SCHURTER 7023.0950 Ceramic Fuse Equivalent & Substitute Parts

Part Overview

The SCHURTER 7023.0950 is a 6.3 A ceramic cartridge fuse rated for 250 V AC and 125 V DC operation. This component is classified as obsolete and requires a compatible fuse holder (3AB, 3AG format). Due to its obsolete status, equivalent substitute parts with active product availability are necessary for ongoing system maintenance and new design implementations. The substitute part maintains the same current rating and physical form factor while offering enhanced voltage ratings and active product support.

Substiute Parts

7023.0950

SCHURTER Inc.In Stock: 11547023.0950 Datasheet

Current PartRFQ

8020.5076

SCHURTER Inc.In Stock: 14738020.5076 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCHURTER 7023.0950 is based on the following critical parameters that must remain constant or be exceeded:

Mandatory Matching Parameters:

• Current Rating: 6.3 A (exact match required)
• Fuse Type: Cartridge, Ceramic (form factor compatibility)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (mechanical fit in existing holders)
• Response Time: Fast Blow (circuit protection characteristic)

Allowable Parameter Variations:

• Voltage Rating - AC: Substitute must equal or exceed 250 V AC
• Voltage Rating - DC: Substitute may differ if application permits
• Breaking Capacity: Substitute must equal or exceed rated values
• Operating Temperature Range: Substitute range may be narrower if application permits
• Product Status: Active status preferred for long-term availability

The SCHURTER 8020.5076 meets all mandatory matching parameters and exceeds voltage and breaking capacity specifications, qualifying it as a direct substitute for the obsolete 7023.0950.

Parameter Comparison

Engineering Selection Recommendations

SCHURTER 8020.5076 as Primary Substitute:

The SCHURTER 8020.5076 is the qualified substitute for the obsolete SCHURTER 7023.0950 based on the following engineering criteria:

1. Current Rating Equivalence: Both parts are rated at 6.3 A, ensuring identical circuit protection characteristics for the protected circuit.

2. Mechanical Compatibility: Identical package designation (3AB, 3AG, 1/4" x 1-1/4") and virtually identical physical dimensions (0.250" Dia x 1.252" L versus 1.260" L) ensure direct fit in existing fuse holders without modification.

3. Voltage Rating Enhancement: The substitute part is rated for 500 V AC and 500 V DC, exceeding the original 250 V AC and 125 V DC ratings. This enhancement provides greater design margin and applicability across a broader range of voltage systems.

4. Fast Blow Response: Both parts maintain fast blow response characteristics, preserving the original circuit protection speed and selectivity.

5. Active Product Status: The SCHURTER 8020.5076 carries active product status with cURus approval certification, ensuring long-term availability and compliance support compared to the obsolete original part.

6. Compliance Certification: The substitute part holds cURus certification (combined UL and CSA approval), providing recognized safety compliance for North American applications.

Application Considerations:

The substitute part is suitable for applications where the original 7023.0950 was specified, provided the application voltage does not exceed 500 V AC or 500 V DC. The narrower operating temperature range (-40°C ~ 85°C versus -40°C ~ 125°C) should be evaluated for high-temperature applications exceeding 85°C ambient conditions.

Frequently Asked Questions (FAQ)

Q: Can the SCHURTER 8020.5076 be used as a direct replacement for the SCHURTER 7023.0950?

A: Yes. Both parts share identical current ratings (6.3 A), fuse type (ceramic cartridge), response time (fast blow), and package designation (3AB, 3AG, 1/4" x 1-1/4"). The substitute part physically fits existing fuse holders and provides equivalent circuit protection function.

Q: What are the key differences between these two parts?

A: The primary differences are: (1) Voltage ratings—the substitute is rated for 500 V AC/DC versus the original 250 V AC/125 V DC; (2) Product status—the substitute is active while the original is obsolete; (3) Operating temperature range—the substitute operates to 85°C maximum versus 125°C for the original; (4) Approval certification—the substitute carries cURus certification versus GAM T1 for the original.

Q: Will the higher voltage rating of the substitute part affect circuit protection?

A: No. Voltage rating determines the maximum voltage at which the fuse can safely interrupt a circuit. A higher voltage rating does not change the current at which the fuse operates. Both parts will trip at 6.3 A regardless of voltage rating.

Q: Are the physical dimensions identical?

A: The dimensions are functionally equivalent. The substitute measures 0.250" Dia x 1.252" L (6.35mm x 31.80mm) versus the original 0.250" Dia x 1.260" L (6.35mm x 32.00mm). The 0.008" (0.20mm) length difference is within standard manufacturing tolerance and does not affect holder compatibility.

Q: What is the significance of the different approval agencies (GAM T1 versus cURus)?

A: GAM T1 represents German approval certification for the obsolete part. cURus represents combined UL (Underwriters Laboratories) and CSA (Canadian Standards Association) certification for the substitute part. The cURus certification provides broader North American and international recognition and is the current industry standard for ceramic fuse approval.

Q: Can the substitute part be used in applications with operating temperatures above 85°C?

A: The SCHURTER 8020.5076 is rated for operation only to 85°C maximum ambient temperature. Applications requiring operation above 85°C must use a substitute part with a higher temperature rating or retain the original part if still available. Consult the application requirements before substitution.

Q: Is the substitute part RoHS compliant?

A: Yes. The SCHURTER 8020.5076 is ROHS3 compliant and REACH unaffected, meeting current environmental and hazardous substance regulations.