Eaton KWS-R-1 Fuse - Class RK1, 200 kAIC at 600 Vac
Part Number: KWS-R-1
Quick Summary
Eaton Bussmann KWS-R-1 fuse provides fast-acting overcurrent protection for photovoltaic systems and electrical panelboards. Engineers often face nuisance trips or insufficient interrupt capability when selecting fuses for inverters, risking downtime and equipment damage. The device is CE marked and classified as RK1, with a 200 kAIC interrupt rating at 600 V, ensuring reliable protection in high-energy PV installations. With a compact 5 in length and slim 0.81 in profile, it fits standard enclosures and supports scalable protection for PV arrays, inverters, and panelboards. Industry-wide, it helps engineers meet safety standards while reducing system-wide maintenance costs.
Product Information
Extended Description
KWS-R-1 Eaton: Eaton Bussmann series KWS-R fuse, Photovoltaic systems, Inverters, Panelboards, 1 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-1
UPC
051712658737
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
1 A
Interrupt rating
200 kAIC at 600 Vac
Voltage rating
600 V
Packaging type
Standard
Class
Class RK1
Fuse indicator
Non-indicating
KWS-R-1~LIMITRON FAST ACTING FUSE
KWS-R-1~LIMITRON FAST ACTING FUSE
Bussmann series Fuseology
Eaton Specification Sheet - KWS-R-1
1 A fast-acting fuse delivers precise overload protection. By quickly isolating faulted circuits, downtime is minimized and inverter damage is reduced in PV systems and panelboards. High interrupt rating of 200 kAIC at 600 Vac provides robust fault tolerance for high-energy PV strings, inverters, and service feeders, supporting safe startup and reliable shutdown. Non-indicating design simplifies installation in cramped enclosures and harsh environments, reducing misleading indicators and enabling straightforward testing and maintenance. CE marking and RK1 classification ensure regulatory acceptance and standardized protection across European and global deployments, enhancing compliance without compromising performance. The five-inch length and standard Bussmann packaging enable easy integration into existing fuse blocks, while the lightweight 0.13 lb helps optimize enclosure space in multi-fuse assemblies. Overall, the KWS-R-1 supports scalable protection, predictable maintenance cycles, and streamlined procurement for PV projects and panelboard designs.
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FAQs
Yes. The KWS-R-1 is a 1 A, Class RK1, fast-acting fuse designed for use in standard Bussmann panelboard assemblies and PV inverter protection schemes. Its 5 in length and 0.81 in cross-section align with common fuse blocks, enabling straightforward retrofits and scalable protection in solar installations.
Key specs include a 1 A amperage rating, 200 kAIC interrupt rating at 600 Vac, 600 V voltage rating, CE marking, RK1 class, non-indicating fuse, and standard packaging. This combination delivers reliable protection for PV inverters and panelboards while meeting European safety requirements.
The KWS-R-1 is ideal for photovoltaic systems, PV inverters, and electrical panelboards in industrial and commercial installations. Its high interrupt rating at 600 Vac and RK1 classification support protection in high-energy DC/AC interfaces common to solar arrays, energy storage, and distribution panels.
The KWS-R-1 carries CE marking, indicating compliance with applicable European safety and performance standards. It is classified as RK1 for general purpose protection, making it suitable for cross-border deployments within CE regions and aligning with standard electrical protection practices.
The non-indicating design reduces false indicators in rugged environments, simplifying maintenance planning. Its reliable 200 kAIC interrupt rating minimizes risk of catastrophic failure in faults, lowering downtime costs. Weight and footprint support easy installation in crowded enclosures, enabling scalable protection strategies that improve uptime and asset longevity.