Eaton LPS-RK-90SPI Fuse - 300 kAIC at 600 Vac
Part Number: LPS-RK-90SPI
Quick Summary
LPS-RK-90SPI fuse from Eaton Bussmann provides reliable time-delay protection for motor and power-distribution circuits. Inrush currents and nuisance trips can disrupt production and extend downtime, making selective protection essential. This CE-marked solution offers Class RK1 protection with dual-element current-limiting capability to balance fast fault clearing with tolerance for short-term surge. By combining proven reliability with a compact, blade-end design, it supports easy installation in established panels while helping reduce maintenance costs. For engineers seeking robust protection in industrial environments, this fuse delivers strong performance for motor controls and branch circuits alike.
Product Information
Extended Description
LPS-RK-90SPI Eaton: Eaton Bussmann Series Class RK1 fuse, LPS-RK, time-delay, dual-element, current limiting fuse, 90 A, indicating fuse, interrupting rating of 300 kA at 600 Vac
Product Name
Eaton Bussmann series LPS-RK fuse
Catalog Number
LPS-RK-90SPI
UPC
051712626552
Product Length/Depth
7.88 in
Product Height
1.11 in
Product Width
1.11 in
Product Weight
4 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
90 A
Interrupt rating
300 kAIC at 600 Vac 100 kAIC at 300 Vdc
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
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Bussmann Full Line Catalog
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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. Benefit: Tolerates harmless inrush while quickly clearing faults, reducing nuisance trips and downtime in motor drives and distribution panels. Application: Suitable for panel boards and motor control centers in manufacturing environments. Feature: High interrupt rating of 300 kAIC at 600 Vac. Benefit: Enhanced safety and reduced arc-flash risk during short circuits, allowing more robust protection for heavy equipment and power feeds. Application: Industrial machinery, conveyors, and service entrances where high fault currents may occur. Feature: 90 A rating with dual elements. Benefit: Precise coordination with downstream protectors and improved selective protection in multi-fuse assemblies. Application: Distribution blocks and feeder circuits in control panels. Feature: Blade end x blade end connections with electrically isolated end caps. Benefit: Quick, clean installation and safer maintenance with reduced risk of contact.Application: Field installs in standard enclosures with straightforward replacement. Feature: CE Marked compliance and RK1 class designation. Benefit: Regulatory alignment for European markets and standardized protection across assemblies. Application: OEM panel builds and upgrade projects requiring compliant, reliable fusing.
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FAQs
LPS-RK-90SPI uses blade end x blade end connections and measures 7.88 in long with a width and height of 1.11 in. It is available in standard packaging and can be configured with either a non-indicating or indicating fuse end-cap for diagnostic visibility, enabling quicker fault tracing during maintenance.
The fuse provides a 90 A amperage rating with a 600 Vac voltage rating and 300 kAIC interrupt rating at 600 Vac (and 100 kAIC at 300 Vdc). It is a time-delay, dual-element, current-limiting device designed for reliable protection in dynamic load scenarios.
Yes. Its time-delay characteristic accommodates motor inrush while its 300 kAIC interrupt rating at 600 Vac offers strong short-circuit protection. The dual-element design improves reliability in motor control centers and panel boards commonly used in manufacturing and processing facilities.
The LPS-RK-90SPI is CE Marked, indicating compliance with European safety and performance standards. It is classified as Class RK1 protection, aligning with industry fuse standards for reliable overcurrent protection in commercial and industrial panels.
The fuse's robust interrupt rating and time-delay design reduce nuisance trips, improving uptime in critical equipment. Its standard blade-end design simplifies replacements, while the option for indicating end caps aids diagnostics, helping maintenance teams quickly verify status and minimize downtime.