Eaton LPN-RK-70SPI Fuse - Class RK1
Part Number: LPN-RK-70SPI
Quick Summary
Eaton LPN-RK-70SPI fuse provides time-delay protection for power circuits in industrial automation. In busy control panels, nuisance trips from inrush can stall productivity; this dual-element design minimizes that risk. CE marking confirms compliance with European safety standards, while the RK1 class provides standardized replacement in Bussmann-compatible gear. This fuse is a practical choice for motor loads and power distribution, supporting reliability and cost-efficient maintenance. Users benefit from clear product data: 70 A rating, 300 kAIC interrupt rating at 250 Vac, and dual-element protection that reduces arc flashes. With easy integration via blade-end connections and an optional indicating fuse, maintenance crews stay informed at a glance.
Product Information
Extended Description
LPN-RK-70SPI Eaton: Eaton Bussmann Series Class RK1 fuse, LPN-RK, time-delay, dual-element, current limiting fuse, 70 A, indicating fuse, interrupting rating of 300 kA at 250 Vac
Product Name
Eaton Bussmann series LPN-RK fuse
Catalog Number
LPN-RK-70SPI
UPC
051712626491
Product Length/Depth
5.88 in
Product Height
1.1 in
Product Width
1.1 in
Product Weight
0.34 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
70 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
Electrically isolated end cap
Bussmann series Class J Low-Peak fuse 70-600A data sheet No. 1007
Bussmann Full Line Catalog
Bussmann Full Line Catalog
RoHS Search Tool
Bussmann series Fuseology
Time-delay operation with dual-element construction delivers selective protection for circuits subject to motor inrush. This means the LPN-RK-70SPI holds current during startup transient, then meters fault current to prevent wiring damage, reducing nuisance trips and extending component life. In practical terms, technicians can protect drives, contactors, and feeders without compromising startup sequences, improving equipment uptime and planning for preventive maintenance. The 70 A rating with a 300 kAIC interrupt rating at 250 Vac provides robust fault protection for high-energy circuits, enabling selective coordination with upstream devices to minimize outages and preserve downstream loads. This dual-element, current-limiting fuse also supports 250 Vac and 250 Vdc environments, a critical consideration for mixed electrical systems such as robotics and conveyors. Class RK1 designation with blade-end connections ensures compatibility with common Bussmann-style fuse blocks and simplifies retrofits across existing panels, while the compact 5.88 in length fits tight enclosures. The electrically isolated end caps reduce maintenance risk during replacement and testing, and the indicator option allows at-a-glance health status in busy control rooms. Packaging and dimensions support straightforward stocking and rapid replacement for panel assemblies, contributing to lower maintenance costs and faster MTTR.
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FAQs
The LPN-RK-70SPI uses blade-end x blade-end connections designed for straightforward drop-in installation in Bussmann-class RK1 fuse blocks. Its dual-element, time-delay construction stays compatible with standard 5-pack packaging and typical panel layouts, while the electrically isolated end caps improve safety during replacement. This combination minimizes retrofit effort and reduces panel downtime when stocking spares.
The fuse combines time-delay operation with a dual-element design and current-limiting action. This means it tolerates startup surges common to motors and drives, while rapidly interrupting severe faults up to 300 kAIC at 250 Vac. In practice, this supports selective coordination, lowers nuisance trips, and protects wiring and components from arc fault damage.
Yes. With a 70 A rating and 300 kAIC interrupt capability at 250 Vac, it provides robust protection for motor control centers and panel boards. Its Class RK1 designation ensures compatibility with existing Bussmann-style blocks, and the blade-end connection simplifies upgrades or replacements without extensive rewiring.
The LPN-RK-70SPI is CE Marked, indicating compliance with European safety standards. Eaton also provides access to RoHS-related environmental information through its RoHS tool. No explicit SIL or IP data are listed in this record; refer to the official datasheet for a complete list of approvals and ratings.
Key benefits include reduced downtime from nuisance trips due to its time-delay design, quick identification via the indicator option, and easier stocking with standard RK1 compatibility. The robust interrupt rating supports uptime in high-current environments, while compact packaging and isolated end caps streamline maintenance and replacement, lowering total cost of ownership over the system life cycle.