DCM-30 Equivalent & Substitute Parts Reference

Part Overview

The DCM-30 is a 30A 600VAC/600VDC fast-blow fuse cartridge manufactured by Eaton - Bussmann Electrical Division. This component is classified as obsolete, requiring identification of active equivalent parts for ongoing procurement and system maintenance. Substitute parts must maintain identical electrical ratings, mechanical dimensions, and approval certifications to ensure direct compatibility in existing installations.

Substiute Parts

DCM-30

Eaton - Bussmann Electrical DivisionIn Stock: 3972DCM-30 Datasheet

Current PartRFQ

KLM-30

Eaton - Bussmann Electrical DivisionIn Stock: 806KLM-30 Datasheet

SimilarRFQ

KLKD030.T

Littelfuse Inc.In Stock: 18662KLKD030.T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DCM-30 are qualified based on the following mandatory parameters:

• Current Rating: 30A (exact match required)
• Voltage Rating: 600 VAC and 600 VDC (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: 5AG, 10mm x 38mm Midget cartridge (exact match required)
• Physical Dimensions: 0.406" Dia x 1.500" L (exact match required)
• Breaking Capacity: 100kA AC, 50kA DC (exact match required)
• Fuse Type: Cartridge requiring holder (exact match required)

All identified substitutes meet these criteria and are sourced from manufacturers with active product status and current certifications.

Parameter Comparison

Engineering Selection Recommendations

KLM-30 (Eaton - Bussmann Electrical Division): This part maintains manufacturer continuity with the original DCM-30 while offering active product status. It provides identical electrical and mechanical specifications with enhanced compliance certifications (CE, CSA, UL) and ROHS3 compliance. Recommended for applications requiring manufacturer consistency and established supply chain relationships.

KLKD030.T (Littelfuse Inc.): This POWR-GARD® series cartridge fuse meets all electrical and mechanical requirements with active product status and full certification coverage (CE, CSA, UL). It includes additional technical specifications (Melting I²t: 1409; DC Cold Resistance: 0.002776 Ohms) and ROHS3 compliance. Recommended for applications where multi-source qualification is required or where Littelfuse supply chain availability is preferred.

Both substitutes are electrically and mechanically interchangeable with the DCM-30 and are suitable for direct replacement in existing fuse holders rated for 5AG cartridges.

Frequently Asked Questions (FAQ)

Q: Can KLM-30 and KLKD030.T be used interchangeably with DCM-30?

A: Yes. Both parts meet identical electrical ratings (30A, 600VAC/VDC, fast-blow response), mechanical dimensions (0.406" Dia x 1.500" L), and breaking capacity (100kA AC, 50kA DC). Both are cartridge fuses requiring standard 5AG holders.

Q: What is the difference between KLM-30 and KLKD030.T?

A: Both parts are electrically and mechanically equivalent. The primary differences are manufacturer (Eaton vs. Littelfuse), packaging format (Bulk vs. Box), and additional technical data provided for KLKD030.T (Melting I²t and DC Cold Resistance values). Both carry CE, CSA, and UL certifications.

Q: Why is DCM-30 listed as obsolete?

A: The DCM-30 has been discontinued by Eaton - Bussmann. Active equivalent parts (KLM-30 and KLKD030.T) are available for new procurement and replacement applications.

Q: Are there any compliance differences between the three parts?

A: DCM-30 carries CSA and UL approvals. Both KLM-30 and KLKD030.T carry CE, CSA, and UL approvals, providing broader regulatory coverage. KLM-30 and KLKD030.T are ROHS3 compliant; DCM-30 compliance status is not specified.

Q: Will these fuses fit in existing DCM-30 fuse holders?

A: Yes. All three parts use the 5AG cartridge format with identical physical dimensions (0.406" Dia x 1.500" L) and require standard cartridge fuse holders. No mechanical modifications are required.

Q: What inventory availability exists for these parts?

A: DCM-30: 3900 pcs (obsolete stock). KLM-30: 755 pcs. KLKD030.T: 18552 pcs. KLKD030.T offers the highest current availability.