Super Lag, time-lag design rides through temporary overloads such as motor starting current without nuisance opening.
  • Non Current-Limiting, Renewable Construction: Renewable fuse-link design lets the fusible element be replaced instead of discarding the entire fuse body.
  • Non-Indicating Design: Standard non-indicating construction for straightforward use in compatible renewable fuse holders.
  • LKN Series: Part of the Eaton Bussmann LKN series of fuse links.
  • Application: Suited for industrial and commercial structures requiring dependable overcurrent protection.

Certifications & Compliance

  • RoHS Compliant

Technical Specifications

  • Amperage Rating: 80 A
  • Application: Industrial and commercial structures
  • Class: Class K5
  • Compliances: RoHS Compliant
  • Fuse Indicator: Non-indicating
  • Product Height: .001 in
  • Product Length Depth: .001 in
  • Product Weight: .16 lb
  • Product Width: .001 in
  • Special Features: Super Lag, Time Lag
  • Voltage Rating: 250 V
  • Product Type: Non Current-limiting, renewable
  • Product Details: Non Current-limiting, renewable

Typical Applications

  • Industrial Electrical Installations
  • Commercial Building Circuit Protection
  • Motor Starting and Overcurrent Protection Circuits
  • Panelboard and Switchboard Fuse Replacement
  • Renewable Fuse Holder Systems

Why Bussmann?

Eaton's Bussmann LKN series fuse link is built to Class H and Class K5 specifications, delivering renewable, non current-limiting overcurrent protection rated 250V and 80A. The RoHS-compliant construction and Super Lag, time-lag performance make it a dependable choice for industrial and commercial electrical systems where code-compliant circuit protection is required.

Manufacturer Resources

Product Specs

Special Features:
Super Lag, Time Lag
Department:
Electrical
Compliances:
RoHS Compliant
Application:
Industrial and commercial structures
Product Group:
Circuit Protection
Product Details:
Non Current-limiting, renewable
Product Type:
Fuse Link
Product Subgroup:
Fuses
Voltage Rating:
250V

Bussmann LKN-80B – Frequently Asked Questions

1) What is a Bussmann LKN fuse link and is it the same thing as a complete fuse?
The Bussmann LKN-B is a renewable fuse LINK, not a complete fuse cartridge. It is the replaceable fusible element that drops into a renewable Class H/K5 fuse body, so when the link blows you swap the element and keep the body instead of discarding the whole fuse. If your switch or panel uses one-time (non-renewable) cartridge fuses, a link on its own will not work.
2) What amp ratings does the Bussmann LKN-B series come in?
Three ratings: 80A (LKN-80B), 125A (LKN-125B) and 500A (LKN-500B). All are 250V rated, so they suit 250V or lower systems only. Do not put them in a 600V switch.
3) Will a time-lag LKN fuse link hold on motor inrush without nuisance blowing?
Yes. The LKN is a Super Lag, time-lag link, built to ride through temporary overloads such as motor starting current rather than opening on inrush. That makes it a fit for motor circuits and other loads with a high starting surge.
4) Is the LKN-B a current-limiting fuse? My drawing calls for current-limiting protection.
No. The LKN-B is non current-limiting. If the spec or the equipment short-circuit current rating depends on a current-limiting fuse, a Class H/K5 renewable link will not satisfy it. Class H/K5 renewable links are for circuits where non current-limiting overcurrent protection is acceptable.
5) Where do renewable LKN fuse links actually get used?
Industrial and commercial installations: panelboard and switchboard fuse replacement, motor starting and overcurrent circuits, and existing renewable fuse holder systems. The usual reason to buy them is maintenance of older fused gear that was originally fitted with Class H/K5 renewable fuses, where restocking elements is cheaper and faster than replacing the switch.
6) Is the 80A LKN-80B interchangeable with the 125A or 500A version in the same holder?
No. Amp rating has to match the circuit and the fuse body size class, and 80A, 125A and 500A links are different sizes. Order the rating that matches what was in the holder, LKN-80B, LKN-125B or LKN-500B, and never up-rate a link to stop it blowing.
7) Can I tell at a glance whether an LKN link has blown?
No. It is a non-indicating design, with no pop-out or visual blown indicator. Troubleshooting means pulling the fuse and testing continuity, so for maintenance crews working live panels plan on a meter rather than a visual check.
8) Are these Bussmann LKN links RoHS compliant for an institutional spec?
Yes, LKN series links are RoHS compliant. That is the compliance statement carried on the series across all three amp ratings.
How fast can I get the Bussmann LKN-80B 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 LKN-80B come with a warranty?
Absolutely. The Bussmann LKN-80B 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 LKN-80B?
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 LKN-80B from ZenSupply?
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