GSA 5 Ceramic Fuse Equivalent & Substitute Parts

Part Overview

The GSA 5 is a 5A 250VAC ceramic cartridge fuse manufactured by Bel Fuse Inc., designed for 3AB and 3AG holder applications with dimensions of 1/4" x 1-1/4". The main part (GSA 5) carries an obsolete product status, making substitute parts necessary for ongoing system maintenance and new designs. Active equivalent and substitute parts are available from multiple manufacturers with matching or compatible electrical and mechanical specifications.

Substiute Parts

GSA 5

Bel Fuse Inc.In Stock: 628GSA 5 Datasheet

Current PartRFQ

GSA 5-R

Bel Fuse Inc.In Stock: 2418GSA 5-R Datasheet

DirectRFQ

0001.2511

SCHURTER Inc.In Stock: 64240001.2511 Datasheet

SimilarRFQ

TCA-5A

OptiFuseIn Stock: 9645TCA-5A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the GSA 5 are classified based on electrical parameter compatibility and mechanical form factor alignment:

Direct Manufacturer Equivalent (GSA 5-R): Identical electrical specifications (5A, 250VAC, Slow Blow, 200A breaking capacity) and mechanical package (3AB, 3AG, 1/4" x 1-1/4"). Active product status with RoHS3 compliance. Differs only in packaging format (Bulk vs. standard) and minor DC cold resistance variance (0.029 Ohms vs. 0.03 Ohms).

Similar Manufacturer Part (0001.2511 by SCHURTER): Matches core electrical parameters (5A, 250VAC, Slow Blow) and operating temperature range. Mechanical package differs (5mm x 20mm vs. 3AB/3AG 1/4" x 1-1/4"), requiring different holder compatibility. Breaking capacity and melting I²t values differ due to form factor variation.

Parametric Equivalent (TCA-5A by OptiFuse): Identical electrical specifications (5A, 250VAC, Slow Blow, 200A breaking capacity) and mechanical package (3AB, 3AG, 1/4" x 1-1/4"). Active product status with RoHS3 compliance and cULus/UL 248 certification.

Parameter Comparison

Engineering Selection Recommendations

For direct replacement with identical form factor and electrical performance: GSA 5-R (Bel Fuse Inc.) or TCA-5A (OptiFuse) are suitable selections. Both maintain the 3AB/3AG package, 5A/250VAC rating, and 200A breaking capacity. GSA 5-R provides continuity within the Bel Fuse product line. TCA-5A offers an alternative from OptiFuse with equivalent specifications and active product status.

For applications requiring different form factor: 0001.2511 (SCHURTER Inc.) provides a 5A/250VAC ceramic fuse in 5mm x 20mm package. This substitution requires mechanical redesign of the holder interface and is suitable only when the smaller form factor is advantageous and holder compatibility can be accommodated.

For regulatory compliance: All active substitute parts (GSA 5-R, 0001.2511, TCA-5A) carry RoHS3 compliance, addressing environmental and regulatory requirements that the obsolete GSA 5 does not meet.

Frequently Asked Questions (FAQ)

Q: Can GSA 5-R directly replace GSA 5 in existing designs? A: Yes. GSA 5-R maintains identical electrical specifications (5A, 250VAC, Slow Blow), breaking capacity (200A), and mechanical package (3AB, 3AG, 1/4" x 1-1/4"). No design modification is required.

Q: What is the difference between GSA 5 and GSA 5-R? A: Both are manufactured by Bel Fuse Inc. with identical electrical and mechanical parameters. GSA 5 is obsolete; GSA 5-R is active. GSA 5-R includes RoHS3 compliance and differs minimally in DC cold resistance (0.029 Ohms vs. 0.03 Ohms).

Q: Can TCA-5A replace GSA 5? A: Yes. TCA-5A (OptiFuse) provides identical electrical specifications (5A, 250VAC, Slow Blow, 200A breaking capacity) and mechanical package (3AB, 3AG, 1/4" x 1-1/4"). It is an active product with RoHS3 compliance.

Q: Is 0001.2511 a suitable replacement for GSA 5? A: 0001.2511 matches the core electrical parameters (5A, 250VAC, Slow Blow) but uses a different mechanical package (5mm x 20mm vs. 3AB/3AG 1/4" x 1-1/4"). Substitution requires mechanical redesign of the holder interface and is not a direct replacement.

Q: What certifications do the substitute parts carry? A: GSA 5-R carries CE, CSA, cURus, and PSE certifications. TCA-5A carries cULus and UL 248 certifications. 0001.2511 carries CCC, cURus, KC, PSE/JET, and VDE certifications. All are suitable for their respective regulatory jurisdictions.

Q: Are all substitute parts RoHS compliant? A: Yes. GSA 5-R, TCA-5A, and 0001.2511 are all RoHS3 compliant. The original GSA 5 is RoHS non-compliant.