SCHURTER 0034.3420 Equivalent & Substitute Parts

Part Overview

The SCHURTER 0034.3420 is a 2 A, 250 V AC/DC slow-blow glass cartridge fuse with 3AB/3AG package configuration and 1/4" x 1-1/4" dimensions. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new designs. The fuse requires a compatible holder for installation and operates across a temperature range of -55°C to 125°C with CE approval.

Substiute Parts

0034.3420

SCHURTER Inc.In Stock: 10460034.3420 Datasheet

Current PartRFQ

8020.5014

SCHURTER Inc.In Stock: 19748020.5014 Datasheet

SimilarRFQ

0034.5231

SCHURTER Inc.In Stock: 15430034.5231 Datasheet

Parametric EquivalentRFQ

0313002.MXP

Littelfuse Inc.In Stock: 17850313002.MXP Datasheet

DirectRFQ

0313002.HXIDP

Littelfuse Inc.In Stock: 11580313002.HXIDP Datasheet

Parametric EquivalentRFQ

0313002.HXP

Littelfuse Inc.In Stock: 16140313002.HXP Datasheet

Parametric EquivalentRFQ

0313002.VXIDP

Littelfuse Inc.In Stock: 9250313002.VXIDP Datasheet

Parametric EquivalentRFQ

0313002.VXP

LittelfuseIn Stock: 8100313002.VXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 0034.3420 is determined by the following critical parameters:

• Current Rating: 2 A (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Fuse Type: Cartridge, Glass (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 (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (minimum requirement)

Substitute parts are grouped into two categories:

Parametric Equivalents (Same Electrical and Mechanical Specifications): Parts that match all critical parameters and maintain identical form factor and electrical characteristics. These include SCHURTER 0034.5231 and Littelfuse 313 series parts (0313002.HXP, 0313002.MXP, 0313002.VXP, 0313002.HXIDP, 0313002.VXIDP).

Similar Alternative (Different Fuse Material): SCHURTER 8020.5014 is a ceramic cartridge fuse with identical current rating and form factor but operates at 500 V AC and is not recommended as a direct substitute due to material and voltage differences.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Status): The Littelfuse 313 series parts (0313002.MXP, 0313002.HXP, 0313002.VXP, 0313002.HXIDP, 0313002.VXIDP) are recommended as primary substitutes. All are active products with expanded approval certifications (CE, CSA, PSE, UL) compared to the original 0034.3420 (CE only). These parts maintain identical electrical and mechanical specifications while offering higher breaking capacity (100 A vs. 35 A) and improved melting I²t characteristics (77 vs. 27).

Secondary Substitute (Obsolete Status): SCHURTER 0034.5231 is a parametric equivalent with identical specifications to the original part but shares obsolete product status. This part is suitable only when active alternatives are unavailable.

Not Recommended: SCHURTER 8020.5014 (ceramic cartridge fuse, 500 V AC) differs in material composition and voltage rating and is not a direct substitute despite matching current rating and form factor.

Frequently Asked Questions (FAQ)

Q: Can I use Littelfuse 313 series fuses as direct replacements for the SCHURTER 0034.3420?

A: Yes. The Littelfuse 0313002.MXP, 0313002.HXP, 0313002.VXP, 0313002.HXIDP, and 0313002.VXIDP are parametric equivalents with identical current rating (2 A), voltage rating (250 V AC), fuse type (cartridge, glass), response time (slow blow), package configuration (3AB, 3AG), and physical dimensions (0.250" Dia x 1.250" L). All operate within the same temperature range (-55°C to 125°C) and are ROHS3 compliant.

Q: What is the difference between the Littelfuse 313 series variants?

A: All five Littelfuse variants (0313002.MXP, 0313002.HXP, 0313002.VXP, 0313002.HXIDP, 0313002.VXIDP) share identical electrical and mechanical specifications. Differences are limited to internal construction or packaging designations. Selection among these variants depends on specific procurement or application requirements not defined by electrical parameters.

Q: Why does SCHURTER 8020.5014 appear in the substitute list if it is not recommended?

A: SCHURTER 8020.5014 is listed as a similar alternative due to matching current rating (2 A) and form factor (cartridge, slow blow). However, it is a ceramic fuse rated for 500 V AC, which differs fundamentally from the glass fuse design and 250 V AC rating of the 0034.3420. This part is not a direct substitute and is included only for reference.

Q: What are the key differences in breaking capacity and melting I²t between the original and substitute parts?

A: The original 0034.3420 has a breaking capacity of 35 A and melting I²t of 27. All Littelfuse 313 series substitutes have a breaking capacity of 100 A and melting I²t of 77, indicating improved fault protection characteristics. SCHURTER 0034.5231 has a breaking capacity of 100 A and melting I²t of 47.1. These differences do not affect compatibility but indicate enhanced performance in the substitute parts.

Q: Are all substitute parts ROHS3 compliant and REACH unaffected?

A: Yes. All listed substitute parts (SCHURTER 0034.5231 and all Littelfuse 313 series variants) are ROHS3 compliant and REACH unaffected, matching the compliance status of the original 0034.3420.

Q: What certifications do the substitute parts carry?

A: SCHURTER 0034.5231 carries CSA and UL certifications. All Littelfuse 313 series parts (0313002.MXP, 0313002.HXP, 0313002.VXP, 0313002.HXIDP, 0313002.VXIDP) carry CE, CSA, PSE, and UL certifications, providing broader regulatory coverage than the original part (CE only).