Eaton RK1SK-39 Fuse - Class RK1, 250/600 V Non-Indicating
Part Number: RK1SK-39
Quick Summary
The Eaton RK1SK-39 fuse provides reliable Class RK1 protection for premium branch circuits in electrical panels. Engineers often contend with nuisance trips and protection gaps in high-availability systems. In practice, devices like this are evaluated for CE conformity, IP enclosure protection where applicable, and SIL safety considerations. With 250/600 V ratings and compatibility with the Bussmann RK1 family, it simplifies procurement and panel design. Choosing RK1SK-39 can reduce downtime and streamline maintenance planning across builds. Class RK1 fuse discussions, 250 V rating, and standard packaging appear naturally in technical talks, underscoring value across automation and electrical distribution projects.
Product Information
Extended Description
RK1SK-39 Eaton: Eaton Bussmann series RK1SK fuse, Premium branch circuit, Class RK1, Non-indicating, Standard, 250 V, 600 V
Product Name
Eaton Bussmann series RK1SK fuse
Catalog Number
RK1SK-39
UPC
051712630092
Product Length/Depth
0.001 in
Product Height
0.001 in
Product Width
0.001 in
Product Weight
9.45 lb
Warranty
Not Applicable
Compliances
Not Applicable
Voltage rating
250 V, 600 V
Packaging type
Standard
Class
Class RK1
Fuse indicator
Non-indicating
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Eaton Specification Sheet - RK1SK-39
Feature: Class RK1 fuse design provides targeted protection for premium branch circuits. Business impact: fast, predictable opening during overcurrent events reduces downstream equipment damage and unplanned downtime. Application: suitable for industrial control panels, motor drives, and power distribution units where reliable short-circuit protection is critical. Feature: voltage ratings of 250 V and 600 V support a wide range of equipment from light automation to higher-power drives. Business impact: designers can standardize on a single fuse family across multi-voltage installations, lowering stocking costs and simplifying testing. Application: new builds and retrofits in factories and processing lines benefit from a common RK1 solution. Feature: standard packaging and a standard product footprint streamline procurement and logistics. Business impact: reduced lead times and supplier variance improve project timelines and inventory accuracy. Application: OEMs and distributors can rely on consistent sizing and labeling when integrating RK1SK-39 into cabinets and enclosures. Feature: non-indicating fuse indicator minimizes false indications in complex panel architectures; paired with appropriate indicators elsewhere, it prevents misleading status checks. Business impact: faster maintenance decisions and cleaner panel aesthetics. Application: critical line protection in process automation and packaging lines where indicators are monitored remotely. Feature: falls under Eaton Bussmann RK1 family with compatible form factor and cross-reference potential. Business impact: technicians can source replacements quickly and minimize downtime during spare-part shortages. Application: service and OEM programs across automation and electrical distribution benefit from streamlined component mapping and consistent performance. Industry context and objections: Some buyers worry about cost vs. performance; RK1SK-39 offers robust protection with familiar RK1 series; partner with Eaton datasheets to verify regulatory compliance; installation is straightforward in standard RK1 mounting.
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FAQs
Installation follows the RK1 family mounting procedures: ensure the holder is rated for 250/600 V, insert the RK1SK-39 with proper alignment, and secure with the holder’s retention mechanism. Always de-energize the panel before replacement to prevent arc flash and verify system continuity after installation.
The RK1SK-39 is rated for 250 V and 600 V operation under Class RK1 protection. It is a non-indicating, standard-packaged fuse designed for premium branch circuits in control panels and power distribution units, enabling reliable overcurrent protection.
Yes. With dual voltage ratings of 250 V and 600 V, the RK1SK-39 supports mixed-volt installations common in industrial automation, motor drives, and process equipment, simplifying spare parts and stocking by using a single RK1 fuse family.
The data set notes not-applicable compliance for this specific item. In practice, devices of this type are evaluated for CE conformity, IP enclosure protection, and SIL safety considerations per project requirements. Always consult the official Eaton datasheet for formal approvals relevant to your region and application.
Using RK1SK-39 standardizes protection across voltage levels, reducing spare-part diversity and procurement lead times. This can lower inventory costs, shorten maintenance outages, and improve panel uptime in automation and electrical distribution projects.