Eaton LPN-RK-100SP-TP Fuse - RK1 Time-Delay, Current-Limiting
Part Number: LPN-RK-100SP-TP
Quick Summary
The Eaton LPN-RK-100SP-TP fuse provides reliable overcurrent protection for motor drives and control panels. Engineers frequently battle nuisance trips caused by startup surges, which can lead to unplanned downtime and maintenance costs. While the RK1 class, tin-plated construction, and time-delay current-limiting design address these challenges, no CE, SIL, or IP certifications are listed in the provided data; confirm with Eaton’s datasheet for your regulatory needs. This combination of compact packaging and robust protection enables safer panel design, easier part replacement, and dependable performance across installations, supporting predictable operation, reduced energy waste, and improved uptime for industrial equipment and drives.
Product Information
Extended Description
LPN-RK-100SP-TP Eaton: Eaton Bussmann series LPN-RK fuse, Low-peak fuse, 100 A, RK1, Non-indicating, Time delay, Current-limiting, 8 sec at 500%, 100 kAIC at 125 Vdc, 300 kAIC at 250 V, Tin-plated, Standard
Product Name
Eaton Bussmann series LPN-RK fuse
Catalog Number
LPN-RK-100SP-TP
UPC
051712752329
Product Length/Depth
5.88 in
Product Height
1.1 in
Product Width
1.1 in
Product Weight
1.5 lb
Warranty
Not Applicable
Compliances
Not Applicable
Amperage Rating
100 A
Interrupt rating
100 kAIC at 125 Vdc 300 kAIC at 250 Vac
Response time
8 sec at 500%
Fuse type
Time delay Current-limiting
Material
Tin-plated
Packaging type
Standard
Class
Class RK1
Fuse indicator
Non-indicating
Special features
Indicating, High in-rush current motor protection
Bussmann series complete full line catalog no. 1007
Bussmann series complete full line catalog no. 1007
Bussmann series Fuseology
Eaton Specification Sheet - LPN-RK-100SP-TP
Feature → Business Impact → Application: The LPN-RK-100SP-TP is a low-peak, time-delay fuse rated at 100 A with RK1 class construction, delivering reduced nuisance tripping during motor startups and inrush events. This improves line reliability and reduces downtime in motor control centers and panel assemblies. Application: motor protection in conveyor, pump, and fan systems where startup surges are common. Feature → Business Impact → Application: Current-limiting capability minimizes fault energy, protecting cables and components while enabling safer fault isolation, lowering arc energy in short-circuit events. Application: control circuits and distribution blocks in industrial automation. Feature → Business Impact → Application: Tin-plated material enhances corrosion resistance in harsh environments, improving long-term reliability in outdoor enclosures or humid facilities. Application: industrial automation environments with exposure to moisture. Feature → Business Impact → Application: Non-indicating fuse with standard packaging simplifies inventory management and replacement in high-density panels, reducing maintenance time. Application: compact control panels and spares inventory for service teams. Feature → Business Impact → Application: 8-second response at 500% overload provides jacketed protection against short overloads without nuisance trips, supporting precise motor protection and lifecycle extension. Application: drives and motors with high inrush requirements.
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FAQs
The LPN-RK-100SP-TP is a standard RK1-class fuse designed for Bussmann series compatibility with typical RK1 holders. Its dimensions (5.88 in length, 1.1 in width, 1.1 in height) and standard packaging simplify integration into control panels and switchgear enclosures. Ensure your fuse holder supports RK1 class devices and verify mounting clearance in dense panels to prevent heat buildup.
Key specs include a 100 A amperage rating, breakdown performance of 100 kAIC at 125 Vdc and 300 kAIC at 250 Vac, and an 8-second response at 500% overload. It provides time-delay protection with current-limiting characteristics, suitable for motor start-up surges and transient faults. The tin-plated construction enhances durability in challenging environments.
Yes. The fuse features a time-delay profile and current-limiting behavior tailored for motors and high inrush scenarios. This helps prevent nuisance trips during startup while still providing fast fault interruption for genuine faults. For best results, pair with appropriate motor starters and verify inrush profiles in your specific drive or pump application.
The provided data lists 'Not Applicable' for warranty and compliances and does not specify CE, SIL, or IP certifications. For regulated environments or regions requiring specific approvals, consult Eaton’s official datasheet or sales engineer to confirm certifications and ensure your installation meets local electrical codes.
The LPN-RK-100SP-TP offers protective benefits that can lower downtime and equipment wear by limiting fault energy and reducing nuisance trips. Its standard packaging and 5.88 in length facilitate quick replacements, supporting faster service, simpler spare parts management, and potential reductions in maintenance costs over the life of motor-driven equipment.