SCHURTER 0034.5247.PT Equivalent & Substitute Parts

Part Overview

The SCHURTER 0034.5247.PT is a 15 A, 125 V AC/DC slow-blow glass cartridge fuse in the FST 6.3x32 series, designed for applications requiring a 3AB/3AG holder format with 1/4" x 1-1/4" dimensions. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing system maintenance and new designs. The fuse provides 10 kA breaking capacity at rated voltage and operates across a temperature range of -55°C to 125°C with CSA and UL approval.

Substiute Parts

0034.5247.PT

SCHURTER Inc.In Stock: 9680034.5247.PT Datasheet

Current PartRFQ

8020.5023

SCHURTER Inc.In Stock: 14708020.5023 Datasheet

SimilarRFQ

0315015.MXP

Littelfuse Inc.In Stock: 23180315015.MXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SCHURTER 0034.5247.PT are evaluated based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Fuse type classification (Cartridge, Glass)
• Current rating (15 A nominal)
• Response time characteristic (Slow Blow)
• Physical package format (3AB, 3AG holder compatibility)
• Physical dimensions (1/4" x 1-1/4" form factor)
• Voltage rating capability (minimum 125 V AC)
• Operating temperature range overlap
• Approval agency certifications

Substitution Logic:

The Littelfuse 0315015.MXP qualifies as a direct substitute based on matching current rating (15 A), fuse type (Cartridge, Glass), response time (Slow Blow), package format (3AB, 3AG, 1/4" x 1-1/4"), and operating temperature range (-55°C ~ 125°C). This part is active in production status, providing continuity for the obsolete SCHURTER component. The 0315015.MXP carries UL approval and maintains dimensional compatibility with existing holder installations.

The SCHURTER 8020.5023 represents a non-equivalent alternative due to fundamental differences in fuse material (Ceramic vs. Glass), voltage rating (400 V AC/DC vs. 125 V AC), current rating (16 A vs. 15 A), and package format (Non-Standard vs. 3AB/3AG). This part does not satisfy substitution requirements for the primary application.

Parameter Comparison

Engineering Selection Recommendations

Littelfuse 0315015.MXP - Recommended Substitute

The Littelfuse 0315015.MXP is the appropriate substitute for the obsolete SCHURTER 0034.5247.PT. This selection is based on:

• Identical current rating (15 A) and response time (Slow Blow)
• Matching fuse type (Cartridge, Glass) and holder format (3AB, 3AG)
• Identical operating temperature range (-55°C ~ 125°C)
• Active production status ensuring long-term availability
• UL approval certification for regulatory compliance
• RoHS3 compliance and REACH unaffected status for environmental standards
• Physical package compatibility with existing 3AB/3AG holder installations

The 0315015.MXP carries a lower voltage rating (32 V AC vs. 125 V AC). Applications operating at or below 32 V AC can utilize this substitute without modification. Applications requiring 125 V AC operation must evaluate the voltage derating impact on system performance.

SCHURTER 8020.5023 - Not Recommended

The SCHURTER 8020.5023 does not qualify as a substitute due to incompatible fuse material (Ceramic), non-standard package format, and significantly different voltage rating (400 V AC/DC). This part is unsuitable for direct replacement in applications designed for the 0034.5247.PT.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 0315015.MXP be used as a direct replacement in all applications using the SCHURTER 0034.5247.PT?

A: The 0315015.MXP is mechanically and electrically compatible for holder installation and current rating. However, the voltage rating difference (32 V AC vs. 125 V AC) requires circuit evaluation. Applications operating at 32 V AC or lower can use this substitute without modification. Applications requiring 125 V AC operation must assess whether the lower voltage rating affects system protection characteristics.

Q: What is the significance of the different melting I²t values between the main part and substitute?

A: The melting I²t value (3377 for the main part vs. 1870 for the substitute) indicates the thermal energy required to melt the fuse element. The lower I²t of the substitute results in faster thermal response at equivalent current levels. This difference may affect nuisance trip behavior in circuits with high inrush currents. Circuit analysis is necessary to confirm compatibility.

Q: Are there dimensional differences between the main part and the Littelfuse substitute?

A: Yes. The SCHURTER 0034.5247.PT measures 0.250" Dia x 1.252" L, while the Littelfuse 0315015.MXP measures 0.275" Dia x 1.275" L. Both parts use the 3AB/3AG holder format and 1/4" x 1-1/4" package designation. The slight dimensional variation is within standard tolerance for this holder type and does not prevent installation.

Q: Why is the SCHURTER 8020.5023 listed as a non-equivalent alternative?

A: The 8020.5023 differs fundamentally in fuse material (Ceramic vs. Glass), voltage rating (400 V vs. 125 V), current rating (16 A vs. 15 A), and package format (Non-Standard vs. 3AB/3AG). These differences make it unsuitable for direct replacement in applications designed for the 0034.5247.PT.

Q: What approval certifications should be verified when selecting a substitute?

A: The main part carries CSA and UL approvals. The Littelfuse substitute carries UL approval. Verify that the selected substitute meets all regulatory requirements for your specific application and jurisdiction. The 0315015.MXP is RoHS3 compliant and REACH unaffected, meeting current environmental standards.

Q: How does the active production status of the Littelfuse substitute benefit long-term component sourcing?

A: The Littelfuse 0315015.MXP is classified as active in production, ensuring continued availability for future procurement. The SCHURTER 0034.5247.PT is obsolete, meaning production has ended and inventory is limited. Transitioning to the active substitute provides supply chain continuity and reduces the risk of component unavailability.