Eaton LPS-RK-70SPI Fuse - 600 Vac RK1 Time-Delay
Part Number: LPS-RK-70SPI
Quick Summary
The Eaton LPS-RK-70SPI fuse provides time-delay protection for industrial control circuits. Engineers often battle nuisance trips during startup and transient surges, and the dual-element design helps maintain uptime without compromising protection. It carries CE marking and is built to Class RK1 standards, with an interrupt rating up to 300 kAIC at 600 VAC and 100 kAIC at 300 VDC. Features such as blade-end connections, electrically isolated end caps, and the choice of non-indicating or indicating fuse indicators simplify installation and long-term maintenance. With a 7.88 in length, 1.11 in width, 1.11 in height, and a 4 lb weight, it fits standard panel spaces.
Product Information
Extended Description
LPS-RK-70SPI Eaton: Eaton Bussmann Series Class RK1 fuse, LPS-RK, time-delay, dual-element, current limiting fuse, 70 A, indicating fuse, interrupting rating of 300 kA at 600 Vac
Product Name
Eaton Bussmann series LPS-RK fuse
Catalog Number
LPS-RK-70SPI
UPC
051712626538
Product Length/Depth
7.88 in
Product Height
1.11 in
Product Width
1.11 in
Product Weight
4 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
70 A
Interrupt rating
100 kAIC at 300 Vdc 300 kAIC at 600 Vac
Voltage rating
600 Vac, 300 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
1
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, 70-600 A data sheet no. 1002
The LPS-RK-70SPI fuse combines time-delay operation with dual-element current-limiting, delivering smoother startup protection for motors and drives. Business impact includes reduced nuisance trips and equipment wear while maintaining fast fault clearance. In application terms, it protects motor starters and control circuits in machine shops and process lines, supporting longer equipment life and fewer unscheduled outages. The Class RK1 construction paired with a 600 VAC rating and a 300 kAIC interrupt capability provides robust fault handling for feeders and main circuits, minimizing downstream damage and costly downtime. Blade-end x blade-end connections with electrically isolated end caps improve installation safety and simplify field replacement, especially in retrofit or expansion projects. The fuse’s standard 7.88 in length, 1.11 in width, and 1.11 in height integrate with common panel footprints, reducing custom mounting needs and spare-part complexity. Overall, this solution delivers reliable protection with predictable performance in demanding automation environments.
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FAQs
Is compatible with standard RK1 panel setups and blade-end connection hardware. The LPS-RK-70SPI uses Class RK1 construction with blade-end x blade-end termination and an electrically isolated end cap for safer installation. Its 7.88 in length and 1.11 in width fit common control cabinets, while a single 1-pack packaging aligns with spare parts logistics. It complements Bussmann RK1 inventory.
Designed for motor control and startup protection, the LPS-RK-70SPI combines time-delay operation with dual-element current-limiting. It provides a 70 A rating and 300 kAIC at 600 VAC interrupt rating, plus 100 kAIC at 300 VDC, ensuring fast yet safe fault clearance. The device uses blade-end termination for quick swaps, and its 7.88 in length fits standard control panels.
Typical applications include control panels, motor starters, and feeders in industrial automation and machine-building environments. The time-delay characteristic handles inrush currents, while the current-limiting feature guards downstream components. Its CE marking and RK1 class design support compliance across regional markets, making it suitable for OEMs, system integrators, and maintenance teams seeking reliable protection with minimal downtime.
Key certifications for the LPS-RK-70SPI include CE marking and RK1 class construction, reflecting compliance with European safety standards. The 600 VAC rating and high interrupt level support safe operation in distribution and motor circuits. For RoHS-related inquiries, Eaton provides a RoHS search tool, and the data sheet highlights the Low Peak 600 V RK1 data when needed.
Investing in the LPS-RK-70SPI yields improved uptime and reduced maintenance costs by lowering nuisance tripping and facilitating rapid replacements. The durable RK1 design and standard blade-end connections simplify stocking and spares management. Its robust interrupt rating and compliant construction minimize equipment damage from faults, supporting longer service intervals and lower total cost of ownership.