Eaton LPS-RK-4SP Fuse - Class RK1, 600 Vac
Part Number: LPS-RK-4SP
Quick Summary
The Eaton LPS-RK-4SP fuse delivers Class RK1 protection for 4 A circuits in industrial control panels, enabling reliable power distribution. Engineers often struggle to balance fast fault clearing with minimal nuisance trips during motor start-up and high inrush conditions. With CE marking and RoHS-compliant information available through Eaton's RoHS tool, this device meets EU regulatory requirements while supporting material declarations. This combination supports efficient, compliant electrical protection and reliable uptime in automation, power distribution, and electrical protection applications. In demanding environments, choosing the right fuse helps reduce maintenance costs and improve equipment availability without compromising safety.
Product Information
Extended Description
LPS-RK-4SP Eaton: Eaton Bussmann Series Class RK1 fuse, LPS-RK, time-delay, dual-element, current limiting fuse, 4 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-4SP
UPC
051712548212
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
4 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
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 design. Business impact: Supports controlled fault clearing during motor start-up and inrush conditions, reducing nuisance trips while maintaining protection. Application: Power distribution panels and motor drives in automation lines. The LPS-RK-4SP enables predictable fault response and steady production. Feature: 4 A amperage rating with high voltage capability. Business impact: Protects circuits at 600 Vac and 300 Vdc, enabling safe operation of mixed-DC/AC loads in control cabinets. Application: Industrial power wiring, automated equipment. Feature: 300 kAIC interrupt rating at 600 Vac and 100 kAIC at 300 Vdc. Business impact: High fault tolerance in large switchgear and distributed power networks, reducing arc flash risk. Application: Heavy-duty control systems and MCCs. Feature: Dual elements with ferrule end-to-end and electrically isolated end caps. Business impact: Easy installation, reliable connections, and safer maintenance in confined enclosures. Application: Panel boards and OEM assemblies. Feature: Non-indicating fuse with standard packaging (10 per pack). Business impact: Simplifies inventory management and replacement planning in maintenance programs. Application: Field service and plant-wide upgrades.
Get a Quick Quote for a Eaton LPS-RK-4SP
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-4SP?
Enquire Now
FAQs
Yes. The LPS-RK-4SP is 5 in long with 0.81 in width and 0.81 in height, featuring ferrule end connections and a dual-element, time-delay design. It fits standard fuse blocks used in industrial control panels and MCCs, ensuring straightforward replacement and minimal panel modification. The 1.6 lb weight aids in handling during installation and service.
The fuse provides a 4 A amperage rating, with a voltage rating of 600 Vac and 300 Vdc. Its interrupt rating is 300 kAIC at 600 Vac and 100 kAIC at 300 Vdc. It is a time-delay, dual-element, current-limiting device, with a response time of about 10 seconds at 500% rated current, suitable for inrush and motor-start scenarios.
Yes. The time-delay, dual-element design tolerates motor inrush while providing current-limiting protection to prevent conductor overheating. Its 4 A rating and high interrupt capacity make it appropriate for motor control centers and automation equipment where reliable fault clearing and uptime are critical, without excessive nuisance trips during startup.
The LPS-RK-4SP is CE marked for European compliance. Compliance resources are available via Eaton's RoHS search tool to verify material declarations. For detailed standards references, review the Low Voltage Branch Circuit Fuse Chapter data sheets (e.g., no. 1001) to confirm performance under relevant regulatory frameworks.
The high interrupt rating reduces the likelihood of cascading faults, contributing to lower downtime and maintenance costs. A non-indicating fuse with standard packaging and ferrule endpoints simplifies replacement and stocking, improving spare-part efficiency. In automation environments, this can translate to longer mean time between outages and faster service response, delivering clear OPEX savings over time.