Eaton KWS-R-10 Fuse - RK1 Class, 200 kAIC, 600V
Part Number: KWS-R-10
Quick Summary
The Eaton KWS-R-10 fuse is a fast-acting protective device for photovoltaic systems, inverters, and panelboards. Engineers often struggle to balance reliable fault interruption with a compact footprint and straightforward procurement. This model carries CE marking, the RK1 Class designation, and a 200 kAIC interrupt rating at 600 Vac, delivering robust protection for solar and AC power distributions. Its small form factor and standard packaging simplify installation, reduce spare-parts inventories, and accelerate project timelines for protective-device upgrades and new builds. For procurement teams, the KWS-R-10's 10 A rating aligns with common PV string protections, while its CE compliance supports global deployments. In short, it combines technical rigor with practical value for engineering teams and maintenance crews.
Product Information
Extended Description
KWS-R-10 Eaton: Eaton Bussmann series KWS-R fuse, Photovoltaic systems, Inverters, Panelboards, 10 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-10
UPC
051712658768
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
10 A
Interrupt rating
200 kAIC at 600 Vac
Voltage rating
600 V
Packaging type
Standard
Class
Class RK1
Fuse indicator
Non-indicating
KWS-R-10~LIMITRON FAST ACTING FUSE
KWS-R-10~LIMITRON FAST ACTING FUSE
Bussmann series Fuseology
Eaton Specification Sheet - KWS-R-10
Feature: 10 A amperage rating enables targeted protection for typical PV distribution circuits. Business impact: this reduces nuisance trips and extends module life by avoiding overcurrent on non-critical paths. Application: ideal for PV arrays, string combiner panels, and downstream inverters in commercial installations. Feature: 200 kAIC interrupt rating at 600 Vac. Business impact: delivers dependable fault-current interruption in high-energy environments, reducing equipment damage and downtime. Application: main feeders, panelboards, and solar inverters in rooftop and ground-mounted PV systems. Feature: Class RK1, non-indicating design. Business impact: simplifies replacement logistics and keeps costs predictable by avoiding indicator components. Application: standard fuse blocks and Bussmann-series holders in control panels and electrical rooms. Feature: Compact footprint of 5 in length and 0.81 in square, weight 0.13 lb. Business impact: enables easier installation in crowded enclosures, saves panel depth, and reduces overall hardware requirements. Application: space-constrained electrical cabinets and equipment racks in industrial facilities. Feature: CE marking and standard packaging. Business impact: ensures regulatory compliance across markets and streamlines procurement with consistent lot-and-packaging quality. Application: global solar projects, OEM electrical assemblies, and service operations. Feature: Broad compatibility with Eaton Bussmann series KWS-R-10, catalog number, 10 A, and 600 V rating. Business impact: provides familiar, readily available spares and fast replacements, improving maintenance ROI. Application: integration into existing electrical protection schemes on PV, panelboard, and inverter lines.
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FAQs
The KWS-R-10 delivers a precise 10 A protection level with a high 200 kAIC interrupt rating at 600 Vac, designed for PV inverters, strings, and panelboards. Its RK1 classification and CE marking ensure regulatory alignment, while its compact 5 in length fits tight electrical enclosures commonly found in solar retrofit and new-build projects.
A 200 kAIC interrupt rating means the fuse is capable of safely interrupting large fault currents without causing cascading damage to panelboards or inverters. This level of protection is crucial in PV power distribution where surge and fault currents can be substantial, helping maintain system uptime and prolong equipment life.
Yes. The KWS-R-10 uses the standard Bussmann RK1 form factor and packaging, enabling straightforward replacement in existing enclosures. With a 5 in length and 0.81 in square cross-section, it pairs well with common fuse blocks, simplifying stocking and maintenance workflows for service teams.
Install in properly rated fuse holders within PV inverters, panelboards, or distribution panels. Ensure the circuit current does not exceed 10 A and that wiring is secured according to manufacturer guidelines. The fuse’s compact footprint helps when space is limited, and its standard packaging aids quick field replacement.
The KWS-R-10 carries CE Marking for European markets and is designed as a Class RK1 non-indicating fuse. Its 600 V rating and 600 Vac interrupt specifications align with common global PV and electrical distribution standards, supporting consistent protection across international installations.