Bussmann KTK-R LIMITRON Class ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$20.80
Bussmann KTK-R LIMITRON Class CC Fast-Acting Fuse, 600V

Bussmann KTK-R LIMITRON Class CC Fast-Acting Fuse, 600V

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Model: KTK-R-12

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

$20.80
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Bussmann KTK-R LIMITRON Class CC Fast-Acting Fuse, 600V

The Bussmann KTK-R LIMITRON Class CC fast-acting fuse delivers reliable overcurrent protection for specialized circuits and industrial control applications, and is available in 2.5A, 9A, and 12A ratings to match a range of control-circuit requirements. Rated 600V with a 200 kAIC interrupt rating, this Class CC rejection-style fuse features ferrule end x ferrule end terminations and a durable melamine tube body. The non-indicating, standard design provides dependable fast-acting response for equipment and circuit protection, making it a practical choice when specifying replacement fuses for industrial control panels and OEM equipment.

Key Features

  • Amp Rating Options: Available in 2.5A, 9A, and 12A ratings to suit specialized circuits and industrial control applications.
  • Fast-Acting LIMITRON Design: Class CC fast-acting fuse construction delivers quick-response overcurrent protection.
  • Rejection Style: Class CC rejection-style body helps ensure proper fit in compatible fuse holders and blocks, preventing installation of an incorrect fuse type.
  • High Interrupt Rating: 200 kAIC interrupt rating supports use on demanding industrial control circuits.
  • Ferrule End x Ferrule End: Ferrule-to-ferrule terminations for compatibility with standard Class CC fuse holders and blocks.
  • Melamine Tube Construction: Durable melamine tube body for dependable, standard fuse construction.
  • Non-Indicating: Standard non-indicating design, built to Bussmann's standard specification for Class CC fuses.
  • Voltage Rating: Rated 600V for specialized circuit and industrial control applications.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Specialized Circuit Protection
  • Industrial Control Panels and Equipment
  • Machine Tool and OEM Control Circuits
  • Panelboard and Control Circuit Overcurrent Protection
  • Replacement Fuse Service for Class CC Fuse Holders

Why Bussmann?

Bussmann Class CC fuses combine a rejection-style design, ferrule end x ferrule end terminations, and a durable melamine tube body for dependable, code-compliant overcurrent protection. With a 200 kAIC interrupt rating and 600V rating, the KTK-R LIMITRON series is engineered for consistent fast-acting performance across specialized and industrial control applications. Choosing Bussmann for Class CC fuse replacement helps ensure the fit, form, and function professionals expect when maintaining industrial control circuits and OEM equipment.

Manufacturer Resources

Product Specs

Class:
Class CC
Interrupt Rating:
200 kAIC
Application:
Specialized circuits and industrial control
Department:
Electrical
Product Subgroup:
Other Fuses
Packaging Type:
Standard
Product Group:
Fuses
Product Type:
Fuse
Voltage Rating:
600V
Amperage Rating:
2.5A-12A
Product Material:
Melamine
Series:
KTK-R LIMITRON
Configuration:
Ferrule End x Ferrule End
Standards:
Class CC

Bussmann KTK-R-12 – Frequently Asked Questions

1) Will a Bussmann KTK-R fuse fit my existing Class CC fuse holder?
Yes, if the holder is Class CC. The KTK-R LIMITRON is a Class CC rejection-style fuse with ferrule end x ferrule end terminations, so it seats in standard Class CC holders and blocks. The rejection feature is deliberate: it blocks a non-Class CC fuse of the same physical size from being installed in that holder, which is what keeps the 600V and 200 kAIC ratings of the circuit intact.
2) Is a fast-acting Class CC fuse right for a motor or transformer circuit?
Not usually. The KTK-R LIMITRON is a fast-acting fuse, so it clears quickly on overcurrent and will tend to open on the inrush of a motor start or a control transformer energizing. It suits specialized circuits and industrial control loads without heavy inrush. Where you have inrush, a time-delay Class CC fuse is the correct choice instead.
3) What amp ratings does the Bussmann KTK-R LIMITRON come in?
Three ratings are offered: 2.5A (KTK-R-2-1/2), 9A (KTK-R-9) and 12A (KTK-R-12). All three share the same 600V rating, 200 kAIC interrupting rating and Class CC ferrule body, so the only ordering decision is the amp value that matches the control circuit you are protecting.
4) Can I use a 600V Class CC fuse on a 240V or 480V control circuit?
Yes. The 600V rating on the KTK-R is a maximum, so it covers 120V, 240V and 480V control circuits as well. What you cannot do is go the other way and put a lower-voltage fuse into a 600V circuit. The 200 kAIC interrupting rating also means it can clear on systems with high available fault current at the panel.
5) What is the difference between Class CC and Class G or midget fuses of the same size?
Class CC fuses like the KTK-R are physically close to a standard midget fuse but carry a rejection ring on one ferrule, so they will only fit a Class CC rejection holder. That rejection is what guarantees the circuit keeps a 600V, 200 kAIC rated fuse in it. A plain midget or Class G fuse will not drop into a Class CC rejection holder, and a Class CC fuse will fit a plain midget clip but should not be relied on as a substitute where the panel drawing calls out a specific class.
6) I need replacement fuses for an OEM machine control panel. Is this the same fuse?
If the panel legend or the old fuse body reads KTK-R followed by an amp number, this is the same part. Match the amp rating exactly: 2.5A is ordered as KTK-R-2-1/2, plus KTK-R-9 and KTK-R-12. Form and fit are unchanged across the three, only the current rating differs.
7) Does the KTK-R have a blown-fuse indicator?
No. The KTK-R LIMITRON is a non-indicating fuse with a melamine tube body, so there is no pop-up pin or window to show it has opened. If your panel relies on visual fuse status, you either need an indicating version or a fuse holder with an integral blown-fuse indicator light.
How fast can I get the Bussmann KTK-R-12 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 KTK-R-12 come with a warranty?
Absolutely. The Bussmann KTK-R-12 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 KTK-R-12?
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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