Bussmann LPS-RK-3-1/2SP 600V C...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$50.36
Bussmann LPS-RK-3-1/2SP 600V Class RK1 Time-Delay Fuse

Bussmann LPS-RK-3-1/2SP 600V Class RK1 Time-Delay Fuse

(No reviews yet) Write a Review

Model: FRN-R-2-8/10

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

$50.36
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 FRN-R-2-8/10 Fusetron Class RK5 Time-Delay Fuse, 250V

The Bussmann FRN-R-2-8/10 is a Fusetron dual-element, time-delay fuse engineered for reliable overcurrent protection in 250V circuits. Classified as a Class RK5 fuse, this FRN-R series device combines dual-element time-delay construction with a compact, rejection-style body designed to protect motors, transformers, and other inductive loads from damaging overloads and short circuits. Its 250V rating and RK5 classification make it a dependable choice for commercial, industrial, and general-purpose electrical panels where dependable branch-circuit and motor-circuit protection is required, helping installers and maintenance electricians standardize on a single, well-known fuse family for demanding applications.

Key Features

  • Amperage Rating: Rated 2-8/10A, sized to match the specific overcurrent protection needs of the connected circuit.
  • Voltage Rating: Rated for use on 250V circuits, suitable for common commercial and industrial voltage systems.
  • Class RK5 Fuse: Meets Class RK5 dimensional and performance specifications, compatible with rejection-style fuse holders and blocks.
  • Dual-Element Time-Delay Design: Fusetron construction provides time-delay operation that rides through momentary inrush and overload conditions without nuisance opening.
  • FRN-R Series: Part of the Bussmann Fusetron FRN-R family of rejection-base fuses engineered for motor and branch-circuit protection.
  • Reliable Overcurrent Protection: Designed to open under sustained overload or short-circuit conditions, helping safeguard downstream equipment and wiring.
  • Compact Form Factor: Standard ferrule-style body allows straightforward installation into compatible fuse holders and disconnect switches.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Motor Branch-Circuit Protection
  • Commercial and Industrial Electrical Panels
  • HVAC and Mechanical Equipment Circuits
  • General-Purpose Overcurrent Protection
  • Renovation and New Construction Electrical Systems

Why Bussmann?

Bussmann is a trusted name in circuit protection, and the FRN-R-2-8/10 Fusetron fuse reflects that reputation with dual-element time-delay construction and Class RK5 performance built for demanding electrical environments. Choosing a Bussmann FRN-R series fuse means specifying a device engineered to the RK5 standard for consistent, code-compliant overcurrent protection in motor and branch circuits. For professionals who need dependable circuit protection, Bussmann fuses deliver the performance electrical systems depend on.

Manufacturer Resources

Product Specs

Department:
Electrical
list_batch:
BUSS-20260919
Product Subgroup:
Fuses
Product Type:
Time-Delay Fuse
Product Group:
Circuit Protection

Bussmann FRN-R-2-8/10 – Frequently Asked Questions

1) What is the difference between the Bussmann FRN-R-2-8/10 and LPS-RK-3-1/2SP fuses?
They are two different voltage classes of Bussmann Class R fuse. FRN-R-2-8/10 is the 250V option; LPS-RK-3-1/2SP is the 600V option. Pick by the circuit voltage your disconnect or panel is rated for: a 250V fuse must not be applied on a 600V system, while a 600V fuse may be used on lower-voltage circuits.
2) Will a Bussmann FRN-R fuse fit a rejection-style Class R fuse block?
Yes. The FRN-R-2-8/10 is built to Class RK5 dimensional and performance specifications, so it drops into rejection-style fuse holders and blocks, plus standard ferrule-type holders and fused disconnect switches. The rejection feature is what keeps a lower-interrupting non-Class-R fuse out of the same clips.
3) Will a time-delay Fusetron fuse hold through motor inrush without blowing?
That is what it is for. The FRN-R-2-8/10 uses dual-element time-delay Fusetron construction, which rides through the momentary inrush of a motor start or transformer energization and still opens on a sustained overload or a short circuit. On inductive loads a fast-acting fuse of the same amp rating would nuisance-open on every start.
4) What amp rating is the Bussmann FRN-R-2-8/10 fuse?
2-8/10 amps, which is 2.8A. The fractional amp ratings in the FRN-R line exist so you can size tight to a small motor's full-load current instead of jumping to a 3A or 5A fuse and leaving the load underprotected on overload.
5) Where are Bussmann FRN-R Class RK5 fuses typically used in a building?
Motor branch circuits, HVAC and mechanical equipment circuits, and general commercial or industrial panels, including renovation and new-construction work. For an MRO or maintenance group, standardizing on one Class R family across disconnects simplifies the spare-fuse shelf, since the rejection base keeps the wrong fuse class from being installed later.
How fast can I get the Bussmann FRN-R-2-8/10 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 FRN-R-2-8/10 come with a warranty?
Absolutely. The Bussmann FRN-R-2-8/10 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 FRN-R-2-8/10?
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 FRN-R-2-8/10 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.
!