Eaton LPS-RK-450SPI fuse - 600 Vac CE Marked
Part Number: LPS-RK-450SPI
Quick Summary
Eaton LPS-RK-450SPI fuse provides time-delay, current-limiting protection for industrial power circuits. Engineers often wrestle with nuisance trips and downtime when selecting fuses that balance protection with uptime. CE marking confirms compliance with international safety standards, while the Class RK1 designation supports reliable coordination in EU and global panels. With indicator variants and compact dimensions, this Eaton fuse helps reduce maintenance cycles while improving installation flexibility and safety. The product's dual-element design delivers dependable short-circuit protection without sacrificing the ability to tolerate temporary overloads. Designed for 450 A at 600 Vac with 300 kAIC interrupt rating, it's well-suited for feeders, motor starters, and service entrances.
Product Information
Extended Description
LPS-RK-450SPI Eaton: Eaton Bussmann Series Class RK1 fuse, LPS-RK, time-delay, dual-element, current limiting fuse, 450 A, indicating fuse, interrupting rating of 300 kA at 600 Vac
Product Name
Eaton Bussmann series LPS-RK fuse
Catalog Number
LPS-RK-450SPI
UPC
051712627443
Product Length/Depth
13.38 in
Product Height
2.88 in
Product Width
2.88 in
Product Weight
5.6 lb
Warranty
Not Applicable
Compliances
CE Marked
Amperage Rating
450 A
Interrupt rating
300 kAIC at 600 Vac 100 kAIC at 300 Vdc
Voltage rating
600 Vac, 300 Vdc
Fuse type
Time delay Current-limiting
Number of elements
Dual
Packaging type
Standard
Class
Class RK1
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
Feature time-delay, dual-element design paired with current-limiting action. Business Impact this combination provides selective coordination, allowing normal loads to pass while quickly interrupting faults, reducing arc energy and equipment stress. Application ideal for motor drives, conveyors, and machine controls where inrush currents are common. Feature high amperage rating of 450 A at 600 Vac. Business Impact accommodates large feeders and mid-size power distribution without nuisance trips. Application suitable for motor control centers, feeders, and switchgear assemblies in industrial facilities. Feature 300 kAIC interrupt rating at 600 Vac. Business Impact delivers robust fault interruption, protecting upstream breakers and critical equipment. Application in heavy-load panels, distribution boards, and safety-critical circuits. Feature Class RK1 family compatibility and standard packaging. Business Impact simplifies procurement and maintenance, enabling quick drop-in replacements in Bussmann RK1 frames. Application across new builds and retrofits in control panels. Feature electrically isolated end caps and optional indicator version. Business Impact enhances safety and fault diagnostics, reducing service time during fault location. Application in panels where quick visual confirmation of fault state matters. Feature CE Marking and general compliance. Business Impact supports regulatory acceptance and streamlined approvals for international installations. Application in EU, Asia-Pacific, and global facilities where standard protection is required.
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FAQs
The LPS-RK-450SPI is designed for Bussmann RK1 time-delay, current-limiting frames and panels. When installing, ensure correct end-cap configuration (electrically isolated end caps available), follow torque and clearance guidelines, and verify that the assembly matches the Class RK1 standard to maintain rated interrupt performance. Use standard packaging and mounting hardware for straightforward replacements in existing switchgear.
Key ratings include a 450 A amperage rating, voltage rating of 600 Vac and 300 Vdc, and an interrupt rating of 300 kAIC at 600 Vac (with 100 kAIC at 300 Vdc). The fuse is time-delay with dual-element construction, providing current-limiting protection while tolerating short transient overloads typical in industrial power circuits.
Yes. The 450 A, 600 Vac LPS-RK-450SPI is well-suited for motor control centers, feeders, and panel boards in 3-phase environments. Its time-delay, dual-element design supports motor inrush without sacrificing protection, while its 300 kAIC interrupt rating helps safeguard upstream devices during faults. Consider the indicator variant for easier fault location during servicing.
This fuse carries CE Marking, indicating compliance with international safety and performance standards. It adheres to the RK1 fuse class framework for reliable coordination in protection schemes. Use of the CE mark supports regulatory acceptance in European and many global markets and aligns with standard industrial equipment requirements.
The dual-element design provides robust fault interruption while tolerating temporary overloads, reducing nuisance trips and extending equipment uptime. An optional indicator variant improves fault pinpointing during maintenance, cutting diagnostic time. Standardized RK1 compatibility simplifies replacements and stock management, lowering maintenance costs and downtime in aging systems or new installations.