SCHURTER 0034.3408 Glass Cartridge Fuse 125mA 250VAC — Equivalent & Substitute Parts

Part Overview

The SCHURTER 0034.3408 is a 125 mA, 250 V AC/DC glass cartridge fuse in the FST 6.3x32 series, designed for 3AB and 3AG holder applications. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new designs requiring compatible fuse protection.

Substiute Parts

0034.3408

SCHURTER Inc.In Stock: 11380034.3408 Datasheet

Current PartRFQ

0034.5208

SCHURTER Inc.In Stock: 12940034.5208 Datasheet

DirectRFQ

0313.125MXP

Littelfuse Inc.In Stock: 18240313.125MXP Datasheet

DirectRFQ

BK/MDL-1/8-R

Eaton - Electronics DivisionIn Stock: 5146BK/MDL-1/8-R Datasheet

SimilarRFQ

MDL-1/8-R

Eaton - Electronics DivisionIn Stock: 809MDL-1/8-R Datasheet

SimilarRFQ

0313.125HXP

Littelfuse Inc.In Stock: 11080313.125HXP Datasheet

Parametric EquivalentRFQ

0313.125VXP

Littelfuse Inc.In Stock: 7920313.125VXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SCHURTER 0034.3408 is determined by strict equivalence across the following electrical and mechanical parameters:

• Current Rating: 125 mA (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Size / Dimension: 0.250" Dia x 1.250" L (6.35mm x 31.75mm) (exact match required)
• Breaking Capacity: 35A (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)

All substitute parts listed below meet these criteria and are therefore electrically and mechanically interchangeable with the main part.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed are electrically and mechanically equivalent to the SCHURTER 0034.3408 and meet the specified parameter requirements for direct replacement.

For new designs and ongoing maintenance, the Littelfuse 0313.125MXP, 0313.125HXP, and 0313.125VXP series, as well as the Eaton BK/MDL-1/8-R and MDL-1/8-R, are recommended due to their active product status and comprehensive approval certifications (CE, CSA, UL). These parts ensure compliance with current regulatory standards and provide long-term supply availability.

The SCHURTER 0034.5208 remains available as a direct manufacturer alternative but shares the obsolete status of the primary part.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts interchangeably with the SCHURTER 0034.3408?

A: Yes. All listed substitute parts meet identical electrical and mechanical specifications: 125 mA current rating, 250 V AC voltage rating, slow-blow response time, 3AB/3AG package compatibility, and 0.250" Dia x 1.250" L dimensions. They are direct replacements.

Q: What is the difference between the Littelfuse 0313.125MXP, 0313.125HXP, and 0313.125VXP variants?

A: These three Littelfuse parts share identical electrical and mechanical parameters. Differences, if any, are not specified in the provided technical data and do not affect substitution compatibility.

Q: Are there differences between the Eaton BK/MDL-1/8-R and MDL-1/8-R?

A: Both Eaton parts meet identical electrical and mechanical specifications. The primary difference is RoHS compliance designation: BK/MDL-1/8-R is ROHS3 Compliant, while MDL-1/8-R is listed as RoHS Compliant. Both are active products suitable for replacement applications.

Q: Why is the SCHURTER 0034.3408 marked as obsolete?

A: The main part is classified as obsolete, which is why substitute parts are necessary. Active alternatives from Littelfuse and Eaton provide equivalent functionality with ongoing supply availability and current regulatory compliance.

Q: Do all substitute parts have the same approval certifications?

A: No. The SCHURTER 0034.3408 has no listed approval agencies. The SCHURTER 0034.5208 carries CSA and UL approvals. Littelfuse parts (0313.125MXP, 0313.125HXP, 0313.125VXP) and Eaton parts (BK/MDL-1/8-R, MDL-1/8-R) all carry CE, CSA, and UL approvals, providing broader regulatory coverage.

Q: Can I use these fuses in any 3AB/3AG holder?

A: Yes. All parts are designed for 3AB and 3AG holder applications with matching 1/4" x 1-1/4" dimensions and are therefore compatible with any standard holder for this package type.