SCHURTER 0034.5114 Equivalent & Substitute Parts

Part Overview

The SCHURTER 0034.5114 is a 250 mA, 250 V AC/DC fast-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 approved by CSA and UL standards.

Substiute Parts

0034.5114

SCHURTER Inc.In Stock: 11160034.5114 Datasheet

Current PartRFQ

0312.250HXCCP

Littelfuse Inc.In Stock: 9690312.250HXCCP Datasheet

SimilarRFQ

0312.250MXCCP

Littelfuse Inc.In Stock: 9570312.250MXCCP Datasheet

SimilarRFQ

0312.250MXP

Littelfuse Inc.In Stock: 106860312.250MXP Datasheet

SimilarRFQ

0312.250VXP

Littelfuse Inc.In Stock: 11210312.250VXP Datasheet

SimilarRFQ

FSA-250MA

OptiFuseIn Stock: 1126FSA-250MA Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SCHURTER 0034.5114 is determined by strict equivalence across the following critical parameters:

• Current Rating: 250 mA (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

All substitute parts listed below meet these core electrical and mechanical parameters. Substitute parts are grouped into two categories: direct manufacturer equivalents from Littelfuse Inc. (series 312) and parametric equivalents from OptiFuse (series FSA).

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts meet the core electrical and mechanical requirements for direct replacement of the SCHURTER 0034.5114. Selection should be based on the following factors:

Littelfuse 312 Series (0312.250HXCCP, 0312.250MXCCP, 0312.250MXP, 0312.250VXP): These parts are active products with expanded approval certifications (CE, CSA, UL) compared to the original SCHURTER part. The Littelfuse 312 series offers superior availability with inventory ranging from 900 to 10,583 units. These parts are recommended for applications requiring active product support and extended supply chain reliability.

OptiFuse FSA-250MA: This part is a parametric equivalent with active product status and cULus/UL 248 certification. The FSA series provides an alternative source for applications where Littelfuse parts are unavailable. Inventory availability is 1,093 units.

All substitute parts maintain compliance with ROHS3 and REACH requirements. Selection among active alternatives should prioritize availability and supply chain continuity for the intended application.

Frequently Asked Questions (FAQ)

Q: Can the SCHURTER 0034.5114 be directly replaced with any of the listed substitutes?

A: Yes. All listed substitute parts meet the critical electrical and mechanical parameters: 250 mA current rating, 250 V AC voltage rating, fast-blow response, glass cartridge type, and 3AB/3AG package format. Physical dimensions are equivalent within manufacturing tolerances.

Q: What is the difference between the Littelfuse 312 series variants (0312.250HXCCP, 0312.250MXCCP, 0312.250MXP, 0312.250VXP)?

A: All four Littelfuse 312 series parts are electrically and mechanically identical. They differ only in internal construction or packaging designation. All meet the same electrical specifications and certifications. Selection among these variants should be based on availability and internal company part numbering systems.

Q: Why is the SCHURTER 0034.5114 listed as obsolete?

A: The SCHURTER 0034.5114 is no longer in active production. Active substitute parts from Littelfuse and OptiFuse provide equivalent functionality with ongoing manufacturer support and supply availability.

Q: Are there any compliance differences between the original part and substitutes?

A: The original SCHURTER part carries CSA and UL approvals. Littelfuse 312 series parts carry CE, CSA, and UL approvals, providing broader regulatory coverage. OptiFuse FSA-250MA carries cULus and UL 248 certifications. All parts are ROHS3 compliant and REACH unaffected. Selection should confirm that the substitute's certifications meet the application's regulatory requirements.

Q: Can these fuses be used interchangeably in existing fuse holders?

A: Yes. All substitute parts conform to the 3AB/3AG package standard with 1/4" x 1-1/4" dimensions. They are mechanically compatible with any holder designed for this package format. Verify that the holder is rated for 250 V AC and 250 mA operation.

Q: What is the difference between fast-blow and other fuse response types?

A: Fast-blow fuses are designed to open quickly in response to overcurrent conditions. All parts listed here are fast-blow type, matching the original SCHURTER specification. This response characteristic is critical for circuit protection and must not be altered during substitution.