Eaton KOS350 Edison Fuse - 10 kAIC Class K5 CE
Part Number: KOS350
Quick Summary
Eaton Edison KOS fuse provides fast-acting protection for 350 A circuits in 600 V industrial power systems. Engineers often struggle to balance rapid fault clearing with reliable operation in compact panels, and the KOS350 meets that need with a high 10 kAIC interrupt rating. This device is CE Marked and CSA Certified, offering broad regulatory confidence for global installations. Designed to streamline procurement and field service, it supports 1-piece packaging and standard Edison fuse infrastructure, delivering predictable protection while reducing downtime and maintenance complexity across MCCs, switchgear, and panel boards.
Product Information
Extended Description
KOS350 Eaton: Eaton Edison KOS fuse, Knife blade, 350 A, Class K5, Non-indicating, 10 kAIC, Standard, 1, 600 V
Product Name
Eaton Edison KOS fuse
Catalog Number
KOS350
UPC
782634373506
Product Length/Depth
11 in
Product Height
2 in
Product Width
2 in
Product Weight
0.001 lb
Warranty
No warranty
Compliances
CE Marked
Certifications
Not Applicable CSA Certified
Amperage Rating
350 A
Interrupt rating
10 kAIC
Voltage rating
600 V
Packaging type
Standard
Class
Class K5
Fuse indicator
Non-indicating
Quantity
1
Special features
Knife blade
Feature: 350 A amperage rating paired with a 10 kAIC interrupt rating ensures fast fault clearance for high-current circuits. Business Impact: minimizes equipment damage, reduces downtime, and improves line availability in demanding applications. Application: ideal for motor control centers, switchgear buses, and large distribution panels where fault currents can spike. Feature: Knife blade construction and Class K5 designation provide durable mechanical fit with reliable operation. Business Impact: lowers nuisance trips and supports consistent protection during startup sequences. Application: fits standard Edison fuse holders for quick field upgrades. Feature: Non-indicating status and standard packaging (1 piece, 11 in x 2 in x 2 in). Business Impact: simplifies stocking, lowers panel clutter, and speeds replacements. Application: broad compatibility in control panels and power distribution enclosures. Feature: CE Marked and CSA Certified compliance. Business Impact: ensures regulatory alignment across regions, easing procurement and installation. Application: suitable for international projects and safety-driven environments. Feature: 600 V rating with 11 in length enables easy integration in common industrial footprints. Business Impact: reduces space planning constraints and simplifies retrofits. Application: suitable for legacy and new installations in modern facilities.
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FAQs
KOS350 uses a knife blade design and is intended for Edison-style fuse holders. It matches standard dimensions (11 in length, 2 in width, 2 in height) and is supplied as a single unit. When upgrading, verify holder compatibility with 350 A and 600 V circuits and ensure enclosure clearance for safe installation.
The fuse is rated for 350 A with a 600 V voltage rating and a 10 kAIC interrupt capacity. It belongs to Class K5 and is non-indicating. These ratings enable fast fault clearance for high-current loads while maintaining safe operation in industrial environments.
Yes. With a 350 A rating and a 10 kAIC interrupt rating, KOS350 is well-suited for MCCs and motor feeders. It provides reliable protection for high-inrush starting conditions, helping to minimize nuisance trips while safeguarding valuable equipment.
KOS350 is CE Marked and CSA Certified, aligning with international safety and compliance standards. While it carries no warranty, the device’s structured packaging and standard form factor support predictable maintenance and compliance across diverse projects.
Using KOS350 can reduce downtime through reliable fault clearing and predictable behavior in harsh environments. Standard packaging simplifies stocking and replacements, lowering maintenance logistics costs and enabling faster field service without compromising protection or regulatory compliance.