DCM-1/8 Equivalent & Substitute Parts

Part Overview

The DCM-1/8 is a 125mA fast-blow fuse cartridge rated for 600 VAC/VDC operation, manufactured by Eaton - Bussmann Electrical Division. This component is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain circuit protection functionality in applications where the original DCM-1/8 is no longer readily available or when design updates require active product alternatives.

Substiute Parts

DCM-1/8

Eaton - Bussmann Electrical DivisionIn Stock: 1069DCM-1/8 Datasheet

Current PartRFQ

KTK-1/8

Eaton - Bussmann Electrical DivisionIn Stock: 1119KTK-1/8 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DCM-1/8 is based on strict equivalence of the following electrical and mechanical parameters:

• Current Rating: 125mA (exact match required)
• Voltage Rating - AC: 600 VAC (minimum requirement)
• Response Time: Fast Blow (functional characteristic)
• Fuse Type: Cartridge (form factor)
• Package / Case: 5AG, 10mm x 38mm (Midget) (physical compatibility)
• Size / Dimension: 0.406" Dia x 1.500" L (10.30mm x 38.10mm) (holder compatibility)
• Approval Agency: CSA, UL (regulatory compliance)

The KTK-1/8 meets all these criteria and is classified as an active product, making it a direct substitute for the obsolete DCM-1/8.

Parameter Comparison

Engineering Selection Recommendations

The KTK-1/8 is the direct substitute for the DCM-1/8. Both components are manufactured by Eaton - Bussmann Electrical Division and share identical electrical ratings (125mA, 600 VAC), response characteristics (fast blow), physical dimensions (5AG, 10mm x 38mm), and regulatory certifications (CSA, UL). The KTK-1/8 holds active product status, ensuring ongoing availability and supply chain continuity. The KTK-1/8 also carries RoHS compliance, meeting current environmental regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the KTK-1/8 be used as a direct replacement for the DCM-1/8?

A: Yes. Both fuses share identical current ratings (125mA), AC voltage ratings (600 VAC), response time (fast blow), cartridge form factor, 5AG package designation, and physical dimensions (10mm x 38mm). Both are CSA and UL approved. The KTK-1/8 is the designated substitute.

Q: What is the significance of the 5AG package designation?

A: The 5AG designation identifies the fuse as a midget cartridge fuse with standardized dimensions of 10mm x 38mm. This ensures mechanical compatibility with standard fuse holders designed for this package class.

Q: Does the KTK-1/8 support both AC and DC applications?

A: The KTK-1/8 is rated for 600 VAC. DC voltage rating is not specified in the available data. The DCM-1/8 is rated for both 600 VAC and 600 VDC. For applications requiring confirmed DC operation at 600 VDC, the DC rating specification should be verified with the manufacturer.

Q: Why is the DCM-1/8 classified as obsolete?

A: Product obsolescence indicates that the DCM-1/8 is no longer in active production. The KTK-1/8 serves as the active equivalent, providing the same electrical and mechanical functionality with current manufacturing support.

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

A: Both parts carry CSA and UL approvals. The KTK-1/8 is RoHS compliant, while the DCM-1/8 is REACH unaffected. For applications subject to RoHS requirements, the KTK-1/8 is the appropriate selection.