Eaton LPS-RK-2-1/2SP Fuse - Class RK1, Time-Delay 2.5 A
Part Number: LPS-RK-2-1/2SP
Quick Summary
The Eaton LPS-RK-2-1/2SP fuse is a time-delay protector for control panels and motor circuits. Nuisance trips during startup and surge events can stall production; this device tolerates brief overloads while still delivering robust short-circuit protection. CE marking and Class RK1 construction provide global compliance and reliable protection in industrial environments, while its current-limiting profile helps protect downstream components. Designed for straightforward integration into standard Bussmann RK1 families, it supports scalable protection across small to mid-size control systems, helping reduce unplanned downtime and maintenance costs. In short, it combines dependable protection with practical, field-friendly installation for industrial controls and circuit protection workflows.
Product Information
Extended Description
LPS-RK-2-1/2SP Eaton: Eaton Bussmann Series Class RK1 fuse, LPS-RK, time-delay, dual-element, current limiting fuse, 2.5 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-2-1/2SP
UPC
051712548168
EAN
5027590150729
Product Length/Depth
5 in
Product Height
0.81 in
Product Width
0.81 in
Product Weight
0.17 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
2.5 A
Interrupt rating
300 kAIC at 600 Vac 100 kAIC at 300 Vdc
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
Quantity
10
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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 design protects against transient inrush while delivering current-limiting short-circuit protection. Business Impact: Reduces nuisance trips and equipment wear, extending motor and circuit life in demanding environments. Application: Motor starters and control circuits where startup surges are common, such as conveyors and pumps. Feature: High interrupt rating at 600 Vac and 300 Vdc (300 kAIC / 100 kAIC) ensures robust fault clearance. Business Impact: Safeguards wiring and panels from catastrophic faults, lowering outage risk and repair costs. Application: Power distribution in industrial facilities with mixed AC/DC loads. Feature: 2.5 A rating for precise protection in small control circuits. Business Impact: Optimizes fuse selection to prevent nuisance shuts while preserving protection. Application: Control panels, feeders, and PLC subsystems. Feature: Ferrule end x ferrule end connections support quick, secure installations. Business Impact: Reduces commissioning time and improves reliability in panel builds. Application: OEM assemblies and retrofit projects. Feature: Compact form factor (5 in L, ~0.81 in W/H) and standard packaging (10 per pack) aid space planning and stocking. Business Impact: Streamlines inventory management and spare-part readiness. Application: Field service, distributors, and maintenance teams.
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FAQs
Installers should note the ferrule end to ferrule end connection and the dual-element, time-delay construction. The fuse length is 5 inches, with compact 0.81 inch width and height, so plan for a dedicated, accessible slot in standard RK1 panel layouts. Use proper crimp tools for ferrule ends and ensure compatible Bussmann RK1 family devices are in use for predictable performance. Ensure the panel is rated for 600 Vac/300 Vdc and that wiring practices meet local codes. This approach minimizes start-up surges and ensures reliable protection across channels.
The time-delay, dual-element design accommodates brief overloads typical of motor start-ups, allowing normal inrush without tripping. This reduces nuisance shutdowns while maintaining current-limiting protection against short circuits. With a 2.5 A rating and a 600 Vac/300 Vdc operating range, it protects both small control circuits and motor-related power feeds without compromising uptime in conveyors, pumps, or fans.
Yes. The LPS-RK-2-1/2SP is rated for 600 Vac and 300 Vdc, making it suitable for mixed AC/DC environments common in industrial control panels. Its high interrupt ratings (300 kAIC at 600 Vac and 100 kAIC at 300 Vdc) ensure robust fault clearance. For DC systems, verify that wiring, insulation, and enclosure ratings align with the higher fault energies typical of DC faults.
This fuse features CE marking, aligning with European safety standards. It belongs to the Class RK1 protection family, a widely adopted standard for motor and control circuit fuses. While UL/CSA listings are not indicated in the provided data, CE compliance and RK1-class protection provide strong baseline regulatory alignment for many international electrical installations.
The LPS-RK-2-1/2SP supports longer continuous operation during surges and reduces unexpected outages, lowering downtime costs. Its stock-friendly packaging (10 per pack) and ferrule-end installation streamline field replacement and technician efficiency. The combination of reliable protection, minimized nuisance trips, and straightforward installation translates to lower maintenance labor costs and improved system availability.