Eaton KWN-R-3 Fuse - Class RK1, 3 A, Non-indicating
Part Number: KWN-R-3
Quick Summary
Eaton KWN-R-3 fuse provides fast overcurrent protection for electrical panels and machine circuits. When panel designs include compact layouts or high-density wiring, reliable protection without nuisance trips is essential. This model leverages Class RK1 fast-acting performance to defend sensitive electronics while minimizing disruption from transient faults. Although the datasheet notes Not Applicable for warranty or compliance, your installation should align with regional standards such as CE or UL where required, and confirm with Eaton for current approvals. In practical terms, this fuse supports lean procurement and streamlined BOM management through a standard UPC and catalog number, delivering a dependable balance of protection, form factor, and total cost of ownership for automation projects.
Product Information
Extended Description
KWN-R-3 Eaton: Eaton Bussmann series KWN-R fuse, 3 A, Class RK1, Non-indicating, Standard
Product Name
Eaton Bussmann series KWN-R fuse
Catalog Number
KWN-R-3
UPC
051712407519
Product Length/Depth
2 in
Product Height
0.56 in
Product Width
0.56 in
Product Weight
0.4 lb
Warranty
Not Applicable
Compliances
Not Applicable
Amperage Rating
3 A
Packaging type
Standard
Class
Class RK1
Fuse indicator
Non-indicating
KWN-R-3~LIMITRON FAST ACTING FUSE
KWN-R-3~LIMITRON FAST ACTING FUSE
Bussmann series Fuseology
Eaton Specification Sheet - KWN-R-3
Compact form factor with a 2 in length and 0.56 in width reduces panel footprint and simplifies installation. This translates to lower housing costs per panel and faster maintenance trips during scheduled downtimes. It’s well suited for control cabinets in packaging lines or machine builders where space is at a premium. Class RK1 fast-acting design provides precise interruption during short-circuit events, protecting downstream electronics and minimizing arc energy. The business impact is reduced unscheduled downtime and improved equipment longevity. Typical applications include PLCs, sensors, and small motor control circuits where fast clearing is critical. A 3 A amperage rating aligns with low-current protection needs, guarding control circuits without nuisance tripping on startup surges. Non-indicating design reduces points of failure and simplifies integration with non-indicator or legacy panels. This combination favors maintenance teams looking for predictable behavior and lower spares inventory. Standard packaging and UPC 051712407519 enable straightforward BOM management and fast procurement processes. The 2 in length fuse is designed to fit standard RK1 fuse blocks, ensuring compatibility with existing Eaton Bussmann socket hardware and ease of replacement. Bussmann’s Limitron fast-acting family is widely used in automation for predictable protective margins, helping meet reliability targets and supporting regulatory expectations across regions where RK1 protection is specified.
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FAQs
KWN-R-3 is designed for standard RK1 fuse blocks and sockets. It fits frames and holders that accept a 2 inch long, 0.56 inch wide, non-indicating RK1 fuse. When selecting a holder, verify mounting style, blade contacts, and clearance to ensure reliable engagement and easy replacement during maintenance.
KWN-R-3 is rated at 3 A, fast-acting protection. This makes it suitable for low-current control circuits such as PLC inputs, sensors, and small motor control lines where fast fault clearing minimizes downtime and protects sensitive electronics in automation panels.
No. The KWN-R-3 is non-indicating, meaning it does not provide built-in visual status indication. For panels requiring status feedback, plan to use external indicators or monitoring hardware. Non-indicating design can simplify integration in legacy or minimalist panels while reducing potential failure points.
The datasheet notes Class RK1 and lists Not Applicable for warranty and compliance. For regional certifications such as CE or UL, please confirm with Eaton or local authorities. Select regions may require specific approvals, so validate approvals during design and procurement.
The fuse provides a clear catalog number KWN-R-3 and UPC 051712407519, enabling straightforward BOM tagging and inventory control. Its standard packaging simplifies stocking, reordering, and traceability across multiple sites, improving maintenance planning and reducing downtime during part replacements.