SC-30 Ceramic Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The SC-30 is a 30A ceramic cartridge fuse rated for 480VAC and 300VDC operation, manufactured by Eaton - Bussmann Electrical Division. This slow-blow fuse requires a holder for installation and is designed for industrial electrical applications. The part maintains active product status with full compliance certifications including CE, CSA, and UL approval. Substitute parts are identified when electrical and mechanical parameters align within the allowed specifications for this fuse category.

Substiute Parts

SC-30

Eaton - Bussmann Electrical DivisionIn Stock: 1249SC-30 Datasheet

Current PartRFQ

BK/SC-30

Eaton - Bussmann Electrical DivisionIn Stock: 1257BK/SC-30 Datasheet

DirectRFQ

0SLC030.T

Littelfuse Inc.In Stock: 9300SLC030.T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SC-30 are classified based on matching electrical and mechanical parameters that define functional equivalence within this fuse category:

Direct Equivalent (BK/SC-30): This part matches all critical parameters including current rating (30A), AC voltage (480V), DC voltage (300V), response time (Slow Blow), breaking capacity (100kA AC, 10kA DC), physical dimensions (0.410" Dia x 1.620" L), and approval certifications (CE, CSA, UL). The BK/SC-30 is manufactured by the same supplier (Eaton - Bussmann Electrical Division) and represents a direct interchangeable substitute.

Similar Equivalent (0SLC030.T): This Littelfuse Inc. part matches the current rating (30A), AC voltage (480VAC), breaking capacity (100kA AC, 10kA DC), cartridge type, and physical dimensions (0.406" Dia x 1.626" L). The DC voltage rating differs at 170VDC versus 300VDC, and the response time is Medium Blow rather than Slow Blow. This part is suitable for applications where the lower DC voltage rating and different response characteristic are acceptable.

Parameter Comparison

Engineering Selection Recommendations

BK/SC-30 Selection: This part is the direct equivalent for SC-30 applications. All electrical parameters, mechanical dimensions, response characteristics, and certifications are identical. Selection of BK/SC-30 requires no application review beyond standard inventory availability.

0SLC030.T Selection: This part is suitable for applications where DC voltage requirements do not exceed 170VDC and where Medium Blow response time is acceptable. The 0SLC030.T carries CE, CSA, QPL, and UL certifications, meeting the same regulatory framework as the SC-30. Physical dimensions are within tolerance of the SC-30 cartridge form factor. Applications requiring the full 300VDC rating or Slow Blow response must use SC-30 or BK/SC-30.

Frequently Asked Questions (FAQ)

Q: Can BK/SC-30 be used as a direct replacement for SC-30? A: Yes. BK/SC-30 is a direct equivalent with identical electrical ratings (30A, 480VAC, 300VDC), response time (Slow Blow), breaking capacity, physical dimensions, and certifications. No application modifications are required.

Q: What are the key differences between SC-30 and 0SLC030.T? A: The 0SLC030.T has a lower DC voltage rating (170VDC versus 300VDC) and Medium Blow response time instead of Slow Blow. Current rating, AC voltage, breaking capacity, and physical dimensions are equivalent. Selection depends on application DC voltage requirements and acceptable response characteristics.

Q: Are physical dimensions critical for substitution? A: Yes. All substitute parts must fit within the same cartridge holder. SC-30 and BK/SC-30 have identical dimensions (0.410" Dia x 1.620" L). The 0SLC030.T dimensions (0.406" Dia x 1.626" L) are within tolerance for standard non-standard cartridge holders but should be verified for specific holder compatibility.

Q: Do all substitute parts carry the same certifications? A: SC-30 and BK/SC-30 carry CE, CSA, and UL certifications. The 0SLC030.T carries CE, CSA, QPL, and UL certifications. All parts meet the same core regulatory requirements for industrial electrical applications.

Q: Can 0SLC030.T be used in applications requiring 300VDC operation? A: No. The 0SLC030.T is rated for 170VDC maximum. Applications requiring 300VDC operation must use SC-30 or BK/SC-30.