SCHURTER 7023.0930 Ceramic Fuse Cartridge – Equivalent & Substitute Parts

Part Overview

The SCHURTER 7023.0930 is a 4 A ceramic fuse cartridge rated for 250 V AC and 125 V DC operation. This component is classified as obsolete, requiring identification of active equivalent parts for continued system support and procurement. The fuse operates with fast-blow response characteristics and requires a compatible holder (3AB, 3AG format). Substitution is necessary due to the obsolete product status and limited availability of original inventory.

Substiute Parts

7023.0930

SCHURTER Inc.In Stock: 10837023.0930 Datasheet

Current PartRFQ

8020.5074

SCHURTER Inc.In Stock: 63608020.5074 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCHURTER 7023.0930 is based on the following critical parameters that must remain constant or be compatible with the application circuit:

Mandatory Matching Parameters:

• Current Rating: 4 A (identical)
• Fuse Type: Cartridge, Ceramic (identical)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (identical physical form factor)
• Response Time: Fast Blow (identical)
• Mounting Type: Requires Holder (identical)

Voltage Rating Considerations: The substitute part 8020.5074 provides higher voltage ratings (500 V AC) compared to the original part (250 V AC, 125 V DC). A higher voltage-rated fuse is electrically compatible in lower-voltage circuits, as the fuse will operate within its safe operating envelope. The substitute part does not specify a DC voltage rating; however, the higher AC rating provides margin for DC applications within the original 125 V DC specification.

Electrical Performance Parameters: Both parts maintain the 4 A current rating and fast-blow response characteristic. The substitute part exhibits a lower melting I²t value (14.6 versus 24), indicating faster thermal response. The substitute part's breaking capacity of 1.5 kA is lower than the original 10 kA AC rating; this parameter must be evaluated against the specific circuit protection requirements.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The SCHURTER 7023.0930 is classified as obsolete. The substitute part 8020.5074 maintains active product status with SCHURTER Inc., ensuring continued availability and manufacturing support. Selection of the active substitute part eliminates supply chain risk associated with obsolete component procurement.

Compliance and Certification: The original part carries GAM T1 approval. The substitute part 8020.5074 carries cURus certification, which represents a recognized safety approval standard. The substitute part is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.

Electrical Compatibility: Both parts share identical current ratings (4 A), fuse type (ceramic cartridge), response time (fast blow), and physical package format (3AB, 3AG, 1/4" x 1-1/4"). The substitute part's higher AC voltage rating (500 V versus 250 V) provides electrical compatibility in the original application circuit. The lower melting I²t value of the substitute part (14.6 versus 24) results in faster thermal response, which may alter circuit protection timing characteristics and must be evaluated against specific application requirements.

Temperature Operating Range: The substitute part operates over a reduced temperature range (-40°C to 85°C) compared to the original part (-40°C to 125°C). Applications requiring operation above 85°C are not compatible with the substitute part.

Breaking Capacity: The substitute part exhibits a lower breaking capacity (1.5 kA) than the original part (10 kA AC). Applications with fault currents exceeding 1.5 kA require evaluation of the substitute part's adequacy for circuit protection.

Frequently Asked Questions (FAQ)

Q: Can the SCHURTER 8020.5074 directly replace the 7023.0930 in all applications?

A: Direct replacement is possible only when the application circuit operates at or below 500 V AC, does not exceed 85°C ambient temperature, and has fault currents not exceeding 1.5 kA. The substitute part's lower melting I²t value (14.6 versus 24) results in faster thermal response, which may alter circuit protection timing. Applications with specific thermal response requirements must evaluate this parameter difference.

Q: What is the significance of the different melting I²t values?

A: The melting I²t parameter defines the thermal energy required to melt the fuse element. The substitute part's lower value (14.6 versus 24) indicates faster thermal response to overcurrent conditions. This difference may affect the time-current characteristic of the circuit protection scheme and must be considered in applications with sensitive load protection requirements.

Q: Are the physical dimensions compatible between the two parts?

A: Both parts use the identical 3AB, 3AG package format with 1/4" diameter. The length difference is minimal (1.260" original versus 1.252" substitute), representing a 0.008" variation. Both parts fit standard 3AB and 3AG fuse holders without modification.

Q: What approval standards apply to each part?

A: The original part carries GAM T1 approval. The substitute part carries cURus certification, which is recognized for electrical safety compliance. The substitute part is additionally ROHS3 compliant and REACH unaffected, meeting current environmental regulations.

Q: Is the substitute part suitable for DC applications?

A: The original part specifies 125 V DC rating. The substitute part does not specify a DC voltage rating. The substitute part's 500 V AC rating provides electrical margin for DC operation within the original 125 V DC specification; however, the absence of explicit DC rating specification requires application-specific evaluation.

Q: What is the impact of the reduced operating temperature range?

A: The substitute part operates from -40°C to 85°C, compared to the original part's -40°C to 125°C range. Applications requiring operation above 85°C ambient temperature are not compatible with the substitute part. Standard industrial applications typically operate within the substitute part's temperature range.

Q: How does the lower breaking capacity of the substitute part affect circuit protection?

A: The substitute part's breaking capacity is 1.5 kA, compared to the original part's 10 kA AC. Breaking capacity defines the maximum fault current the fuse can safely interrupt. Applications with fault currents exceeding 1.5 kA require evaluation of whether the substitute part provides adequate protection or if alternative components are necessary.