Eaton LPS-RK-350SP Fuse - Class RK1 350A 600Vac RoHS
Part Number: LPS-RK-350SP
Quick Summary
The Eaton LPS-RK-350SP fuse protects industrial power circuits with time-delay, current-limiting action. Engineers often face nuisance trips during motor starts or unexpected outages when selecting protective devices for high-current loads. This Class RK1 fuse delivers reliable coordination with downstream breakers while maintaining fast interruption when needed. It is CE Marked and RoHS compliant, aligning with regulatory and supply-chain requirements. The LPS-RK-350SP combines dual-element protection with a 350 A rating and a 600 Vac/300 Vdc voltage profile, supporting both AC drives and DC control circuits. Its standardized blade-end connections simplify field replacement, keeping downtime to a minimum and helping you meet uptime KPIs.
Product Information
Extended Description
LPS-RK-350SP Eaton: Eaton Bussmann Series Class RK1 fuse, LPS-RK, time-delay, dual-element, current limiting fuse, 350 A, non-indicating fuse, interrupting rating of 300 kA at 600 Vac and 100 kA at 300 Vdc
Product Name
Eaton Bussmann series LPS-RK fuse
Catalog Number
LPS-RK-350SP
UPC
051712548540
Product Length/Depth
11.63 in
Product Height
2.36 in
Product Width
2.36 in
Product Weight
4.6 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Amperage Rating
350 A
Interrupt rating
100 kAIC at 300 Vdc 300 kAIC at 600 Vac
Voltage rating
600 Vac, 300 Vdc
Fuse type
Time delay Current-limiting
Number of elements
Dual
Packaging type
Standard
Class
Class RK1
Connection
Blade end x blade end
Fuse indicator
Non-indicating
Quantity
1
Special features
Electrically isolated end cap
Bussmann Full Line Catalog
Bussmann Full Line Catalog
RoHS Search Tool
Bussmann series Fuseology
Bussmann series Low-Peak 600 V LPS Class RK1 time-delay fuses, 70-600 A data sheet no. 1002
Feature → Business Impact → Application: The LPS-RK-350SP is a time-delay, dual-element, current-limiting fuse that handles inrush and surge currents without nuisance tripping, improving equipment uptime and reducing unplanned maintenance in motor-start applications. This leads to shorter downtime and predictable performance in drives and feeders. Feature → Business Impact → Application: With a Class RK1 designation and high interrupt ratings (300 kAIC at 600 Vac, 100 kAIC at 300 Vdc), it provides selective coordination and robust fault protection, enabling safer power distribution in panels and switchgear. Feature → Business Impact → Application: The blade-end x blade-end connections and electrically isolated end caps simplify installation and field swapping, reducing wiring errors and improving serviceability in control cabinets. Feature → Business Impact → Application: Compliance with CE and RoHS ensures regulatory alignment and supply-chain resilience for international projects, while the 11.63 in length and 4.6 lb weight offer a durable, space-conscious form factor suitable for compact enclosures. Feature → Business Impact → Application: The non-indicating design minimizes maintenance needs, while the dual-element design supports longer life and reduced replacement costs in high-load environments.
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FAQs
The LPS-RK-350SP offers a 350 A amperage rating with a 600 Vac maximum voltage rating, plus a 300 kAIC interrupt rating at 600 Vac. Its Class RK1 design delivers reliable coordination with upstream protective devices, ensuring selective fault clearing and reduced risk of widespread outages in industrial panels.
The dual-element construction provides inrush current tolerance during motor startups while still delivering rapid interruption under fault conditions. This reduces nuisance trips during startup, improves process reliability, and extends motor life by preventing overcurrent damage. The time-delay characteristic is ideal for drives and pump applications with brief inrush surges.
Best suited for motor drive feeders, power distribution blocks, and control panels in automation systems, the LPS-RK-350SP supports both AC and DC circuits (600 Vac / 300 Vdc) and accommodates dual-element protection in RK1-coordinated architectures, enabling safe, continuous operation in harsh industrial environments.
The fuse is CE Marked and RoHS Compliant, meeting international regulatory requirements for electrical safety and restricted hazardous substances. This compliance supports global deployments and helps sustain supply chains across multiple regions and customers.
With blade end x blade end connections and electrically isolated end caps, installation is straightforward and reduces cross-wiring risks in panels. The non-indicating design minimizes routine maintenance, while its robust 11.63 in length and 4.6 lb weight offer a durable solution for fixed installations in crowded enclosures.