Eaton KWS-R-5 fuse - Class RK1, 200 kAIC, Fast-Acting
Part Number: KWS-R-5
Quick Summary
Eaton KWS-R-5 fuse provides fast overcurrent protection for PV systems, inverters, and panelboards. Engineers often face nuisance trips and lengthy maintenance windows, which this fuse helps minimize. With CE marking and a 200 kAIC interrupt rating at 600 V, it supports compliant, robust protection. The 5 A rating, RK1 class, and non-indicating design streamline installation in PV power electronics and distribution enclosures. Compact dimensions and standard packaging ease procurement and retrofit projects, delivering measurable uptime and reduced engineering rework. It's well suited for photovoltaic arrays, inverter assemblies, and panelboard feeders across commercial and industrial facilities. In practice, engineers report easier BOM alignment and faster QA sign-offs when using recognized RK1 fuses.
Product Information
Extended Description
KWS-R-5 Eaton: Eaton Bussmann series KWS-R fuse, Photovoltaic systems, Inverters, Panelboards, 5 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-5
UPC
051712580625
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
5 A
Interrupt rating
200 kAIC at 600 Vac
Voltage rating
600 V
Packaging type
Standard
Class
Class RK1
Fuse indicator
Non-indicating
KWS-R-5~LIMITRON FAST ACTING FUSE
KWS-R-5~LIMITRON FAST ACTING FUSE
Bussmann series Fuseology
Eaton Specification Sheet - KWS-R-5
Feature: 5 A rating paired with fast-acting response provides selective protection for delicate PV circuits. The business impact is reduced electrical stress on downstream components and fewer nuisance trips, translating to longer equipment life and lower maintenance costs. This is particularly valuable in PV strings, inverter connections, and panelboard feeders where precise current limiting preserves system uptime. Feature: 200 kAIC interrupt rating at 600 Vac offers robust fault-handling capability. The business impact is dependable protection even in high fault-current environments, reducing collateral damage and warranty exposure. Application in PV arrays, power electronics, and critical distribution panels ensures safety and reliability during transient faults. Feature: Class RK1 and non-indicating design provide standard protection with simple field service. The business impact is predictable coordination with upstream breakers and low maintenance because there are no indicator windows to monitor. Application in standard Bussmann holders and panelboard enclosures makes replacement straightforward during routine service intervals. Feature: CE marking confirms compliance with European safety and performance requirements. The business impact is reduced regulatory risk for international installations and easier cross-border procurement. Application across commercial and industrial solar projects where CE compliance is a gatekeeper for project approvals. Feature: Compact 5 in length and 0.81 in width support tight installations and easy retrofits. The business impact is lightweight BOM integration and lower enclosure footprint, saving material and labor costs. Application in crowded enclosures, compact switchgear, and retrofit panels where space is at a premium. Feature: Official Eaton catalogs and data sheets support fast procurement and engineering validation. The business impact is faster part quoting, accurate bill of materials, and reduced design iteration time. Application when sourcing in PV, electrical protection, and power management projects to meet project timelines.
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FAQs
To install the KWS-R-5, ensure the panel is designed for RK1 protection and has compatible Bussmann holders. Confirm the system voltage (600 V) and interrupt rating (200 kAIC) match your fault-current calculations. Remove power, verify clearances, insert the 5 A rated fuse into the designated fuse holder, and re-energize the circuit after confirming tight, secure seating and proper alignment with the bus. Always follow Eaton installation guidelines and local electrical codes.
Key specs include a 5 A amperage rating, 200 kAIC interrupt rating at 600 Vac, and a voltage rating of 600 V. It belongs to Class RK1 and is non-indicating, with a standard packaging type. The fuse is CE marked, designed for PV systems, inverters, and panelboards, and has a compact 5 in length and 0.81 in width footprint for easy mounting.
Yes. The KWS-R-5 is explicitly designed for photovoltaic systems, inverters, and panelboards, offering reliable protection for PV strings and distribution feeders. Its RK1 class and 200 kAIC rating support reliable coordination with upstream protection schemes in solar and power electronics installations, helping to minimize downtime and protect critical components.
The KWS-R-5 carries CE marking, indicating conformity with European safety and performance requirements. This certification supports cross-border solar deployments and ensures that the fuse meets essential regulatory standards for electrical protection components used in commercial and industrial applications.
Official Eaton documentation is available through the Eaton website and Bussmann catalogs. Look for the KWS-R-5 specification sheet and full-line catalogs, which provide wiring, mounting, and compatibility details, plus installation guidance. This support accelerates BOM creation, enables accurate quoting, and streamlines engineering reviews for PV and industrial protection projects.