Bussmann KTN-R-15 Class RK1 Fa...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$98.24
Bussmann KTN-R-15 Class RK1 Fast-Acting Fuse, 15A, 250V

Bussmann KTN-R-15 Class RK1 Fast-Acting Fuse, 15A, 250V

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Model: KTN-R-15

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

$98.24
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Bussmann KTN-R-15 Class RK1 Fast-Acting Fuse, 15A, 250V

The Bussmann KTN-R-15 is a Class RK1 LIMITRON fast-acting fuse manufactured by Eaton Bussmann, engineered to deliver dependable overcurrent protection in panelboard applications. This fuse is rated 15A at 250V, providing fast-acting response for branch circuit and equipment protection where Class RK1 current-limiting performance is required. The KTN-R-15 features ferrule end x ferrule end terminals, allowing for straightforward installation and secure connections within compatible panelboard fuse holders and disconnect switches. Construction includes a melamine glass tube body paired with 70/30 brass end caps, combining mechanical strength with reliable electrical contact. As a non-indicating fuse, the KTN-R-15 does not include a blown-fuse indicator, keeping the design straightforward and cost-effective for standard panelboard circuit protection.

Key Features

  • Amperage Rating: 15A for panelboard branch circuit protection.
  • Voltage Rating: 250V rated for standard panelboard applications.
  • Class RK1 LIMITRON: Fast-acting fuse design from the Eaton Bussmann KTN-R series.
  • Ferrule End x Ferrule End: Dual ferrule terminals for secure panelboard mounting.
  • 70/30 Brass End Caps: Durable brass end caps for reliable electrical contact.
  • Melamine Glass Tube: Rugged tube body construction for consistent fuse performance.
  • Non-Indicating Design: Standard non-indicating fuse body for panelboard use.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Panelboard Overcurrent Protection
  • Commercial and Industrial Electrical Systems
  • Branch Circuit Fuse Protection
  • Renovation and New Construction Panelboards

Why Bussmann?

Bussmann is a globally recognized name in circuit protection, and the Eaton Bussmann KTN-R series reflects that engineering standard with its Class RK1 LIMITRON fast-acting design. The KTN-R-15 combines a melamine glass tube body with 70/30 brass end caps for durable construction and dependable electrical contact under normal operating conditions. Rated 15A at 250V with ferrule end x ferrule end terminals, this non-indicating fuse is built to deliver consistent, code-compliant overcurrent protection for panelboard applications in commercial and industrial facilities. Choosing genuine Bussmann LIMITRON fuses helps ensure compatibility with panelboard fuse holders designed for Class RK1 devices.

Manufacturer Resources

Product Specs

list_batch:
BUSS-20260919
Product Type:
Fast-Acting Fuse
Series:
KTN-R
Voltage Rating:
250V
Amperage Rating:
15A
Connection Type:
Ferrule End x Ferrule End
Product Finish:
Brass
Department:
Electrical
Product Subgroup:
Fuses
Product Material:
Melamine Glass
Product Group:
Circuit Protection
Product Height:
2 in
Product Width:
0.56 in
Product Weight:
0.1 lb
Product Length:
0.56 in

Bussmann KTN-R-15 – Frequently Asked Questions

1) Will a Bussmann KTN-R-15 fuse work in a 480V circuit?
No. The KTN-R-15 is rated 250V, so it belongs in circuits at 250 volts or below. For a 480V or 600V panel you need the 600V Class RK1 equivalent, the Bussmann KTS-R series, in the same amperage.
2) Can I use a KTN-R-15 in a fuse block made for Class RK5 or Class H fuses?
Yes, physically. Class R fuses (RK1 and RK5) share the rejection-ferrule dimensions of Class H fuses of the same amp and voltage rating, so a 15A 250V Class R fuse drops into a standard 250V Class H clip or a Class R rejection block. The reverse is not true: a Class H fuse will not fit a Class R rejection clip. The KTN-R-15 uses ferrule end x ferrule end terminals.
3) What is the difference between the fast-acting KTN-R and a time-delay Class RK1 fuse?
The KTN-R series is a fast-acting LIMITRON design, so it clears overcurrents quickly with no intentional delay. That suits non-motor loads: feeders, panelboard branch circuits, lighting, and resistive equipment. If the circuit feeds a motor or a transformer, the inrush will blow a fast-acting fuse on startup, and you want a time-delay Class RK1 instead, such as Bussmann LPN-RK at 250V.
4) Does the Bussmann KTN-R-15 have a blown fuse indicator?
No. It is a non-indicating fuse, so there is no visual flag or pin to tell you it has opened. You check it with a meter or continuity tester. If maintenance staff need at-a-glance diagnosis, specify an indicating version instead.
5) Is the KTN-R-15 current-limiting?
Yes. Class RK1 is a current-limiting fuse class, which is why it is specified where equipment needs a lower let-through energy than a non-current-limiting Class H fuse provides. The KTN-R-15 covers that at 15A, 250V.
6) Can I put a 15A KTN-R in place of a 20A or 30A fuse to stop nuisance blowing?
Never go the other direction. A fuse is sized to the conductor and the equipment it protects, so replacing a 15A KTN-R with a larger amperage removes that protection even though the fuse physically fits the same 250V Class R clip. Replace like for like at 15A, and if the fuse keeps opening, the load or the circuit needs investigating.
7) What is the KTN-R-15 fuse body made of, and does it hold up in an industrial panel?
The body is a melamine glass tube with 70/30 brass end caps. Melamine gives the mechanical strength for repeated insertion and removal in panelboard clips, and the brass caps keep contact resistance low at the fuse clips.
How fast can I get the Bussmann KTN-R-15 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 KTN-R-15 come with a warranty?
Absolutely. The Bussmann KTN-R-15 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 KTN-R-15?
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
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