Eaton KWS-R-3 Fuse - 200 kAIC
Part Number: KWS-R-3
Quick Summary
The Eaton KWS-R-3 fuse provides fast-acting overcurrent protection for photovoltaic systems, inverters, and panelboards. Engineers and procurement teams frequently wrestle with finding a fuse that delivers reliable response without driving up enclosure size or lead times. It is CE marked and built to Class RK1 standards, offering a 3 A rating with a 200 kAIC interrupt capability at 600 V for demanding PV and commercial setups. By standardizing on a Bussmann series solution, you gain consistency across projects and simplify spare-part inventories. The compact 5 in length and 0.81 in dimensions fit standard enclosures, while the non-indicating design maintains clean panel appearances. Together, these attributes translate to faster installations, lower lifecycle costs, and higher uptime for critical energy infrastructure.
Product Information
Extended Description
KWS-R-3 Eaton: Eaton Bussmann series KWS-R fuse, Photovoltaic systems, Inverters, Panelboards, 3 A, Class RK1, Non-indicating, 200 kAIC at 600 Vac, Standard, 600 V
Product Name
Eaton Bussmann series KWS-R fuse
Catalog Number
KWS-R-3
UPC
051712658744
Product Length/Depth
5 in
Product Height
0.81 in
Product Width
0.81 in
Product Weight
0.13 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
3 A
Interrupt rating
200 kAIC at 600 Vac
Voltage rating
600 V
Packaging type
Standard
Class
Class RK1
Fuse indicator
Non-indicating
KWS-R-3~LIMITRON FAST ACTING FUSE
KWS-R-3~LIMITRON FAST ACTING FUSE
Bussmann series Fuseology
Eaton Specification Sheet - KWS-R-3
Feature: Fast-acting LIMITRON fuse design with 3 A rating and 200 kAIC interrupt capability at 600 V. Business Impact: Provides precise protection for PV strings and inverters, reducing nuisance trips and potential equipment damage. Application: PV arrays, inverters, and panelboards where rapid fault clearance is critical. Feature: Class RK1 construction with standard packaging. Business Impact: Ensures compatibility with common electrical protection schemes and simplifies procurement. Application: Control panels and distribution enclosures in industrial and commercial builds. Feature: CE Marked for broad regulatory compliance. Business Impact: Accelerates market entry and reduces compliance risk across EU and other CE regions. Application: Global PV deployments and utility-ready installations. Feature: Non-indicating fuse with compact form factor (5 in x 0.81 in x 0.81 in). Business Impact: Maximizes enclosure space, eases retrofit projects, and supports high-density panel layouts. Application: Space-constrained electrical cabinets and solar inverter housings. Feature: 3 A rating and 600 V rating. Business Impact: Aligns with standard low-current circuits and higher voltage protection, improving protection margins. Application: Low-current protection zones in commercial PV systems and rack-mounted power distributions.
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FAQs
The KWS-R-3 is a standard, compact fuse designed for typical electrical protection tasks. With a 5 in length and 0.81 in width/height, it fits many common panelboard and control cabinet spaces. It supports Class RK1 acceptance and matches standard Bussmann Series protection schemes, making retrofits and new builds straightforward in space-constrained enclosures.
The device carries a 3 A amperage rating and provides a 200 kAIC interrupt rating at 600 Vac. This combination enables robust fault clearing for PV inverters and distribution paths, while maintaining reliable protection in typical 600 V AC systems.
Yes. The KWS-R-3 is designed for PV systems, inverters, and panelboards, delivering fast-acting current interruption to protect PV strings and balance-of-system components. Its Class RK1 construction and high interrupt rating support reliable solar power protection in commercial and industrial deployments.
The KWS-R-3 is CE marked, indicating conformity with EU safety and performance standards. It is designed to fit Class RK1 protection schemes and is compatible with Bussmann Series specifications, helping users meet common regulatory and industry requirements in solar and electrical installations.
Using the KWS-R-3 can reduce downtime due to reliable, fast-acting protection and standardized parts catalog. Its compact form aids installation efficiency, while the standardized CE-marked design simplifies regulatory compliance and spare-parts stocking, delivering lower lifecycle costs over typical solar or industrial protection programs.