KLSR030.T Equivalent & Substitute Parts

Part Overview

The KLSR030.T is a 30A cartridge fuse manufactured by Littelfuse Inc. under the POWR-GARD® KLSR series. This fast-blow fuse is rated for 600 VAC and 250 VDC operation and is designed for electrical and industrial applications requiring RK1 class protection. The part is currently active in production with 665 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

KLSR030.T

Littelfuse Inc.In Stock: 761KLSR030.T Datasheet

Current PartRFQ

KTS-R-30

Eaton - Bussmann Electrical DivisionIn Stock: 917KTS-R-30 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KLSR030.T is based on electrical and mechanical compatibility within the following parameters:

• Current Rating: 30A
• Voltage Rating: 600 VAC / 250 VDC minimum
• Fuse Type: Cartridge format
• Response Time: Fast Blow
• Class: RK1
• Physical Dimensions: 0.811" Dia x 5.000" L
• Mounting: Cartridge holder compatible

The identified substitute, KTS-R-30 from Eaton - Bussmann Electrical Division, meets these core electrical and mechanical requirements for direct substitution in applications requiring 30A fast-acting fuse protection.

Parameter Comparison

Engineering Selection Recommendations

Both the KLSR030.T and KTS-R-30 are active production components with current regulatory compliance. The KLSR030.T carries CE, CSA, and UL approvals. The KTS-R-30 is RoHS compliant and shares the same HTSUS and ECCN classifications, indicating equivalent regulatory standing for industrial fuse applications.

Selection between these parts should be based on:

• Availability and lead time requirements
• Existing inventory and standardization practices
• Holder compatibility verification with the specific cartridge fuse holder in use
• Voltage and current rating confirmation for the target application circuit

Frequently Asked Questions (FAQ)

Q: Can KTS-R-30 be used as a direct replacement for KLSR030.T?

A: Yes, the KTS-R-30 meets the electrical and mechanical parameters required for substitution: 30A current rating, fast-acting response, cartridge format, and equivalent voltage handling capability. Both parts are active production components with current regulatory compliance.

Q: Are there dimensional differences between these cartridge fuses?

A: The KLSR030.T is specified at 0.811" Dia x 5.000" L. Dimensional compatibility with the cartridge holder must be verified before substitution, as holder specifications determine physical fit requirements.

Q: What is the difference between "Fast Blow" and "Fast Acting"?

A: Both designations indicate rapid response fuses designed to interrupt circuits quickly under overcurrent conditions. These terms are functionally equivalent for RK1 class cartridge fuse applications.

Q: Are both parts RoHS compliant?

A: Yes. The KLSR030.T is ROHS3 compliant, and the KTS-R-30 is RoHS compliant. Both meet current environmental and material restriction requirements.

Q: What certifications apply to these fuses?

A: The KLSR030.T carries CE, CSA, and UL approvals. The KTS-R-30 is RoHS compliant. Both share the same HTSUS and ECCN classifications for regulatory purposes.