SCHURTER 0034.1002 Equivalent & Substitute Parts

Part Overview

The SCHURTER 0034.1002 is a 2A 250VAC fast-blow glass cartridge fuse in the 3AB/3AG package format (6.35mm × 31.80mm). This component is classified as obsolete, making substitute parts necessary for ongoing system maintenance and new designs. The fuse requires a compatible holder and is designed for general-purpose circuit protection applications operating between -40°C and 85°C.

Substiute Parts

0034.1002

SCHURTER Inc.In Stock: 11680034.1002 Datasheet

Current PartRFQ

8020.5071

SCHURTER Inc.In Stock: 16018020.5071 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCHURTER 0034.1002 is determined by the following critical parameters:

Mandatory Compatibility Parameters:

• Current Rating: 2 A (must match exactly)
• Package / Case: 3AB, 3AG, 1/4" × 1-1/4" (physical and holder compatibility)
• Response Time: Fast Blow (functional characteristic)
• Mounting Type: Requires Holder (installation method)
• Operating Temperature Range: -40°C to 85°C (environmental tolerance)

Allowable Variation Parameters:

• Voltage Rating (AC): May be equal to or greater than 250 V
• Fuse Type: May differ (glass to ceramic acceptable with same electrical performance)
• Breaking Capacity: May be equal to or greater than 1.5 kA
• Melting I²t: May be equal to or greater than 1.2

The substitute part SCHURTER 8020.5071 meets all mandatory compatibility requirements while offering enhanced voltage rating (500 V) and improved melting I²t characteristics (2 vs. 1.2).

Parameter Comparison

Engineering Selection Recommendations

The SCHURTER 8020.5071 is the direct substitute for the obsolete SCHURTER 0034.1002. Selection is based on the following engineering criteria:

Product Status: The 0034.1002 is obsolete, while the 8020.5071 is active and currently in production, ensuring long-term availability and supply chain continuity.

Electrical Compatibility: Both parts maintain identical current ratings (2 A) and response characteristics (fast blow). The 8020.5071 provides a higher voltage rating (500 V vs. 250 V), which is acceptable for applications originally designed for 250 V operation.

Physical Compatibility: Both parts use the identical 3AB/3AG package format (6.35mm × 31.80mm) and require the same holder type, ensuring direct mechanical interchangeability without modification to existing installations.

Compliance & Certification: The 8020.5071 carries cURus approval in addition to ROHS3 compliance, providing enhanced regulatory coverage compared to the main part.

Material Upgrade: The ceramic construction of the 8020.5071 offers improved thermal stability and higher melting I²t (2 vs. 1.2), providing enhanced protection characteristics while maintaining fast-blow response.

Frequently Asked Questions (FAQ)

Q: Can the SCHURTER 8020.5071 be used as a direct replacement for the 0034.1002?

A: Yes. Both parts share identical current ratings (2 A), response time (fast blow), package format (3AB/3AG), and operating temperature range (-40°C to 85°C). The 8020.5071 is physically and electrically compatible with existing holders and circuit designs.

Q: What is the difference between glass and ceramic fuse construction?

A: The 0034.1002 uses glass construction, while the 8020.5071 uses ceramic construction. Both are cartridge fuses with identical electrical performance in this application. Ceramic construction provides improved thermal characteristics and higher melting I²t values.

Q: Does the higher voltage rating (500 V) of the 8020.5071 affect its use in 250 V circuits?

A: No. A fuse rated for 500 V can be safely used in circuits rated for 250 V. The higher voltage rating indicates the fuse can withstand higher voltage stress without degradation. Current rating and response time remain the controlling factors for circuit protection.

Q: Are both parts RoHS compliant?

A: Yes. Both the 0034.1002 and 8020.5071 are ROHS3 compliant. The 8020.5071 additionally carries cURus certification.

Q: What is the significance of the melting I²t parameter?

A: Melting I²t indicates the thermal energy required to melt the fuse element. The 8020.5071 has a higher melting I²t (2 vs. 1.2), providing improved tolerance to transient overcurrent conditions while maintaining fast-blow response characteristics.

Q: Will the 8020.5071 fit in existing 3AB/3AG fuse holders?

A: Yes. Both parts use the identical 3AB/3AG package format with dimensions of 0.250" diameter × 1.252" length (6.35mm × 31.80mm). No holder modification is required.