Eaton KTU-400 Fuse - Class L Knife Blade 400A
Part Number: KTU-400
Quick Summary
KTU-400 fuse is a high-current protection device for industrial power distribution panels. Engineers often struggle to balance fast fault clearing with safe coordination in compact switchgear. This model lists RoHS compliance; verify region-specific certifications such as CE or IP ratings in your application by consulting Eaton datasheets. With a 400 A rating and Knife blade feature, it provides reliable protection and straightforward installation for panel builders and OEMs.
Product Information
Extended Description
KTU-400 Eaton: Eaton Bussmann series KTU fuse, 400 A
Product Name
Eaton Bussmann series KTU fuse
Catalog Number
KTU-400
UPC
051712613026
Product Length/Depth
8.63 in
Product Height
2.5 in
Product Width
2.5 in
Product Weight
3.75 lb
Warranty
Not Applicable
Compliances
Not Applicable RoHS Compliant
Amperage Rating
400 A
Special features
Knife blade
Low Voltage Branch Circuit Fuse Chapter
Low Voltage Branch Circuit Fuse Chapter
RoHS Search Tool
Bussmann series Fuseology
Bussmann series KTU Class L fuse data sheet No. 1010
Feature: Knife blade design enables fast, clean replacement in existing fuse holders; Business impact: reduces maintenance time and minimizes arc exposure; Application: control cabinets, switchgear, and motor feeders. Feature: 400 A amperage rating protects feeders from overcurrent events; Business impact: protects critical power paths and reduces risk of equipment damage; Application: main protection in distribution panels and industrial machinery. Feature: Compact dimensions (8.63 in length, 2.5 in width, 2.5 in height) and weight of 3.75 lb; Business impact: fits standard Bussmann series holders and eases installation in tight spaces; Application: panelboards, OEM assemblies, and retrofits. Feature: RoHS compliant; Business impact: supports regulatory compliance in worldwide deployments and green initiatives; Application: global manufacturing and electrical installation projects. Feature: Access to catalog and datasheet resources (Low Voltage Branch Circuit Fuse Chapter, Bussmann Series data sheet No. 1010); Business impact: accelerates design-in, validation, and procurement; Application: engineering design reviews and purchasing workflows.
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FAQs
The KTU-400 is a Bussmann series Class L fuse designed for standard Bussmann holders used in a variety of panel and switchgear configurations. Its 8.63 in length and square 2.5 in by 2.5 in footprint align with common fuse blocks, ensuring straightforward replacement and design-in in control cabinets and industrial equipment.
The KTU-400 is rated at 400 A and is intended for main protection in distribution panels, motor feeders, and switchgear. This rating helps prevent overcurrent damage in high-current applications while enabling reliable selective coordination with upstream devices.
Yes, the KTU-400 is RoHS compliant. Regional certifications such as CE or IP ratings may vary by market; verify these on the Eaton datasheets or with your regional distributor to ensure compliance for your specific application.
The Knife blade feature allows quick and safe removal with standard fuse pullers. When replacing, ensure proper lockout-tagout procedures, energization clearance, and correct tool usage to minimize arc exposure and maintain personnel safety.
Using the KTU-400 can reduce downtime through faster fuse replacement and reliable 400 A protection, while maintaining spare-part availability from the Bussmann series. RoHS compliance also lowers regulatory risk, contributing to smoother maintenance cycles and total cost of ownership improvement.