Eaton LPS-RK-6-1/4SPI Fuse - Class RK1, 600Vac CE Marked
Part Number: LPS-RK-6-1/4SPI
Quick Summary
The Eaton LPS-RK-6-1/4SPI fuse provides reliable time-delay protection for motor drives and panel circuits. Nuisance trips during motor startup and the challenge of selecting a fuse that withstands inrush without compromising safety are common frustrations. This device carries Class RK1 certification, CE Marking, and a 600 Vac rating with a 300 kAIC interrupting capability, aligning with common industrial standards. Designed for Bussmann series compatibility, its dual-element design and current-limiting performance help reduce downtime while simplifying maintenance and stocking. For engineers and procurement teams, it combines reliable protection with straightforward installation and available documentation. It also supports compliance reporting through catalogs and datasheets.
Product Information
Extended Description
LPS-RK-6-1/4SPI Eaton: Eaton Bussmann Series Class RK1 fuse, LPS-RK, time-delay, dual-element, current limiting fuse, 6.25 A, indicating fuse, interrupting rating of 300 kA at 600 Vac
Product Name
Eaton Bussmann series LPS-RK fuse
Catalog Number
LPS-RK-6-1/4SPI
UPC
051712628433
Product Length/Depth
5 in
Product Height
0.81 in
Product Width
0.81 in
Product Weight
1.6 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
6.25A
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
Fuse indicator
Non-indicating With Indicator
Quantity
10
Special features
Electrically isolated end cap
Bussmann Full Line Catalog
Bussmann Full Line Catalog
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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 design delivers consistent protection through motor inrush and startup surges. Impact: reduces nuisance trips and protects downstream electronics, boosting line uptime. Application: ideal for motor starters, drives, and feeder circuits in packaging, material handling, and process automation.Feature: Current-limiting action with a 6.25A rating limits fault energy. Impact: minimizes arc exposure and equipment damage, helping you meet safety and reliability targets. Application: suited for control power circuits and small to mid-size feeders in automated lines.Feature: 600 Vac and 300 Vdc voltage ratings with a 300 kAIC interrupt rating at 600 Vac. Impact: delivers fast, clean interruption for high-energy faults, improving panel protection. Application: suitable for MCCs, switchgear, and controller panels in industrial facilities.Feature: Dual elements with an electrically isolated end cap for safe installation and servicing. Impact: reduces risk during replacement and simplifies field maintenance. Application: helps technicians service on busy production floors without the risk of cross-contact.Feature: CE Marked and Class RK1 compliant with Bussmann series catalogs and data sheets. Impact: supports compliance documentation and procurement consistency, easing audits. Application: widely used in European and global plants, with ready access to official datasheets and compatibility notes.
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FAQs
This fuse is designed for standard Bussmann series holders and 5 inch, 0.81 inch by 0.81 inch form factors. It fits common industrial fuse blocks used in motor starters, drives, and feeder circuits, making it compatible with typical control panels and MCCs in automation environments.
Key ratings include 6.25 A amperage, 600 Vac and 300 Vdc voltage ratings, and an interrupt rating of 300 kAIC at 600 Vac (also 100 kAIC at 300 Vdc). It features a time-delay, dual-element design with a 10 second response at 500% overload.
The time-delay characteristic tolerates inrush currents from motors and drives, reducing nuisance trips while still providing fast fault interruption. The dual-element construction increases reliability under fault conditions, protecting downstream electronics and extending equipment life.
Yes, the LPS-RK-6-1/4SPI is CE Marked and falls under Class RK1 protection. This supports compliance in European installations and aligns with global practices for industrial fuses used in control panels and power distribution.
Benefits include reduced downtime from nuisance trips, safer servicing due to an electrically isolated end cap, and simplified stocking with a standard 5 in length. Combined with the documented datasheets and catalogs, maintenance planning becomes more predictable and procurement more efficient.