Littelfuse NLN080 NLN Series C...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$20.23
Littelfuse NLN080 NLN Series Class H Fast-Acting Fuse, 80A

Littelfuse NLN080 NLN Series Class H Fast-Acting Fuse, 80A

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Model: NLN080

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

$20.23
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Littelfuse NLN080 NLN Series Class H Fast-Acting Fuse, 80A

The Littelfuse NLN080 NLN Series Class H Fast-Acting Fuse delivers dependable, low-cost overcurrent protection for general-purpose feeder and branch circuits. Rated 80A at 250VAC/250VDC with a knife-blade package and a 20,000A@250VDC interrupting rating, this NLN Series fuse is engineered for residential and smaller commercial or industrial applications where available short-circuit currents are less than 50,000 amperes. Its Fast-Acting (F) opening characteristic provides quick response for general-purpose circuits with little or no motor load.

Key Features

  • Ampere Rating: 80A rating suited for feeder and branch circuit protection.
  • Voltage Rating: Dual-rated 250VAC and 250VDC for flexible system compatibility.
  • Fast-Acting Opening: Fast-Acting (F) response characteristic for general-purpose overcurrent protection.
  • Knife-Blade Package: Knife-Blade fuse body designed for standard fuse holders and disconnects.
  • Interrupting Rating: 20,000A@250VDC interrupting rating for reliable fault-clearing capability.
  • Cost-Effective Protection: Low-cost overcurrent protection for circuits where available short-circuit current is less than 50,000 amperes.
  • Broad Application Fit: Suitable for residential and smaller commercial and industrial circuits with little or no motor load, including resistive heating loads.

Certifications & Compliance

  • UL Listed (UL File JDDZ E81895)
  • CSA Certified (CSA 1421-01-029862 and CSA 1422-02-029862)

Technical Specifications

  • VAC (V): 250
  • VDC (V): 250
  • Ampere Rating (A): 80

Typical Applications

  • General-Purpose Feeder Circuit Protection
  • Branch Circuit Protection in Commercial and Industrial Facilities
  • Residential and Smaller Commercial Electrical Systems
  • Resistive Heating Load Circuits
  • Circuits with Little or No Motor Load

Why Littelfuse?

Littelfuse NLN Series fuses combine UL Listed and CSA Certified construction with a knife-blade package and proven Class H fast-acting performance, giving electrical professionals a reliable, code-compliant overcurrent protection option. With an 80A/250V rating and 20,000A@250VDC interrupting capability, the NLN080 is built to deliver consistent, code-compliant protection for general-purpose feeder and branch circuit applications.

Product Specs

Product Type:
Fast-Acting Fuse
Series:
NLN
Voltage Rating:
250V
Amperage Rating:
80A
Configuration:
Knife-Blade
Listing:
cULus
Department:
Electrical
Product Group:
Circuit Protection
Product Subgroup:
Fuses

Littelfuse NLN080 – Frequently Asked Questions

1) Will a Littelfuse NLN080 fuse work in a 480V panel?
No. The NLN080 is rated 250VAC and 250VDC only, so it must not go into a 480V circuit. Keep it on 240V-class feeder and branch circuits; for higher system voltage you need a 600V-rated fuse instead.
2) Does the NLN080 have blade terminals or ferrule ends?
Knife-blade. At 80A the NLN is built as a knife-blade body for standard Class H fuse holders and disconnect switches. Ferrule-style holders will not take it, so confirm your disconnect is blade-clip style. Class H blade dimensions are not interchangeable with Class R rejection-style clips in reverse: an R fuse fits an H clip, but an H fuse will not seat in a rejection holder.
3) The NLN080 keeps opening on motor inrush. What fuse handles the starting current?
That is expected behavior: the NLN080 has a Fast-Acting (F) opening characteristic and is intended for general-purpose circuits with little or no motor load, such as resistive heating. For a circuit with motor starting current, use a time-delay fuse such as the Mersen A2D-R, a Class RK1 time-delay fuse with SmartSpot indication, which rides through inrush rather than clearing on it. The A2D-R is an R-class rejection body, so confirm the fuse holder accepts it.
4) If the available short-circuit current at the panel is higher than a Class H fuse can handle, what fast-acting 250V fuse should be used instead?
The Littelfuse NLN080 is a Class H fast-acting fuse rated 250V with a 20,000A interrupting rating, intended for circuits where available short-circuit current stays below 50,000 amperes. Where the fault current at the panel is higher, move to a current-limiting Class RK1 fuse such as the Mersen Amp-Trap A2K series, which is also a fast-acting 250V fuse. Note that Class RK1 bodies use rejection features, so the holder or disconnect must accept an R-class fuse.
5) Is the Littelfuse NLN080 UL Listed and CSA approved for inspection?
Yes. The NLN080 is UL Listed under file JDDZ E81895 and CSA Certified (CSA 1421-01-029862 and 1422-02-029862), carrying a cULus listing. That covers both US and Canadian jurisdictions for a Class H renewable-class general-purpose fuse.
6) What part number do I order for an 80A Littelfuse NLN fuse?
NLN080 is the Littelfuse part number for the 80 amp NLN Series Class H fuse. The NLN series number carries the amp rating in the suffix, so an 80A requirement is NLN080 at 250V.
7) Is the NLN080 suitable for resistive heating circuits in an apartment building?
That is one of its intended uses. Fast-acting Class H protection fits electric heat, feeder, and branch circuits in residential and smaller commercial or industrial systems, where loads are resistive and there is little or no motor inrush. Keep the circuit at 250V or less and verify available fault current is below 50,000 amperes.
8) Can a Mersen D0R0 E-rated fuse be used in place of an NLN080?
No. The Mersen A055F1D0R0-150E is an Amp-Trap E-rated medium voltage fuse with a ferrule terminal, used for transformer and medium voltage circuit protection. The Littelfuse NLN080 is a 250V low-voltage Class H fuse with a knife-blade body for feeder and branch circuits. The two serve different voltage classes and different terminations and are not interchangeable.
9) Is the Mersen A2K12R a direct replacement for a Littelfuse NLN080?
No. Both are fast-acting fuses, but the A2K12R is a Mersen A6K-R series Class RK1 fuse, while the NLN080 is a Class H fuse rated 80A. Class differs, and the ampere ratings differ, so it is not an interchange. A Class RK1 fuse will also not drop into a holder sized only for a non-rejection Class H knife-blade fuse.
10) What is the difference between the NLN080 and a Square D PowerLogic meter fuse pack?
They protect different things. The Square D EMFP3 is a set of three 0.5A 600V fuses for a PowerLogic energy meter's voltage sensing leads. The Littelfuse NLN080 is an 80A, 250V knife-blade Class H fuse for feeder and branch circuit protection. A metering fuse pack is not a substitute for a branch circuit fuse, and vice versa.
How fast can I get the Littelfuse NLN080 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 Littelfuse NLN080 come with a warranty?
Absolutely. The Littelfuse NLN080 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 Littelfuse NLN080?
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 Littelfuse NLN080 from ZenSupply?
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