Bussmann Eaton KRP-C Series Cl...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,071.65
Bussmann Eaton KRP-C Series Class L Time-Delay Fuse, 750A-1200A

Bussmann Eaton KRP-C Series Class L Time-Delay Fuse, 750A-1200A

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Model: KRP-C-1000SP

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

$1,071.65
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Bussmann Eaton KRP-C Series Class L Time-Delay Fuse, 750A-1200A

The Bussmann KRP-C Class L current-limiting time-delay fuse family from Eaton delivers dependable overcurrent protection across an amperage range of 750A to 1200A, with a 600Vac/300Vdc dual voltage rating for versatile AC and DC use. Engineered with low-peak current-limiting technology and secure bolted blade end connections, this Class L fuse line is built for large distribution switchboards, heavy machinery disconnects, and power panelboards where a 300 kAIC interrupt rating at 600Vac is required. A 4-second time-delay response at 500% supports selective coordination and helps avoid nuisance tripping during motor starting and other inrush conditions.

Key Features

  • Amp Rating Range: Available from 750A to 1200A to match a range of distribution and disconnect requirements.
  • Class L Current-Limiting Design: Low-peak current-limiting technology reduces let-through energy and protects downstream equipment during fault conditions.
  • Time-Delay Response: 4-second response time at 500% provides selective coordination and resists nuisance tripping on motor and equipment startup.
  • 300 kAIC Interrupt Rating: Rated 300 kAIC at 600Vac (100 kAIC at Vdc) for reliable performance in high-fault-current environments.
  • Dual Voltage Rating: 600Vac/300Vdc rating supports both AC and DC electrical systems.
  • Bolted Blade End Connections: Bolted blade end X bolted blade end configuration ensures a secure, reliable mechanical and electrical connection.
  • Non-Indicating Design: Standard non-indicating construction for straightforward installation in compatible switchgear.

Technical Specifications

  • Refer to manufacturer documentation for complete specifications.

Typical Applications

  • Large Distribution Switchboards
  • Industrial Machinery Disconnects
  • Commercial Power Panelboards
  • Manufacturing Facilities with Heavy Electrical Loads
  • Data Centers Requiring Reliable Power Distribution Protection
  • Healthcare Facilities with Critical Power Infrastructure

Why Bussmann?

Bussmann by Eaton engineers the KRP-C Class L fuse family for dependable, code-compliant overcurrent protection in demanding electrical systems. The current-limiting time-delay design, bolted blade end connections, and 300 kAIC interrupt rating combine to deliver consistent, reliable performance across the 750A-1200A range for professional electrical installations.

Manufacturer Resources

Spec Sheet

Product Specs

Class:
Class L
Packaging Type:
Standard
Department:
Electrical
Voltage Rating:
600Vac/300Vdc
Product Type:
Fuse
Series:
KRP-C
Amperage Rating:
750A-1200A
Connection Type:
Bolted Blade
Product Group:
Fuses
Product Subgroup:
Other Fuses

Bussmann KRP-C-1000SP – Frequently Asked Questions

1) What amp ratings does the Bussmann KRP-C Class L fuse come in?
The KRP-C Class L time-delay fuse family covers 750A through 1200A, with four orderable ratings: 750A (KRP-C-750SP), 801A (KRP-C-801SP), 1000A (KRP-C-1000SP), and 1200A (KRP-C-1200SP). Order by the amp rating that matches the switchboard or disconnect it is going into, since the fuse amp rating has to match the fuse block and the equipment's overcurrent protection schedule.
2) Will a Class L fuse like the KRP-C drop into a Class J or Class T fuse holder?
No. Class L is its own mounting standard and is not interchangeable with Class J, Class T, or Class R. Class L fuses start at 601A and bolt directly to pads in the switchgear; the KRP-C's bolted blade dimensions are specific to Class L mounts. If the equipment is fused below 601A, you need a Class J or Class R fuse instead.
3) Will a KRP-C hold on motor inrush without nuisance blowing?
That is what the time delay is for. The KRP-C carries a 4-second minimum response at 500% of rating, so it rides through motor starting and transformer inrush rather than opening on it. That same delay characteristic is what makes it usable in a selectively coordinated system with downstream fuses.
4) Is the KRP-C rated for a service with high available fault current?
Yes. The KRP-C is rated 300 kAIC at 600Vac, which covers large service entrances and switchboards where available fault current is high, and its current-limiting action cuts the let-through energy reaching downstream gear during a bolted fault.
5) What is the difference between KRP-C-800 and the KRP-C-801SP rating?
The 801A rating (KRP-C-801SP) is an odd ampere size Bussmann offers in the KRP-C line alongside 750A, 1000A and 1200A. Odd sizes like 801A exist so you can fine tune the fuse to the load and to the coordination study rather than jumping to the next standard step. Match the number on the drawing exactly, since a 750A and an 801A are not the same protection.
6) Does the KRP-C have a blown fuse indicator?
No. The KRP-C ships in the standard non-indicating construction, so there is no pop-out pin or visual indicator to tell you which one opened. On a three-fuse set you will need to meter or ring out the fuses to find the failed leg.
7) Where is the KRP-C typically used in a building's electrical distribution?
Main and feeder protection at the large end of the system: distribution switchboards, industrial machinery disconnects, and commercial power panelboards. It shows up on main service protection in manufacturing plants, data centers, and healthcare facilities where the feeder is 750A or larger and the fault current is high.
How fast can I get the Bussmann KRP-C-1000SP 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 KRP-C-1000SP come with a warranty?
Absolutely. The Bussmann KRP-C-1000SP 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 KRP-C-1000SP?
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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