Eaton LPS-RK-45SPI fuse - Class RK1 Time-Delay, 300 kAIC at 600 VAC
Part Number: LPS-RK-45SPI
Quick Summary
The Eaton LPS-RK-45SPI fuse delivers time-delay, current-limiting protection for industrial power circuits and control panels. Engineers often struggle with nuisance trips during motor inrush or selecting an interrupt rating that matches system requirements. This model carries CE marking and aligns with Class RK1 standards, offering reliable protection while simplifying procurement and replacement. With a 45 A rating and 600 VAC capability, it supports durable protection in harsh industrial environments, and complements standard Bussmann RK1 solutions for efficient panel design and maintenance.
Product Information
Extended Description
LPS-RK-45SPI Eaton: Eaton Bussmann Series Class RK1 fuse, LPS-RK, time-delay, dual-element, current limiting fuse, 45 A, indicating fuse, interrupting rating of 300 kA at 600 Vac
Product Name
Eaton Bussmann series LPS-RK fuse
Catalog Number
LPS-RK-45SPI
UPC
051712626286
Product Length/Depth
5.5 in
Product Height
1.06 in
Product Width
1.06 in
Product Weight
2.6 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
45 A
Interrupt rating
100 kAIC at 300 Vdc 300 kAIC at 600 Vac
Response time
10 sec at 500%
Voltage rating
600 Vac, 300 Vdc
Fuse type
Time delay Current-limiting
Number of elements
Dual
Packaging type
Standard
Class
Class RK1
Connection
Ferrule end x ferrule end
Fuse indicator
Non-indicating With Indicator
Quantity
10
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, up to 600 A data sheet no. 1001
Feature: Time-delay, dual-element, current-limiting design handles motor inrush while preserving fast fault clearance. Business Impact: Diminishes nuisance trips and protects downstream equipment, translating to higher overall line uptime. Application: Ideal for motor starters, conveyors, and power distribution panels in manufacturing facilities. Feature: 45 A amperage rating and 600 VAC voltage rating provide robust protection across industrial control circuits. Business Impact: Supports safe operation of common industrial voltages while delivering reliable interruption performance. Application: Suitable for control panels and feeder circuits in process lines and packaging equipment. Feature: Interrupt rating of 300 kAIC at 600 VAC (and 100 kAIC at 300 VDC) for fast, decisive fault clearing. Business Impact: Protects feeders and machines from high-energy faults, reducing collateral damage and downtime. Application: Main feeders and distributed power architectures in heavy industrial environments. Feature: Class RK1 designation and ferrule-end connections with electrically isolated end caps. Business Impact: Streamlines sourcing and installation; reduces risk of end-cap arcing and accidental contact. Application: Replacement in RK1-compatible circuits and panel assemblies with safer servicing. Feature: Indicator option for fuse status and standard packaging of 10 pieces. Business Impact: Facilitates proactive maintenance and easier stocking for service teams. Application: Panels requiring quick status checks and consistent replenishment. Feature: CE compliance and Bussmann RK1 lineage support global deployments. Business Impact: Enhances audit readiness and cross-border installations. Application: Multinational manufacturing facilities and service providers seeking standard protection platform.
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FAQs
The LPS-RK-45SPI uses ferrule-end connections and electrically isolated end caps, which simplify panel mounting and reduce the risk of arcing during maintenance. Ensure correct ferrule termination and adherence to Class RK1 replacement practices, and verify a 600 VAC operating environment to maintain the specified interrupt rating. Use standard 5.5 inch length for consistent fit in RK1-compatible enclosures.
The 45 A amperage rating combined with a 600 VAC voltage rating provides robust protection for common industrial controls and motor starters, while accommodating startup inrush without compromising safety. This rating supports reliable interruption of faults up to 300 kAIC at 600 VAC, reducing nuisance trips yet delivering quick fault clearance when needed.
The LPS-RK-45SPI carries CE marking, indicating conformity with applicable European safety and performance requirements. It belongs to the Class RK1 family, ensuring compatibility with Bussmann RK1 devices. For full compliance planning, reference the Low Voltage Branch Circuit Fuse chapters in Eaton catalogs and confirm any site-specific RoHS considerations as part of your procurement workflow.
A 300 kAIC interrupt rating at 600 VAC enables safe interruption of high-energy faults without damaging upstream equipment, protecting feeders and motors from catastrophic failures. This capability is especially valuable in power distribution panels and machine assemblies with elevated fault currents, helping to minimize downtime and repair costs.
When upgrading, verify the existing fuse type is Class RK1 and that the end-cap and ferrule dimensions match your panel design. The LPS-RK-45SPI’s 5.5 in length and ferrule-end connections support straightforward replacement, while its 45 A/600 VAC ratings align with typical industrial control circuits. Plan for a stock of 10-piece packs to simplify maintenance cycles.