Bussmann KTS-R-225 LIMITRON Fa...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2,062.59
Bussmann KTS-R-225 LIMITRON Fast-Acting Fuse, Class RK1, 225A, 600V

Bussmann KTS-R-225 LIMITRON Fast-Acting Fuse, Class RK1, 225A, 600V

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Model: KTS-R-225

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

$2,062.59
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Bussmann KTS-R-225 LIMITRON Fast-Acting Fuse, Class RK1, 225A, 600V

The Bussmann KTS-R-225 is part of the Eaton Bussmann series LIMITRON line of fast-acting fuses, engineered for dependable overcurrent protection in panelboard applications. Rated 225 A at 600 V, this Class RK1 fuse carries a 200 kAIC interrupt rating at 600 Vac, giving it the current-limiting, high-interrupting-capacity performance electrical professionals rely on for demanding branch circuit and feeder protection. It is offered as a standard, non-indicating fuse suitable for single-pole panelboard installations.

Key Features

  • Amperage Rating: 225 A for reliable overcurrent protection in panelboard applications.
  • Voltage Rating: 600 V, suited for higher-voltage electrical distribution systems.
  • LIMITRON Fast-Acting Design: Fast-acting fuse element clears short-circuit currents quickly to help protect downstream equipment.
  • Class RK1 Rating: UL Class RK1 construction delivers current-limiting characteristics and high interrupting capacity.
  • Interrupt Rating: 200 kAIC at 600 Vac supports demanding short-circuit protection requirements.
  • Non-Indicating Construction: Standard non-indicating fuse body without a blown-fuse indicator.
  • Standard Grade: Standard-grade construction intended for general panelboard use.
  • Panelboard Application: Designed specifically for use in panelboards requiring dependable overcurrent protection.

Technical Specifications

  • Series: KTS-R (LIMITRON)
  • Amperage Rating: 225 A
  • Voltage Rating: 600 V
  • Fuse Class: RK1
  • Interrupt Rating: 200 kAIC at 600 Vac
  • Indicating: Non-indicating
  • Grade: Standard

Typical Applications

  • Panelboard and Load Center Circuit Protection
  • Commercial and Industrial Electrical Distribution
  • Short-Circuit and Overcurrent Protection
  • Branch Circuit and Feeder Protection
  • Renovation and New Construction Electrical Systems

Why Bussmann?

Bussmann, part of the Eaton Bussmann series, engineers its LIMITRON fuses like the KTS-R-225 for consistent, code-compliant overcurrent protection. With a Class RK1 rating, a 225 A / 600 V rating, and a 200 kAIC interrupt rating at 600 Vac, this fuse is built to deliver dependable current-limiting performance in panelboard installations. Choose Bussmann for the reliable protection professionals depend on in critical electrical distribution systems.

Manufacturer Resources

Product Specs

list_batch:
BUSS-20260919
Product Type:
Fast-Acting Fuse
Series:
KTS-R
Voltage Rating:
600V
Amperage Rating:
225A
Configuration:
1-Pole
Grade:
Standard
Department:
Electrical
Product Subgroup:
Fuses
Product Group:
Circuit Protection
Product Weight:
2.4 lb
Compliances:
CE Marked
Product Width:
2 in
Product Height:
2 in
Product Length:
11.63 in

Bussmann KTS-R-225 – Frequently Asked Questions

1) Will a Bussmann KTS-R-225 fit an existing Class R fuse block or rejection clip?
Yes. The KTS-R-225 is a UL Class RK1 fuse, which uses the Class R rejection groove, so it drops into 600V Class R rejection fuse blocks and switches sized for 225A. Class R rejection hardware will also accept it where a plain Class H/K fuse would be rejected, which is the point of the design.
2) Can I use a KTS-R-225 fast-acting fuse on a motor circuit?
Not a good choice. The KTS-R LIMITRON is a fast-acting, non-time-delay fuse, so it clears quickly and will tend to open on motor inrush. It is intended for panelboard, branch circuit and feeder protection. For motor or transformer circuits with high inrush, use a time-delay Class RK1 fuse such as the Bussmann LPS-RK series at the same 225A, 600V rating.
3) How many KTS-R-225 fuses do I need for a three-phase disconnect?
Three. The KTS-R-225 is sold as a 1-pole fuse, so a three-phase fused switch or panelboard takes one per phase. Order two for a single-phase 240V two-pole circuit.
4) Can I replace a Class RK5 fuse with the KTS-R-225?
Physically, yes. RK1 and RK5 share the same Class R dimensions and rejection feature at a given amp and voltage rating, so a 225A, 600V RK5 holder accepts the KTS-R-225. Electrically it is a different fuse: RK5 is normally time-delay, while the KTS-R LIMITRON is fast-acting. Swapping it onto a motor or transformer load will cause nuisance openings. On a straight feeder or lighting and receptacle panel the swap is fine and gives you tighter current limitation.
5) Is a 600V fuse like the KTS-R-225 okay on a 480V or 240V system?
Yes. The 600V rating is a maximum, so the KTS-R-225 can be applied on any system at or below 600 volts, including 480Y/277 and 240V distribution. Its 200 kAIC interrupting rating is stated at 600 Vac, which covers the available fault current on most commercial and industrial services. Never apply a fuse on a system above its voltage rating.
6) Does the KTS-R-225 have a blown fuse indicator?
No. It is a standard non-indicating body, so there is no visual flag or pin to show it has opened. You check it with a meter or a continuity test. If your crew relies on walk-by visual checks, specify an indicating fuse instead.
7) Is the KTS-R-225 current-limiting for equipment short-circuit current rating purposes?
Yes. Class RK1 construction is current-limiting, and the fuse is rated 200 kAIC at 600 Vac. That combination is what lets it be used ahead of downstream gear with a lower short-circuit current rating under a series or let-through analysis. The engineer of record still has to confirm the let-through values against the equipment rating.
8) What is the exact Bussmann part number to order for a 225 amp 600 volt LIMITRON fast-acting fuse?
KTS-R-225. That is the full manufacturer part number for the 225A, 600V Class RK1 LIMITRON fast-acting fuse in the KTS-R series. The KTS-R prefix is the 600V fast-acting line; the matching 250V family is JKS or KTN-R depending on class, so confirm your system voltage before you order.
How fast can I get the Bussmann KTS-R-225 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 KTS-R-225 come with a warranty?
Absolutely. The Bussmann KTS-R-225 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 KTS-R-225?
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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