You may also like
Bussmann KTK-R LIMITRON Class CC Fast-Acting Fuse, 600V
Model: BUS-KTK-R
Bussmann KTK-R LIMITRON Class CC Fast-Acting Fuse, 600VThe Bussmann KTK-R LIMITRON Class CC fast-acting fuse delivers reliable overcurrent protection for specialized circuits and industrial control...
Bussmann
Starting at
$20.80
Bussmann KTK-R Series Class CC LIMITRON Fast-Acting Fuse, Ferrule End, 600V
The Bussmann KTK-R Series is a Class CC LIMITRON fast-acting fuse engineered for current-limiting overcurrent protection in industrial control circuits, motor starters, and specialized electronic equipment. Rated 600V AC with a 200 kAIC interrupt rating, this rejection-style fuse features a ferrule end x ferrule end connection and melamine tube construction for reliable, compact protection in control panels and enclosures. The KTK-R Series spans a 3A-30A amp rating range, giving electrical professionals a single Class CC rejection-style platform for a wide range of circuit protection needs.
Key Features
- Amp Rating Range: Available in 3A, 4A, 5A, 7A, 8A, 10A, 15A, 20A, 25A, and 30A ratings, so you can match the KTK-R Series to your circuit's exact load requirements.
- Voltage & Interrupt Rating: Rated 600V AC with a 200 kAIC interrupt rating for safe clearing of high fault currents and reduced arc-flash exposure.
- LIMITRON Current-Limiting Technology: Fast-acting response reduces let-through energy during fault conditions, minimizing damage to downstream equipment.
- Class CC Rejection-Style Design: Ensures only the correct fuse type can be installed, maintaining proper overcurrent protection coordination.
- Ferrule End Connection: Ferrule end x ferrule end configuration provides secure contact pressure for dependable industrial connections.
- Melamine Tube Construction: Compact, durable fuse body suited to control panels and space-constrained enclosures.
- Non-Indicating Design: Professional-grade, cost-effective construction without visual blown-fuse indication.
Certifications & Compliance
- CE Marked
Technical Specifications
- Product Type: LIMITRON Fast-acting fuse
- Product Details: LIMITRON Fast-acting fuse
Typical Applications
- Industrial Control Circuits and Motor Starters
- Specialized Electronic and Instrumentation Circuits
- Control Panel and Enclosure Protection
- Lighting Control Systems with Electronic Ballasts and LED Drivers
- Motor Control Centers Requiring Rejection-Style Fuses
- Commercial Building Systems Including HVAC and Fire Alarm Controls
Why Bussmann?
Bussmann backs the KTK-R Series with proven LIMITRON current-limiting technology, CE marking compliance, and a Class CC rejection-style design that keeps incorrect fuses out of your circuits. Electrical professionals rely on Bussmann's fast-acting, current-limiting protection for dependable performance across industrial control and specialized circuit applications.
Manufacturer Resources
Product Specs
- Department:
- Electrical
- Class:
- Class CC
- Product Type:
- LIMITRON Fast-Acting Fuse
- Special Features:
- Rejection style
- Fuse Indicator:
- Non-indicating
- Product Group:
- Fuses
- Voltage Rating:
- 600V
- Application:
- Specialized circuits and industrial control
- Interrupt Rating:
- 200 kAIC
- Product Details:
- LIMITRON Fast-acting fuse
- Packaging Type:
- Standard
- Product Material:
- Melamine
- Connection:
- Ferrule end x ferrule end
- Product Subgroup:
- Fast Acting Fuses
- Amperage Rating:
- 3A-30A
- Connection Type:
- Ferrule End
- Series:
- KTK-R
- Listing:
- CE Marked
Bussmann KTK-R-10 – Frequently Asked Questions
1) Will a Bussmann KTK-R fuse fit a standard Class CC fuse holder?
Yes. The KTK-R is a Class CC rejection-style fuse with a ferrule end x ferrule end body, so it drops into any Class CC rejection holder or fuse block. The rejection feature is deliberate: it blocks non-Class CC fuses from being installed in that holder, which keeps the circuit's overcurrent coordination intact. If your holder is a standard midget (non-rejection) type, a Class CC fuse will still seat, but you lose the rejection protection.
2) Is the KTK-R fast-acting or time-delay? I'm protecting a motor starter.
Fast-acting. The KTK-R is a LIMITRON fast-acting fuse, which means it clears quickly and limits let-through energy on a fault. That's what you want for control circuits, control transformers, and electronic loads. For a motor branch circuit with a real inrush, a fast-acting fuse will nuisance-open on starting current, so you'd want a time-delay Class CC instead. The KTK-R suits the control side of a motor starter, not the motor's running current.
3) Can I use a KTK-R fuse on a 480V or 600V control circuit?
Yes. The KTK-R carries a 600V rating, so it covers 120V, 240V, 480V and 600V AC control circuits. Its 200 kAIC interrupting rating means it can safely clear high available fault current at service-entrance-adjacent panels, which is the number an engineer checks against the available fault current at the point of installation.
4) What amp ratings does the Bussmann KTK-R come in?
Ten ratings across the 3A to 30A range: 3, 4, 5, 7, 8, 10, 15, 20, 25 and 30 amps, ordered as KTK-R-3 through KTK-R-30. All share the same 600V, Class CC body, so you can standardize one holder style across a panel and stock only the amperages you actually use.
5) Does the KTK-R show when it has blown?
No. The KTK-R is a non-indicating fuse, so there's no pop-up pin or visual flag. To troubleshoot you meter across the fuse or pull it and check continuity. If your maintenance crew wants a blown-fuse indication for faster panel diagnosis, you'd need an indicating Class CC fuse or a holder with an indicating light.
6) Will a KTK-R protect LED drivers and electronic ballasts in a lighting control panel?
That's one of its intended uses. Fast-acting current-limiting response keeps let-through energy low, which matters for solid-state loads like LED drivers, electronic ballasts, and instrumentation that won't survive a long clearing time. Size the fuse to the driver manufacturer's stated branch protection, then pick the matching KTK-R amp rating from the 3A to 30A range.
7) How do I order the right KTK-R, and is anything else needed?
Order by amp rating: the part number is KTK-R plus the amperage, so a 20 amp is KTK-R-20 and a 10 amp is KTK-R-10. Everything else, 600V, Class CC, 200 kAIC, ferrule ends, is fixed across the series, so amperage is the only choice. The fuse itself is the fuse only; you supply the Class CC rejection fuse block or holder.
8) What is the KTK-R fuse body made of, and does it hold up in a hot control panel?
The tube is melamine, a hard thermoset used for compact industrial fuse bodies in control panels and tight enclosures. It's the standard construction for Class CC rejection fuses and is what keeps the package small enough to fit dense DIN-rail fuse blocks.
How fast can I get the Bussmann KTK-R-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 KTK-R-10 come with a warranty?
Absolutely. The Bussmann KTK-R-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 KTK-R-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 KTK-R-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.