Equivalent & Substitute Parts for 0LKS030.S

Part Overview

The 0LKS030.S is a 30A 600VAC cartridge fuse link manufactured by Littelfuse Inc. under the POWR-GARD® LKS series. This fast-blow fuse is designed for electrical and industrial applications requiring Class H protection with a breaking capacity of 10kA at rated voltage. The product is currently obsolete, making identification of functionally equivalent alternatives essential for system maintenance and component replacement in existing installations.

Substiute Parts

0LKS030.S

Littelfuse Inc.In Stock: 11330LKS030.S Datasheet

Current PartRFQ

KLSR030.T

Littelfuse Inc.In Stock: 761KLSR030.T Datasheet

MFR RecommendedRFQ

LKS-30

Eaton - Bussmann Electrical DivisionIn Stock: 741LKS-30 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 0LKS030.S is determined by the following critical parameters:

• Current Rating: 30A (exact match required)
• Voltage Rating - AC: 600 VAC (exact match required)
• Fuse Type: Cartridge-based form factor
• Response Time: Fast Blow characteristic
• Mounting Type: Requires Holder (cartridge holder compatibility)
• Package / Case: Cartridge configuration
• Approval Agencies: CE, CSA, UL certifications

The substitute parts identified maintain these core electrical and mechanical specifications, ensuring functional equivalence within the same application context. Differences in breaking capacity, voltage rating extensions (DC capability), and product status are noted but do not preclude substitution where the primary AC voltage and current ratings align.

Parameter Comparison

Engineering Selection Recommendations

KLSR030.T is the manufacturer-recommended substitute from Littelfuse Inc. This part maintains the 30A 600VAC core specification with identical diameter (0.811") and fast-blow response characteristic. The KLSR030.T is currently active in production, carries CE, CSA, and UL approvals matching the original part, and achieves ROHS3 compliance. The increased breaking capacity (200kA AC versus 10kA) and extended DC voltage rating (250VDC) provide enhanced performance margins without compromising the primary AC application. The length difference (5.000" versus 3.748") requires verification of holder compatibility before deployment.

LKS-30 from Eaton - Bussmann Electrical Division is an alternative substitute with active product status and RoHS compliance. This renewable link fuse maintains the 30A current rating and is actively manufactured. Limited technical specification data is provided for this part; verification of voltage rating, breaking capacity, and physical dimensions is necessary to confirm holder compatibility and application suitability.

Frequently Asked Questions (FAQ)

Q: Can KLSR030.T be used as a direct replacement for 0LKS030.S?

A: KLSR030.T maintains the critical electrical specifications (30A, 600VAC, fast-blow response) and identical diameter. The length difference (127.00mm versus 95.20mm) requires confirmation that the cartridge holder accommodates the longer dimension. Electrical performance is equivalent for 600VAC applications.

Q: What is the difference between Class H and Class RK1 fuses?

A: Class H and Class RK1 represent different fuse classifications with distinct breaking capacities and application contexts. The 0LKS030.S is Class H with 10kA breaking capacity; KLSR030.T is Class RK1 with 200kA breaking capacity. Both are fast-blow cartridge fuses rated for 30A 600VAC. Selection depends on the specific circuit protection requirements and equipment design specifications.

Q: Does the DC voltage rating on KLSR030.T affect AC-only applications?

A: The 250VDC rating on KLSR030.T is an additional capability that does not affect performance in AC-only circuits. The 600VAC rating remains the primary specification for AC applications. The extended DC rating provides flexibility for mixed-voltage systems without compromising AC protection characteristics.

Q: Are there physical compatibility concerns with substitute parts?

A: Yes. The 0LKS030.S measures 0.811" Dia x 3.748" L. KLSR030.T measures 0.811" Dia x 5.000" L. The diameter is identical, but the length difference requires verification that the cartridge holder has sufficient depth to accommodate the longer fuse. Physical installation must be confirmed before deployment.

Q: What is the significance of RoHS compliance for these fuses?

A: The 0LKS030.S is RoHS non-compliant; both KLSR030.T and LKS-30 are RoHS compliant. For new installations or systems subject to RoHS regulations, the compliant substitutes are required. For existing systems using the obsolete part, RoHS status may not be a constraint depending on application context and regulatory requirements.

Q: Can LKS-30 be used interchangeably with 0LKS030.S?

A: LKS-30 maintains the 30A current rating and is actively manufactured by Eaton - Bussmann. However, complete technical specifications (voltage rating, breaking capacity, physical dimensions, response time) are not provided in the available data. Verification of these parameters against the original 0LKS030.S specifications is required before confirming interchangeability.