Eaton LPS-RK-350SPI Fuse - CE Marked RK1 Current-Limiting
Part Number: LPS-RK-350SPI
Quick Summary
Eaton LPS-RK-350SPI fuse provides time-delay, current-limiting protection for industrial feeders and motor loads. If nuisance trips and downtime slow progress, this device helps maintain uptime by offering selective protection and fast fault response. CE Marking ensures compliance, while the RK1 class construction and electrically isolated end caps enhance reliability in demanding environments. RoHS information is available through Eaton’s RoHS Search Tool, reinforcing material compliance. This fuse also supports flexible installation with blade-end connections and a choice of indicator options, aligning with standard Bussmann RK1 families for scalable protection across panels and MCCs.
Product Information
Extended Description
LPS-RK-350SPI Eaton: Eaton Bussmann Series Class RK1 fuse, LPS-RK, time-delay, dual-element, current limiting fuse, 350 A, indicating fuse, interrupting rating of 300 kA at 600 Vac
Product Name
Eaton Bussmann series LPS-RK fuse
Catalog Number
LPS-RK-350SPI
UPC
051712627429
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
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 With Indicator
Quantity
1
Special features
Electrically isolated end cap
Low Voltage Branch Circuit Fuse Chapter
Low Voltage Branch Circuit Fuse Chapter
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: Time-delay, dual-element, current-limiting design → Business Impact: Reduces nuisance tripping and arc energy during motor inrush, improving equipment availability and extending component life → Application: Ideal for 600 Vac feeders and motor control circuits in industrial environments. Feature: High interrupt rating of 300 kAIC at 600 Vac (and 100 kAIC at 300 Vdc) → Business Impact: Provides robust fault protection in high-energy systems, lowering downstream damage and maintenance costs → Application: Critical circuits in switchgear, drive systems, and power distribution panels. Feature: Class RK1 fuse with blade end x blade end connections → Business Impact: Easy retrofit and seamless integration with standard Bussmann RK1 assemblies, reducing install time and error → Application: Panelboards and MCCs requiring proven RK1 protection. Feature: Electrically isolated end cap and option for indication → Business Impact: Safer replacements and clearer health status monitoring, minimizing risk during maintenance → Application: Industrial automation racks where quick fault identification speeds repair. Feature: 11.63 in length, 2.36 in width, 2.36 in height, and 4.6 lb weight with standard packaging → Business Impact: Predictable form factor supports efficient enclosure planning and logistics → Application: Field-ready protection for large motor feeders and robust distribution layouts.
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FAQs
The LPS-RK-350SPI uses blade end x blade end connections designed for standard RK1 panels. Ensure the circuit is de-energized, align with the blade terminals, and secure with the compatible end caps. Use the electrically isolated end cap option if you require enhanced safety during replacement. The non-indicating or indicator variant can help confirm status during routine maintenance.
This fuse is rated for 350 A with a voltage rating of 600 Vac (and 300 Vdc). It offers an interrupt rating of 300 kAIC at 600 Vac and 100 kAIC at 300 Vdc, with time-delay, dual-element construction to manage inrush while protecting downstream equipment.
Yes. Its time-delay, current-limiting design is well-suited for motor feeders and motor control centers. The RK1 class and robust interrupt rating help coordinate protection in drive and motor circuits, reducing nuisance trips and providing reliable fault isolation in industrial environments.
The LPS-RK-350SPI is CE Marked, aligning with European safety and performance requirements. It follows the Class RK1 fuse designation, ensuring compatibility with Bussmann RK1 protection schemes. RoHS information is available through Eaton’s RoHS Search Tool for material compliance context.
The combination of high interrupt ratings, clear status indication options, and easy blade-end installation reduces downtime during maintenance and replacement. These features help lower total cost of ownership by limiting arc energy, enabling quicker fault isolation, and supporting longer service intervals in high-energy industrial facilities.