Eaton KOS90 Fuse Edison - Class K5, 90 A, 600 V
Part Number: KOS90
Quick Summary
Eaton KOS90 fuse Edison protects industrial panels and motor circuits with fast overcurrent protection. The main challenge engineers face is preventing nuisance trips while maintaining rapid response to genuine faults that can interrupt production. Key certifications include CSA Certified markings, and regional CE or IP requirements should be confirmed with Eaton for your application. This Class K5, 90 A, 600 V knife-blade fuse is designed for easy integration with Bussmann Edison holders and standard protection schemes. The product's non-indicating design simplifies panel layouts, while its 5-piece packaging supports bulk stocking and faster maintenance workflows, delivering measurable uptime improvements and lower total cost of ownership.
Product Information
Extended Description
KOS90 Eaton: Eaton Edison KOS fuse, Knife blade, 90 A, Class K5, Non-indicating, 10 kAIC, Standard, 5, 600 V
Product Name
Eaton Edison KOS fuse
Catalog Number
KOS90
UPC
782634370901
Product Length/Depth
7 in
Product Height
1 in
Product Width
1 in
Product Weight
0.001 lb
Warranty
No warranty
Compliances
Not Applicable
Certifications
Not Applicable CSA Certified
Amperage Rating
90 A
Interrupt rating
10 kAIC
Voltage rating
600 V
Packaging type
Standard
Class
Class K5
Fuse indicator
Non-indicating
Quantity
5
Special features
Knife blade
Feature: 90 A amperage rating with a 10 kAIC interrupt rating at 600 V. Business impact: reliable fault-current interruption to protect downstream equipment and minimize unplanned downtime in high-energy circuits. Application: feeder circuits and motor control protection within industrial panels. Feature: Knife blade contact design. Business impact: enables quick, tool-free replacement and reduces service time during routine maintenance or fault replacement. Application: service-ready installations in production environments where uptime is critical. Feature: Class K5 fuse with non-indicating indicator. Business impact: compact, space-efficient installation with straightforward spatial planning in control cabinets. Application: streamlined panel layouts where indication is provided by separate status schemes. Feature: Standard packaging of 5 fuses. Business impact: improved库存 management and lower per-unit procurement costs for bulk projects. Application: multi-point installations or large-scale panel builds. Feature: 600 V rating and compatibility with Edison Bussmann holders. Business impact: broad applicability across industrial power distribution and control systems with proven compatibility. Application: new builds and retrofits requiring consistent protection performance and installation efficiency.
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FAQs
The KOS90 uses a knife-blade contact design designed for Edison Bussmann holders. Install by aligning the fuse with the holder contacts, press firmly to seat, and ensure the assembly is within the KN-series footprint. With standard packaging of five fuses, keep spare units nearby to minimize downtime during replacement. Always verify voltage and current ratings are appropriate for the circuit and observe all safety procedures during replacement.
The KOS90 is rated for 90 A with an interrupt rating of 10 kAIC at 600 V. This combination provides strong short-circuit protection for high-current industrial circuits while limiting the risk of arc flash and equipment damage. Use in circuits where peak fault current may reach up to 10 kA and ensure coordination with upstream protective devices.
Yes, the KOS90 supports motor control protection where 90 A loads and 600 V systems are involved. Its Class K5 design and non-indicating status are typical in panels requiring compact protection elements. Ensure proper coordination with motor starters, fusing time-current characteristics, and downstream protection to avoid nuisance tripping while guarding motor windings.
The KOS90 is CSA Certified, confirming compliance with applicable North American safety standards. Other marks such as CE or IP ratings may not be listed for this model; verify regional regulatory requirements with Eaton or refer to the Eaton specification sheet to confirm current certifications relevant to your installation location and industry standards.
Using the KOS90 can reduce downtime by enabling rapid replacement with a knife-blade design and 5-fuse packaging for bulk stocking. The 90 A, 10 kAIC protection minimizes catastrophic faults, while straightforward installation lowers maintenance time. Over time, this translates to lower total cost of ownership through fewer unplanned outages and faster maintenance workflows in high-demand production environments.