Eaton LPS-RK-400SPI Fuse - 600 VAC, 300 kAIC RK1
Part Number: LPS-RK-400SPI
Quick Summary
The Eaton LPS-RK-400SPI fuse provides reliable, time-delay protection for industrial electrical panels and motor drives. Managing startup surges and nuisance trips can derail uptime; this fuse helps balance protection with dependable operation. CE Marked compliance supports global deployment, while RK1 class and dual-element design enhance selectivity and safety. In practice, you gain easier maintenance, faster fault diagnosis, and optimized protection across 400 A feeders and 600 V systems.
Product Information
Extended Description
LPS-RK-400SPI Eaton: Eaton Bussmann Series Class RK1 fuse, LPS-RK, time-delay, dual-element, current limiting fuse, 400 A, indicating fuse, interrupting rating of 300 kA at 600 Vac
Product Name
Eaton Bussmann series LPS-RK fuse
Catalog Number
LPS-RK-400SPI
UPC
051712627436
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
400 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
Bussmann Full Line Catalog
Bussmann Full Line Catalog
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 design provides reliable fault clearance while tolerating inrush currents. Business Impact: reduces nuisance trips and protects equipment during motor startups, minimizing unplanned downtime. Application: ideal for motor drives, fans, and feeders in industrial panels. Feature: Current-limiting and high interrupt rating deliver rapid fault clearance without excessive heat buildup. Business Impact: improves safety and downstream conductor protection, enabling safe coordination in energy-rich circuits. Application: high-energy loads at 600 VAC, 400 A feeder circuits, and critical power distribution. Feature: Class RK1 fuse with blade-end connections standardizes the family, simplifies stocking, and speeds replacement. Business Impact: lowers maintenance time and inventory risk while promoting compatibility with Bussmann cataloges. Application: control cabinets and switchgear across manufacturing sites. Feature: Electrically isolated end caps and option for an indicating version ease servicing and fault location in dense panels. Business Impact: reduces downtime during maintenance cycles and improves diagnostics. Application: modern industrial cabinets and OEM assemblies. Feature: Standard packaging and defined form factor enable predictable space planning with 11.63 in length and 2.36 in width. Business Impact: supports efficient enclosure layouts and faster install times. Application: retrofit and new panel builds in industrial environments.
Get a Quick Quote for a Eaton LPS-RK-400SPI
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton LPS-RK-400SPI?
Enquire Now
FAQs
The LPS-RK-400SPI uses blade-end x blade-end connections and features an electrically isolated end cap for safe handling. With dimensions of 11.63 in length and 2.36 in width, it fits standard 400 A buswork and enclosure spaces. Its dual-element time-delay design supports 600 VAC operation and 300 kAIC interrupt capability, enabling reliable protection for motor drives and feeders.
This fuse is ideal for motor drives, feeders, and power distribution panels in manufacturing and process industries. The 400 A rating and 600 VAC rating align with common industrial feeders, while the 300 kAIC interrupt capacity ensures robust fault clearing. Its RK1 class and standard Bussmann family compatibility simplify integration into existing protection schemes.
Key specs include 400 A amperage rating, 600 VAC voltage rating, 300 kAIC interrupt rating, dual-element time-delay design, and current-limiting behavior. It is a Class RK1 fuse with blade-end connections and an option for an indicating version, providing reliable protection for both AC and DC sections in industrial controls.
Yes. The LPS-RK-400SPI supports both non-indicating and indicating fuse configurations. The indicating option simplifies fault location in live panels, while the non-indicating version can be used where indicators are provided separately. End caps remain electrically isolated to maintain safe replacement practices.
This fuse is CE marked, aligning with international electrical standards. Verify compatibility with Eaton Bussmann catalogs and ensure blade-end connections and enclosure clearances meet your panel design. For guidance on replacement intervals and coordination, consult the Bussmann RK1 data and the 70–600 A LPS RK1 time-delay data sheet (No. 1002) referenced in Eaton’s technical resources.