Bussmann KRP-CL Series Class L...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$6,606.66
Bussmann KRP-CL Series Class L Time-Delay Fuse, 600V

Bussmann KRP-CL Series Class L Time-Delay Fuse, 600V

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Model: KRP-CL-400

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

$6,606.66
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Bussmann KRP-CL Series Class L Time-Delay Fuse, 600V

The Bussmann KRP-CL Series Class L Time-Delay Fuse, part of the Eaton Bussmann fuse line, is a time-delay, current-limiting fuse engineered for large distribution switchboards, large machinery disconnects, and power panelboards. This Class L fuse is available in amp ratings from 400A to 450A, carries a 600V voltage rating, and delivers a 200 kAIC interrupt rating at 600 Vac for demanding industrial power distribution applications.

Key Features

  • Amp Rating Range: available in 400A and 450A ratings to match large switchboard and machinery disconnect load requirements.
  • Time-Delay, Current-Limiting Design: Class L construction engineered for large distribution switchboards and power panelboards.
  • Blade End x Blade End Connection: standard blade-end terminations for switchboard-style fuse clip mounting.
  • Voltage Rating: 600V for use in high-voltage industrial power distribution systems.
  • Interrupt Rating: 200 kAIC at 600 Vac for reliable performance under high fault-current conditions.
  • Non-Indicating, Standard Configuration: standard Class L fuse body without blown-fuse indication.
  • RoHS Compliant Construction: meets RoHS compliance requirements for restricted substances.

Certifications & Compliance

  • RoHS Compliant

Technical Specifications

  • Product Length Depth: 8.63 in
  • Product Weight: 3.26 lb
  • Voltage Rating: 600V
  • Product Width: 2.78 in
  • Compliances: RoHS Compliant
  • Interrupt Rating: 200 kAIC at 600 Vac
  • Product Height: 2.78 in

Typical Applications

  • Large Distribution Switchboards
  • Large Machinery Disconnects
  • Power Panelboards
  • Industrial Power Distribution Systems
  • Commercial and Industrial Electrical Installations

Why Bussmann?

Bussmann Class L fuses are built for dependable, code-compliant overcurrent protection in demanding industrial power distribution systems. With a 200 kAIC interrupt rating at 600 Vac, time-delay current-limiting performance, and RoHS-compliant construction, the KRP-CL Series is engineered to deliver reliable protection for large switchboards, machinery disconnects, and panelboards in professional electrical installations.

Manufacturer Resources

Product Specs

Connection:
Blade end x blade end
Packaging Type:
Standard
Department:
Electrical
Fuse Indicator:
Non-indicating
Class:
Class L
Product Length Depth:
8.63 in
Product Weight:
3.26 lb
Voltage Rating:
600V
Product Width:
2.78 in
Compliances:
RoHS Compliant
Interrupt Rating:
200 kAIC at 600 Vac
Product Height:
2.78 in
Product Type:
Fuse
Amperage Rating:
400A - 450A
Connection Type:
Blade End x Blade End
Series:
KRP-CL
Standards:
RoHS Compliant
Product Group:
Fuses
Product Subgroup:
Other Fuses

Bussmann KRP-CL-400 – Frequently Asked Questions

1) Will a Bussmann KRP-CL Class L fuse fit my switchboard fuse clips?
The KRP-CL is a bolt-style Class L body with blade end x blade end terminations, which is what switchboard-style Class L fuse mountings take. Body size is 8.63 in long by 2.78 in wide by 2.78 in high, so confirm your fuseholder or disconnect has the Class L window for that footprint before ordering. Each fuse weighs 3.26 lb.
2) What amp ratings does the Bussmann KRP-CL come in?
Two ratings: 400A (KRP-CL-400) and 450A (KRP-CL-450). Pick by the load and the ampere rating of the switch or switchboard it drops into, not by what fits the clips, since both share the same Class L body.
3) Can I use a KRP-CL fuse on a 480V or 600V industrial service?
Yes. The KRP-CL Class L fuse is rated 600V, so it covers 480V and 600V systems. Interrupting rating is 200 kAIC at 600 Vac, which is what you need where available fault current at the switchboard is high.
4) Is the KRP-CL a time-delay fuse or a fast-acting one?
Time-delay, and current-limiting. That combination lets it ride through the inrush of large motors and transformers on a machinery disconnect without nuisance opening, while still clamping fault current on a hard short. If your application needs no intentional delay, a fast-acting Class L is the different animal to look for.
5) Does the KRP-CL have a blown fuse indicator?
No. The KRP-CL is a non-indicating Class L fuse, so there is no visual pop-up or indicating pin to tell you it has opened. Crews troubleshooting a dead switchboard will need to meter or ohm out the fuse. If your maintenance standard requires visual indication, specify an indicating Class L instead.
6) Where is a Class L fuse like the KRP-CL actually used?
Class L is the large-ampere end of the line: main and feeder protection in large distribution switchboards, power panelboards, and large machinery disconnects. Below about 600A you are usually in Class J or Class RK territory with smaller bodies; Class L fuses bolt in and start where those leave off.
7) Does the Bussmann KRP-CL meet RoHS for our facility spec?
Yes, KRP-CL Class L fuses are built to RoHS compliance requirements for restricted substances. That is the compliance statement carried on the product.
8) How is the KRP-CL packaged for ordering spares?
Standard packaging, sold by the individual fuse with the amp rating chosen as the option: KRP-CL-400 or KRP-CL-450. For a three-phase switchboard you will want three of the same rating per set.
How fast can I get the Bussmann KRP-CL-400 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-CL-400 come with a warranty?
Absolutely. The Bussmann KRP-CL-400 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-CL-400?
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 KRP-CL-400 from ZenSupply?
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