Eaton LPN-RK-35SPI Fuse - Class RK1 Time-Delay
Part Number: LPN-RK-35SPI
Quick Summary
The Eaton LPN-RK-35SPI fuse is a time-delay, dual-element protector ideal for motor circuits and power distribution. Engineers often battle nuisance tripping during motor start-up and inrush surges that complicate panel layouts. This device carries CE Marking and belongs to the Class RK1 family, delivering reliable protection with visible status options. Designed for rugged industrial environments, it supports 250 Vac ratings and standard RK1 compatibility, helping to reduce downtime while ensuring compliant, dependable motor protection in control panels and drives.
Product Information
Extended Description
LPN-RK-35SPI Eaton: Eaton Bussmann Series Class RK1 fuse, LPN-RK, time-delay, dual-element, current limiting fuse, 35 A, indicating fuse, interrupting rating of 300 kA at 250 Vac
Product Name
Eaton Bussmann series LPN-RK fuse
Catalog Number
LPN-RK-35SPI
UPC
051712626699
Product Length/Depth
3 in
Product Height
0.81 in
Product Width
0.81 in
Product Weight
1.2 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
35 A
Interrupt rating
100 kAIC at 250 Vdc 300 kAIC at 250 Vac
Response time
10 sec at 500%
Voltage rating
250 Vac, 250 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
Indicating, High in-rush current motor protection
Bussmann Full Line Catalog
Bussmann Full Line Catalog
RoHS Search Tool
Bussmann series Fuseology
Bussmann series Low-Peak 250 V LPN Class RK1 time-delay fuses,1/10-60 A data sheet no. 1003
Feature → Time-delay, dual-element, current-limiting design reduces nuisance trips during motor start-up while protecting circuits; Business Impact → Improves equipment uptime and reduces unplanned maintenance costs; Application → Motor drives, pumps, and conveyors in manufacturing facilities benefit from controlled inrush and safer fault interruption. Feature → High interrupt rating up to 300 kAIC at 250 Vac increases protection for large feeders; Business Impact → Enhanced safety and reliability in high-energy faults; Application → Power distribution panels and machine controls. Feature → Indicating option provides visible fault status; Business Impact → Faster fault location and quicker maintenance response; Application → Industrial control panels with remote monitoring. Feature → Class RK1 standardization ensures easy replacement and cross-reference; Business Impact → Reduced maintenance time and inventory complexity; Application → Replacement parts in RK1 fuse holders. Feature → Compact, 3 in length and 0.81 in width with 1.2 lb weight simplifies installation; Business Impact → Easier retrofits and denser panel layouts; Application → Control cabinets and motor starter skids. Special features → High in-rush current motor protection aligns with demanding motor loads; Business Impact → Superior protection for motors and drives, extending equipment life; Application → HVAC compressors, conveyors, and heavy-duty fans in automation lines.
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FAQs
The LPN-RK-35SPI is ideal for motor circuits, drives, pumps, and conveyors in industrial facilities. With a 35 A rating and 250 Vac operating voltage, it fits standard RK1 fuse holders and helps manage motor inrush while delivering reliable protection to control panels and drive applications.
Time-delay and dual-element construction tolerate brief inrush currents without nuisance tripping, allowing motors to start smoothly. This results in reduced mechanical wear, less downtime, and improved process reliability—critical in manufacturing lines and material handling systems.
Yes. The LPN-RK-35SPI is part of the Bussmann RK1 family, designed for RK1 fuse holders with a 3 in length and 0.81 in width. It comes in a standard packaging format, with a 10-unit quantity, enabling straightforward stocking and replacement in typical control panels and enclosures.
This fuse is CE marked for European compliance and belongs to the Class RK1 family. It provides an interrupt rating of 300 kAIC at 250 Vac (and 100 kAIC at 250 Vdc), with a 10-second response at 500% overload, making it suitable for demanding industrial electrical protection scenarios.
The LPN-RK-35SPI is available in quantities of 10 per order. It features a compact 3 in length and 0.81 in width, weighing 1.2 lb, with both indicating and non-indicating variants for status visibility, supporting efficient procurement and quick replacements in maintenance workflows.