SCHURTER 7040.3140 Equivalent & Substitute Parts

Part Overview

The SCHURTER 7040.3140 is a 3.15A 125VAC glass cartridge fuse in 5mm x 20mm package format, designed for applications requiring slow-blow response characteristics. This part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs. The substitute part maintains the same current rating and physical dimensions while offering enhanced voltage ratings and broader international certifications.

Substiute Parts

7040.3140

SCHURTER Inc.In Stock: 7087040.3140 Datasheet

Current PartRFQ

0001.2509

SCHURTER Inc.In Stock: 388110001.2509 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The SCHURTER 0001.2509 qualifies as a functional substitute based on the following critical parameters:

• Current Rating Match: Both parts are rated at 3.15 A, ensuring identical load protection characteristics
• Physical Compatibility: Both utilize the 5mm x 20mm cartridge format, compatible with standard fuse holders
• Response Characteristic: Both employ slow-blow response, maintaining circuit protection behavior
• Mounting Configuration: Both require external holder assemblies, with no change to installation methodology

The substitute part exceeds the original specification in voltage rating (250VAC/300VDC versus 125VAC) and breaking capacity (1.5kA versus 100A), making it suitable for applications operating at or below the original voltage specification.

Parameter Comparison

Engineering Selection Recommendations

The SCHURTER 0001.2509 is the designated substitute for the obsolete 7040.3140. Selection is based on:

• Product Status: The substitute is active production, ensuring long-term availability and supply chain continuity
• Regulatory Compliance: The substitute carries expanded international certifications (CCC, cURus, KC, PSE/JET, VDE) compared to the original (UR only), providing broader market acceptance
• Electrical Compatibility: The substitute's higher voltage and breaking capacity ratings ensure safe operation in applications designed for the original part
• Physical Interchangeability: Identical 5mm x 20mm package dimensions and holder requirements eliminate mechanical redesign requirements
• Environmental Specification: The substitute's extended operating temperature range (-55°C ~ 125°C) accommodates a broader range of deployment scenarios

Frequently Asked Questions (FAQ)

Q: Can the 0001.2509 be used as a direct replacement in existing designs? A: Yes. The 0001.2509 maintains identical current rating, response time, and physical dimensions. It is mechanically and electrically compatible with existing fuse holder assemblies designed for the 7040.3140.

Q: What is the difference between glass and ceramic fuse construction? A: The original uses glass construction; the substitute uses ceramic construction. Both are cartridge fuse types with identical current ratings and response characteristics. Ceramic construction provides enhanced breaking capacity and thermal performance.

Q: Does the higher voltage rating of the substitute affect circuit protection? A: No. The substitute's 250VAC/300VDC rating exceeds the original 125VAC specification. When applied in circuits operating at or below 125VAC, the protection characteristics remain equivalent to the original design.

Q: Are there inventory considerations for this substitution? A: The substitute (0001.2509) is in active production with 38,761 units in stock, compared to the obsolete original with 692 units remaining. The substitute ensures long-term availability for production and service applications.

Q: What certifications apply to the substitute part? A: The 0001.2509 carries CCC, cURus, KC, PSE/JET, and VDE approvals, providing compliance for international markets including Asia-Pacific, North America, and European regions.