Eaton LPN-RK-100SPI Fuse - Class RK1, 300 kAIC

Part Number: LPN-RK-100SPI
Manufacturer
Eaton
Part number
LPN-RK-100SPI

Quick Summary

LPN-RK-100SPI fuse delivers time-delay, dual-element protection for motor and power circuits in industrial panels. Engineers often wrestle with nuisance tripping during motor inrush, and this fuse is designed to tolerate inrush while protecting conductors and downstream devices. It is CE Marked and aligned with the Class RK1 family, offering reliable interruption performance at 250 Vac and, where applicable, 250 Vdc. This combination supports panel performance, safety compliance, and straightforward maintenance. In practice, customers gain uptime and predictable coordination with other protective devices, while maintaining cost-effective protection in control cabinets and motor circuits. The device also integrates well with standard Bussmann series holders and supports efficient lifecycle management in manufacturing environments.

Product Information

Extended Description

LPN-RK-100SPI Eaton: Eaton Bussmann Series Class RK1 fuse, LPN-RK, time-delay, dual-element, current limiting fuse, 100 A, indicating fuse, interrupting rating of 300 kA at 250 Vac
Product Name
Eaton Bussmann series LPN-RK fuse
Catalog Number
LPN-RK-100SPI
UPC
051712626521
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
CE Marked
Amperage Rating
100 A
Interrupt rating
300 kAIC at 250 Vac 100 kAIC at 250 Vdc
Voltage rating
250 Vac, 250 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
5
Special features
Indicating, High in-rush current motor protection
Feature → Business Impact → Application: Time-delay, dual-element design provides tolerance to motor inrush and selective fault clearance, reducing false trips and protecting wiring. This translates to higher line uptime in conveyors, pumps, and machine tools, while maintaining fast fault clearing for actual faults. Application: Motor control panels, drive sections, and power distribution where inrush is common. Feature → Business Impact → Application: 100 A amperage rating paired with a 300 kAIC interrupt rating at 250 Vac ensures robust protection for feeders and switchgear without compromising on selectivity. Benefit: safer disconnects, minimized arc energy, and simplified coordination with upstream protections. Application: Medium-to-heavy duty machinery in manufacturing and packaging lines. Feature → Business Impact → Application: Time-delay current-limiting performance reduces fault energy and limits damage to downstream components, enabling longer life for contactors and wiring. Application: Control panels and MCCs. Feature → Business Impact → Application: Blade end x blade end connections and a compact 5.88 in length with 1.1 in width and height enable easy integration into standard fuse blocks and cabinets. Benefit: faster installation, lower cabinet depth, and straightforward replacement. Application: Industrial automation assemblies with constrained spaces. Feature → Business Impact → Application: Optional indicating version and standardized packaging (5 per package) streamline status monitoring and procurement. Benefit: easier maintenance planning, reduced inventory complexity, and clear fault indication in control panels. Application: OEM machinery, spare parts catalogs, and service teams.

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FAQs

Install the fuse in a compatible Bussmann/Bussmann-series holder with blade-end connections. Verify the panel has 250 Vac rating, then insert the fuse ensuring proper alignment. The device is packaged in standard packaging (5 per pack) to support panel replenishment and quick maintenance.
It provides a 100 A amperage rating with a 300 kAIC interrupt rating at 250 Vac (and 100 kAIC at 250 Vdc). The fuse is time-delay and current-limiting, with a voltage rating of 250 Vac and 250 Vdc, designed for dual-element protection in motor and power circuits.
Yes. The time-delay, dual-element design tolerates motor inrush without nuisance tripping while still delivering fast fault clearing to protect downstream components.
The fuse is CE Marked, aligning with European safety and conformity requirements. It belongs to the Class RK1 protection family, offering industry-standard protection characteristics for control panels and motor circuits.
Dimensions are 5.88 in length, 1.1 in height, and 1.1 in width, with an approximate weight of 1.5 lb. It is sold in standard packaging, quantity of 5 per box, and uses blade-end connections for easy integration.