Eaton LPS-RK-35SPI Fuse - RK1 Class, 35A, 600 Vac
Part Number: LPS-RK-35SPI
Quick Summary
Eaton LPS-RK-35SPI fuse provides reliable time-delay, current-limiting protection for motor and power-distribution circuits. In busy panels, selecting protection that withstands inrush surges without nuisance trips is a constant challenge. The device carries CE marking and belongs to the Class RK1 family, with a dual-element design for fast fault isolation; note that SIL or IP ratings are not specified in the data. By aligning with 600 Vac systems and 35 A ratings, it supports safer, more reliable machine operation and reduces maintenance downtime in industrial automation and electrical protection programs.
Product Information
Extended Description
LPS-RK-35SPI Eaton: Eaton Bussmann Series Class RK1 fuse, LPS-RK, time-delay, dual-element, current limiting fuse, 35 A, indicating fuse, interrupting rating of 300 kA at 600 Vac
Product Name
Eaton Bussmann series LPS-RK fuse
Catalog Number
LPS-RK-35SPI
UPC
051712626262
Product Length/Depth
5.5 in
Product Height
1 in
Product Width
1 in
Product Weight
0.315 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
35 A
Interrupt rating
100 kAIC at 300 Vdc 300 kAIC at 600 Vac
Response time
10 sec at 500%
Voltage rating
600 Vac, 300 Vdc
Fuse type
Time delay Current-limiting
Number of elements
Dual
Packaging type
Standard
Class
Class RK1
Connection
Ferrule end x ferrule end
Fuse indicator
Non-indicating With Indicator
Quantity
10
Special features
Electrically isolated end cap
Bussmann Full Line Catalog
Bussmann Full Line Catalog
RoHS Search Tool
Bussmann series Fuseology
Bussmann series Low-Peak 600 V LPS Class RK1 time-delay fuses, up to 600 A data sheet no. 1001
Time-delay, dual-element construction lets the fuse tolerate motor inrush while delivering fast fault isolation. This reduces nuisance trips and extends equipment life in harsh manufacturing environments, delivering measurable uptime improvements for conveyors and pumps. The 600 Vac, 300 Vdc rating with a 35 A amperage rating fits common industrial feeders, reducing the need for multiple device types and simplifying panel design and stocking. The high interrupt rating—300 kAIC at 600 Vac and 100 kAIC at 300 Vdc—provides robust protection for high-energy faults, safeguarding downstream equipment and personnel. Ferrule-end connections and the option for an indicating or non-indicating fuse support quick, error-free installation and easier fault diagnostics in field applications. Class RK1 compatibility with standard Bussmann catalogs ensures easy replacement, while electrically isolated end caps enhance safety during maintenance in live panel environments.
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FAQs
The LPS-RK-35SPI uses ferrule end-to-end connectors and follows the RK1 class geometry, enabling straightforward drop-in replacement in standard Bussmann/RK1 fuse holders. It supports 600 Vac and 300 Vdc circuits, with a 5.5 in body length and 1 in square footprint compatible with typical control panels and enclosure rack spaces. When selecting a holder, verify enclosure rating and panel spacing to ensure proper clearance and cooling during operation.
Key specs include a 35 A amperage rating, 600 Vac and 300 Vdc voltage ratings, and a dual-element time-delay, current-limiting design. It offers a 300 kAIC interrupt rating at 600 Vac and 100 kAIC at 300 Vdc, with a response time of about 10 seconds at 500% overload. These figures support reliable protection for high-inrush motor circuits while minimizing nuisance trips.
Yes, the LPS-RK-35SPI is well-suited for motor protection in AC drive and automation applications where inrush currents are common. Its time-delay feature accommodates motor startup surges, while current-limiting capability helps contain fault energy. For drive applications, ensure voltage compatibility (600 Vac main supply) and verify panel ratings and wiring to maintain clean fault isolation and safe maintenance.
The data specifies CE marking as a compliance point for this fuse, indicating conformity with relevant European safety standards. No SIL or IP ratings are listed in the provided data, and there is no explicit RoHS designation shown here. When procurement requires additional certifications, consult Eaton catalogs or data sheets for any updates or regional approvals beyond CE marking.
The dual-element time-delay design reduces nuisance trips during inrush events, lowering unplanned downtime and extending equipment life in motors and feeders. The option for an indicating version aids quick fault identification during routine maintenance, while the robust RK1 class compatibility simplifies spares strategy. Overall, this translates to lower maintenance overhead, faster replacements, and improved system availability.