Bussmann KBC-800 Eaton Series ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$3,762.79
Bussmann KBC-800 Eaton series KBC semiconductor fuse, 1000 Vdc, 800A, 200 kAIC, Non Indicating, Semiconductor fuse, Stud

Bussmann KBC-800 Eaton Series Semiconductor Fuse, 1000 Vdc, 800A, 200 kAIC, Stud Mount

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Model: KBC-800
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Bussmann KBC-800 Eaton Series Semiconductor Fuse, 1000 Vdc, 800A, 200 kAIC, Stud Mount

The Bussmann KBC-800 is an Eaton Bussmann series KBC semiconductor fuse engineered for high-speed protection of power semiconductor devices in demanding DC power applications. Rated 1000 Vdc and 800A with a 200 kAIC interrupting rating, this non-indicating, stud-mount fuse delivers the current-limiting performance required to safeguard rectifiers, SCRs, and other semiconductor components from damaging fault currents. Backed by UL Recognized component status and RoHS compliance, the KBC-800 is built for reliable performance in industrial power conversion and DC distribution systems.

Key Features

  • Amperage Rating: 800A rating provides robust overcurrent protection for high-capacity semiconductor circuits.
  • Voltage Rating: 1000 Vdc rating supports demanding DC power conversion and distribution applications.
  • Interrupting Rating: 200 kAIC interrupting capacity delivers current-limiting protection against high fault currents.
  • Non-Indicating Design: Non-indicating construction keeps the fuse straightforward to inspect and replace.
  • Stud Mount Connection: Stud-style termination provides a secure, low-resistance electrical connection.
  • Eaton Bussmann Series KBC: Part of the Eaton Bussmann series KBC semiconductor fuse family engineered for power semiconductor protection.

Certifications & Compliance

  • UL Recognized
  • RoHS Compliant

Technical Specifications

  • Amperage Rating: 800 A
  • Certifications: UL Recognized
  • Compliances: RoHS Compliant
  • Packaging Type: Standard
  • Product Height: 2.5 in
  • Product Length Depth: 6.25 in
  • Product Weight: 4.758 lb
  • Product Width: 2.5 in

Typical Applications

  • Power Semiconductor Protection (SCRs, Diodes, Rectifiers)
  • DC Power Conversion Equipment
  • Industrial Drives and Motor Control Systems
  • High Fault Current Industrial Environments
  • Rectifier and Power Supply Circuits

Why Bussmann?

Bussmann by Eaton engineers the KBC series to deliver dependable, code-compliant overcurrent protection for critical semiconductor applications. With a 200 kAIC interrupting rating, a 1000 Vdc rating, and UL Recognized status, the KBC-800 provides the current-limiting performance electrical professionals rely on for demanding DC power systems.

Manufacturer Resources

Product Specs

Amperage Rating:
800 A
Certifications:
UL Recognized
Compliances:
RoHS Compliant
Fuse Indicator:
Non Indicating
Interrupt Rating:
200 kAIC
Mounting Method:
Stud
Packaging Type:
Standard
Product Height:
2.5 in
Product Length Depth:
6.25 in
Product Weight:
4.758 lb
Product Width:
2.5 in
Voltage Rating:
1000 Vdc
Department:
Electrical
Product Type:
Fuse
Product Group:
Fuses
Product Subgroup:
Other Fuses

Bussmann KBC-800 – Frequently Asked Questions

1) Can the Bussmann KBC-800 be used on a 1000 Vdc DC bus?
Yes. The KBC-800 semiconductor fuse carries a 1000 Vdc voltage rating and an 800 A current rating, so it suits DC power conversion and DC distribution buses up to 1000 volts DC. The rating published for this fuse is DC only, so size it against your DC system voltage rather than an AC line value.
2) How does the Bussmann KBC-800 mount into a fuse holder or bus bar?
It is a stud mount fuse. The terminations bolt directly to bus bar or to stud-style fuse mounting blocks, which gives a low resistance joint at 800 A. It does not drop into a clip-style or ferrule holder, so confirm your existing mounting hardware is stud type before ordering.
3) Is a semiconductor fuse like the KBC-800 the right choice, or should I use a standard Class J or T fuse?
Use a semiconductor fuse when the thing you are protecting is the silicon. The KBC-800 is a high-speed, current-limiting fuse built to clear before an SCR, diode or rectifier stack is damaged, which ordinary branch-circuit fuses will not do. Standard Class J or T fuses protect conductors and equipment against overload and short circuit, but they let through far more energy than a power semiconductor can survive. On drives, rectifiers and DC power supplies, the usual arrangement is branch-circuit fusing upstream and a semiconductor fuse close to the device.
4) Is the Bussmann KBC-800 UL Listed?
It is UL Recognized as a component, not UL Listed as a standalone device, and it is RoHS compliant. Recognized component status means it is evaluated for use inside listed end equipment such as drives, rectifiers and power conversion assemblies, which is where semiconductor fuses normally live. For specification packages that demand a UL Listed branch circuit fuse, you still need listed branch protection ahead of it.
5) What are the dimensions and weight of the KBC-800 fuse for panel layout?
The fuse body measures 6.25 in length/depth by 2.5 in height by 2.5 in width and weighs 4.758 lb. At nearly five pounds it needs both studs properly supported and torqued; plan enclosure clearance around a 6.25 inch body plus your lug and cable bend space.
6) Does the KBC-800 have a blown fuse indicator or microswitch option?
No. The KBC-800 is a non-indicating fuse, with no pin indicator or provision for a blown-fuse microswitch. If your control scheme needs a remote blown-fuse alarm, you will need an indicating version of the fuse or a separate voltage-sensing relay across the fuse.
7) What part number do I order to replace a KBC-800 in an existing drive cabinet?
The manufacturer part number is KBC-800, from the Eaton Bussmann series KBC family of semiconductor fuses. When replacing an existing fuse, match all four values on the old one: 800 A, 1000 Vdc, 200 kAIC interrupting, and stud mount termination. A KBC fuse of a different amp rating will physically differ, so do not substitute on body size alone.
8) What kinds of equipment is the KBC-800 typically installed in?
Power semiconductor protection is the job: SCR and diode rectifier stacks, DC power conversion equipment, industrial drives and motor control, power supply circuits, and installations where available fault current is high. It is a DC-rated device at 1000 Vdc, so it belongs on the DC side of the conversion equipment.
How fast can I get the Bussmann KBC-800 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 KBC-800 come with a warranty?
Absolutely. The Bussmann KBC-800 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 KBC-800?
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 KBC-800 from ZenSupply?
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