LKS-150 Equivalent & Substitute Parts

Part Overview

The LKS-150 is a Super Lag Renewable Fuse Link manufactured by Eaton - Bussmann Electrical Division. This component is classified as obsolete, making identification of suitable substitutes essential for ongoing system maintenance and component procurement. The Super Lag design provides time-delay characteristics suitable for applications requiring protection against temporary overcurrent conditions while maintaining circuit continuity during normal operation.

Substiute Parts

LKS-150

Eaton - Bussmann Electrical DivisionIn Stock: 776LKS-150 Datasheet

Current PartRFQ

LPS-RK-150SP

Eaton - Bussmann Electrical DivisionIn Stock: 1138LPS-RK-150SP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The LKS-150 is substituted by the LPS-RK-150SP based on the following critical parameters:

• Current Rating: Both components are rated for 150A operation
• Manufacturer: Both are manufactured by Eaton - Bussmann Electrical Division, ensuring design consistency and quality standards
• Response Time Classification: Both employ slow-blow (time-delay) characteristics for motor and transformer protection applications
• Regulatory Compliance: Both maintain RoHS compliance and carry identical ECCN and HTSUS classifications
• Approval Certifications: Both hold CE, CSA, and UL approvals

The LPS-RK-150SP represents the active product line successor within Eaton's Low-Peak™ LPS series, designed to provide equivalent protection characteristics while utilizing current manufacturing standards.

Parameter Comparison

Engineering Selection Recommendations

The LPS-RK-150SP is the designated substitute for the obsolete LKS-150. Selection of this component is supported by:

• Product Status Alignment: The LPS-RK-150SP maintains active manufacturing status, ensuring long-term availability and supply chain continuity
• Regulatory Compliance: Both components maintain identical RoHS compliance and regulatory classifications (ECCN EAR99, HTSUS 8536.10.0040)
• Certification Parity: Both components carry equivalent approval certifications from CE, CSA, and UL authorities
• Manufacturer Consistency: Sourcing from the same manufacturer ensures design philosophy and quality standards alignment
• Current Rating Equivalence: The 150A rating is maintained across both components

Frequently Asked Questions (FAQ)

Q: Why is the LKS-150 being replaced? A: The LKS-150 has reached obsolete status. The LPS-RK-150SP is the active product line equivalent from Eaton - Bussmann Electrical Division, providing the same 150A current rating and slow-blow response characteristics.

Q: Are the voltage ratings identical between LKS-150 and LPS-RK-150SP? A: The LPS-RK-150SP is rated for 600 VAC and 300 VDC operation. Voltage specifications for the LKS-150 were not provided in the original documentation. Verify voltage requirements against your system specifications before substitution.

Q: What is the difference between a renewable fuse link and a cartridge fuse? A: The LKS-150 is a renewable fuse link design, while the LPS-RK-150SP is a cartridge fuse. Both provide equivalent 150A protection with slow-blow characteristics. The cartridge design of the LPS-RK-150SP represents current manufacturing standards.

Q: Are both components RoHS compliant? A: Yes, both the LKS-150 and LPS-RK-150SP are RoHS compliant and carry identical regulatory classifications.

Q: What mounting configuration does the LPS-RK-150SP use? A: The LPS-RK-150SP employs bolt mount configuration with cylindrical blade terminal design, measuring 1.610" diameter by 9.630" length (40.89mm x 244.60mm).

Q: What is the RK1 class designation? A: RK1 is a fuse class designation indicating the component meets specific performance and breaking capacity standards. The LPS-RK-150SP is rated for 300kA AC and 100kA DC breaking capacity at rated voltage.