Eaton KOS125 Fuse - Class K5, 10 kAIC, 600 V rated
Part Number: KOS125
Quick Summary
Eaton KOS125 fuse provides reliable overcurrent protection for electrical panels, MCCs, and motor circuits. In industrial environments where downtime is costly, nuisance tripping and slow fault clearance can erase productivity gains; this fuse design minimizes those risks with a robust 125 A rating and a 10 kAIC interrupt capacity. The product carries CE marking and CSA certification, reflecting compliance with essential safety and performance standards. By aligning with Eaton's Edison lineage, the KOS125 supports standard packaging and straightforward replacement, reducing maintenance time. Choosing this fuse also supports compliant, scalable protection across distributed systems, enabling easier spares management and consistent performance in demanding applications within automation and power distribution.
Product Information
Extended Description
KOS125 Eaton: Eaton Edison KOS fuse, Knife blade, 125 A, Class K5, Non-indicating, 10 kAIC, Standard, 1, 600 V
Product Name
Eaton Edison KOS fuse
Catalog Number
KOS125
UPC
782634371250
Product Length/Depth
9 in
Product Height
1 in
Product Width
1 in
Product Weight
0.001 lb
Warranty
No warranty
Compliances
CE Marked
Certifications
Not Applicable CSA Certified
Amperage Rating
125 A
Interrupt rating
10 kAIC
Voltage rating
600 V
Packaging type
Standard
Class
Class K5
Fuse indicator
Non-indicating
Quantity
1
Special features
Non-indicating
Feature: Knife-blade contact and Class K5 construction provide robust interrupt performance at 125 A. Business Impact: This yields predictable fuse operation during fault conditions, reducing arcing and improving protective coordination across devices. Application: Ideal for electrical panels and motor-control centers in manufacturing facilities where downtime is costly and uptime is mission-critical. Feature: 10 kAIC interrupt rating delivers fast fault current interruption for high-energy systems. Business Impact: By containing faults quickly, you protect conductors, drives, and switchgear, which lowers repair costs and minimizes unplanned downtime. Application: Well-suited for distribution boards, MCCs, and large equipment bays in process and automation environments. Feature: 600 V voltage rating and standard packaging streamline installation and replacement. Business Impact: Familiar Edison form factor reduces spare stocking complexity and speeds field service. Application: Fits Eaton Edison fuse bases and standard panel layouts across new builds and retrofits. Feature: Non-indicating status and CE Marked plus CSA Certified compliance address visibility and regulatory needs. Business Impact: Decreases panel clutter while ensuring safety certification for regulated facilities. Application: Suitable for CE-compliant installations in Europe and CSA-enabled sites in North America, with straightforward procurement from the Eaton Edison lineup.
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FAQs
The KOS125 is designed for electrical panels, motor control centers, and distribution boards in industrial settings. With a 125 A rating and 10 kAIC interrupt capacity, it provides reliable protection for high-energy circuits while supporting standard Edison fuse bases for straightforward cross-compatibility.
Its 10 kAIC interrupt rating enables fast interruption of fault currents, reducing arc duration and limiting damage to conductors and downstream equipment. The knife-blade design also contributes to consistent contact performance during rapid fault events.
Yes. The KOS125 uses the Edison cutoff style and standard packaging, enabling seamless replacement and straightforward stocking alongside other Bussmann Edison fuses in already established panel layouts.
The KOS125 is CE Marked and CSA Certified, signaling compliance with essential safety and performance standards. This supports regulatory adherence in European and North American facilities and simplifies vendor qualification during audits.
The fuse’s standard form factor and readily available stock reduce downtime during replacements, while its robust interrupt rating minimizes damage from faults. Over time, this translates to lower maintenance costs and more predictable protection across plant electrical distribution.