SCHURTER 0034.3402 Equivalent & Substitute Parts

Part Overview

The SCHURTER 0034.3402 is a 32 mA, 250 V AC/DC slow-blow glass fuse cartridge in 3AB/3AG package format (1/4" x 1-1/4"). This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new designs. The fuse requires a compatible holder for installation and is designed for circuit protection applications requiring slow-blow response characteristics.

Substiute Parts

0034.3402

SCHURTER Inc.In Stock: 8270034.3402 Datasheet

Current PartRFQ

0313.031MXP

Littelfuse Inc.In Stock: 8310313.031MXP Datasheet

DirectRFQ

BK/MDL-1/32

Eaton - Electronics DivisionIn Stock: 882BK/MDL-1/32 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SCHURTER 0034.3402 are qualified based on the following critical parameters:

• Current Rating: 31-32 mA (within acceptable tolerance for slow-blow fuse operation)
• Voltage Rating (AC): 250 V (exact match required)
• Fuse Type: Cartridge, Glass (mechanical and electrical compatibility)
• Response Time: Slow Blow (functional equivalence)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (physical interchangeability)
• Size / Dimension: 0.250" Dia x 1.250" L (6.35mm x 31.75mm) (holder compatibility)
• Operating Temperature Range: -55°C ~ 125°C (environmental suitability)

Two substitute parts meet these criteria: the Littelfuse 0313.031MXP (direct equivalent with 31 mA rating) and the Eaton BK/MDL-1/32 (exact current rating match at 32 mA).

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 0313.031MXP is the primary substitute for the SCHURTER 0034.3402. This part maintains ROHS3 compliance, matches all critical electrical parameters, and is currently in active production status. The 1 mA current rating differential (31 mA vs. 32 mA) is within acceptable tolerance for slow-blow fuse operation and does not compromise circuit protection function.

The Eaton BK/MDL-1/32 provides an exact current rating match at 32 mA and maintains mechanical compatibility. However, this part is RoHS non-compliant and lacks specified breaking capacity and operating temperature range data. Selection of the Eaton part should be limited to applications where RoHS compliance is not a requirement and where the absence of specified performance parameters is acceptable.

For new designs and applications requiring regulatory compliance, the Littelfuse 0313.031MXP is the recommended substitute.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 0313.031MXP be used as a direct replacement for the SCHURTER 0034.3402?

A: Yes. Both parts are 250 V AC/DC slow-blow glass cartridge fuses in the 3AB/3AG package format with identical physical dimensions. The 1 mA current rating difference (31 mA vs. 32 mA) is within acceptable tolerance for slow-blow fuse operation and does not affect circuit protection performance.

Q: What is the difference between the Littelfuse and Eaton substitutes?

A: The Littelfuse 0313.031MXP matches the SCHURTER part's current rating more closely (31 mA vs. 32 mA) and maintains ROHS3 compliance. The Eaton BK/MDL-1/32 provides an exact 32 mA current rating match but is RoHS non-compliant and lacks specified breaking capacity and operating temperature data.

Q: Are these fuses physically interchangeable?

A: Yes. All three fuses share identical physical dimensions (0.250" Dia x 1.250" L / 6.35mm x 31.75mm) and the same 3AB/3AG package format, ensuring compatibility with standard fuse holders designed for this package type.

Q: Does the current rating difference between 31 mA and 32 mA affect circuit protection?

A: No. For slow-blow fuses, a 1 mA difference at this current level is within normal manufacturing tolerance and does not alter the fuse's protective function or response characteristics.

Q: Which substitute should be selected for new designs?

A: The Littelfuse 0313.031MXP is recommended for new designs due to its active production status, ROHS3 compliance, and complete specification data including breaking capacity and operating temperature range.