Eaton LPN-RK-175SP Fuse - Class RK1 Time-Delay
Part Number: LPN-RK-175SP
Quick Summary
The LPN-RK-175SP fuse provides time-delay, current-limiting protection for motor drives and control circuits in industrial automation panels. Engineers often struggle with selecting fuses that tolerate motor inrush without nuisance blows. CE marked and RoHS compliant support global deployments, while Class RK1 protection matches standard motor-control circuits for predictable operation. With 175 A rated and interrupt ratings up to 300 kAIC at 250 Vac and 100 kAIC at 125 Vdc, this non-indicating fuse delivers reliable protection where space and cost matter. Installation compatibility is straightforward thanks to blade-end connections and a standard 7.13 in length, enabling fast swaps in existing Eaton Bussmann lineups.
Product Information
Extended Description
LPN-RK-175SP Eaton: Eaton Bussmann Series Class RK1 fuse, LPN-RK, time-delay, dual-element, current limiting fuse, 175 A, non-indicating fuse, interrupting rating of 300 kA at 250 Vac and 100 kA at 125 Vdc
Product Name
Eaton Bussmann series LPN-RK fuse
Catalog Number
LPN-RK-175SP
UPC
051712538497
Product Length/Depth
7.13 in
Product Height
1.61 in
Product Width
1.61 in
Product Weight
0.69 lb
Warranty
Not Applicable
Compliances
CE Marked RoHS Compliant
Amperage Rating
175 A
Interrupt rating
100 kAIC at 250 Vdc 300 kAIC at 250 Vac
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
Quantity
1
Special features
Indicating, High in-rush current motor protection
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
Feature → Time-delay, dual-element, current-limiting design protects motors and power circuits while tolerating inrush. Business Impact → Reduces nuisance tripping during startup, improving line uptime and maintenance costs. Application → Ideal for motor drives and control panels within industrial automation settings. Feature → 175 A amperage rating with 300 kAIC interrupt at 250 Vac and 100 kAIC at 125 Vdc. Business Impact → Provides strong short-circuit protection with ample fault-clearing capability, safeguarding equipment and reducing downtime. Application → Suitable for high-energy loads in manufacturing lines and packaging machinery. Feature → Class RK1 historical compatibility and blade-end x blade-end connections. Business Impact → Enables seamless retrofits and fast field swaps with minimal rewiring. Application → Common in legacy and modern control circuits in electrical protection and circuit control applications. Feature → 7.13 in length and 1.61 in cross-section with 0.69 lb weight. Business Impact → Compact, easy to mount in crowded panel spaces, lowering installation time and labor costs. Application → Fits standard Bussmann series enclosures and cabinets. Feature → CE Marked and RoHS compliant. Business Impact → Ensures global compliance and easier procurement across multinational plants. Application → Global manufacturing footprints and export-ready deployments. Feature → Non-indicating fuse indicator and dual-element protection. Business Impact → Reduces maintenance complexity and part count while delivering reliable protection for high inrush motor protection scenarios. Application → Industrial panels requiring robust, cost-efficient protection in a compact form factor.
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FAQs
For blade-end installations, confirm blade-end x blade-end connections match your panel busbar interface. The LPN-RK-175SP comes in a standard 7.13 in length, 1.61 in width and height, with a weight around 0.69 lb, enabling straightforward mounting in Bussmann-compatible enclosures and drawer-style fuse blocks. Ensure the space allows easy removal for maintenance and that downstream wiring adheres to NEC guidance for 250 Vac systems.
The time-delay dual-element design provides a short-circuit interrupting capability while tolerating initial inrush currents common to motor starts. This reduces nuisance trips during startup and protects the motor windings from transient faults. With 175 A rating and 300 kAIC interrupt at 250 Vac, it maintains robust protection for high-energy loads without sacrificing startup performance.
Yes. The LPN-RK-175SP lists voltage ratings of 250 Vac and 250 Vdc, making it suitable for both motor circuits and control circuits in industrial environments. The 175 A current rating paired with high interrupt ratings ensures reliable protection across mixed AC/DC applications within the same equipment.
This fuse is CE marked and RoHS compliant, meeting European regulatory requirements and supporting global deployment. It is classified as Class RK1, aligning with common protective coordination in motor-control circuits and simplifying procurement across multinational facilities.
The fuse’s high interrupt rating and time-delay capability reduce unplanned downtime from short circuits while tolerating motor inrush, improving equipment availability. Standard blade-end installation speeds service swaps, and RoHS/CE compliance streamlines global sourcing. Overall, expect lower maintenance costs, fewer nuisance trips, and a more standardized protection strategy across facilities.