GSA 6 Ceramic Fuse Equivalent & Substitute Parts

Part Overview

The GSA 6 is a 6 A, 250 V AC/DC ceramic cartridge fuse manufactured by Bel Fuse Inc., designed for 3AB and 3AG holder applications. This component features slow-blow response characteristics and a breaking capacity of 200 A at rated voltage. The GSA 6 is classified as obsolete, making identification of active equivalent and substitute parts essential for ongoing system maintenance and new design implementations. Equivalent alternatives maintain identical electrical and mechanical specifications while offering current product availability and compliance status.

Substiute Parts

GSA 6

Bel Fuse Inc.In Stock: 753GSA 6 Datasheet

Current PartRFQ

GSA 6-R

Bel Fuse Inc.In Stock: 2028GSA 6-R Datasheet

DirectRFQ

BK/MDA-6-R

Eaton - Electronics DivisionIn Stock: 805BK/MDA-6-R Datasheet

SimilarRFQ

MDA-6-R

Eaton - Electronics DivisionIn Stock: 828MDA-6-R Datasheet

SimilarRFQ

TCA-6A

OptiFuseIn Stock: 8642TCA-6A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the GSA 6 is determined by strict equivalence across the following critical parameters:

• Current Rating: 6 A (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Breaking Capacity: 200 A at rated voltage (exact match required)

All substitute parts listed maintain these specifications. Variations in secondary parameters such as DC cold resistance, melting I²t values, and dimensional tolerances within the specified package do not affect functional interchangeability within the defined holder system.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain electrical and mechanical equivalence to the GSA 6. Selection among active alternatives should be based on the following criteria:

GSA 6-R (Bel Fuse Inc.): Direct manufacturer successor to the obsolete GSA 6. Maintains identical specifications with improved RoHS3 compliance and active product status. Recommended for applications requiring continuity with original design intent.

BK/MDA-6-R and MDA-6-R (Eaton - Electronics Division): Active alternatives from established manufacturer. Both parts meet all critical electrical parameters and holder compatibility requirements. MDA-6-R offers equivalent performance to BK/MDA-6-R with identical specifications.

TCA-6A (OptiFuse): Parametric equivalent meeting all functional requirements. Offers highest inventory availability and UL 248 certification. Suitable for applications where manufacturer diversity is beneficial.

All substitute parts carry current regulatory approvals (CE, CSA, UL certifications) and RoHS3 compliance, ensuring compatibility with modern procurement and environmental standards.

Frequently Asked Questions (FAQ)

Q: Can GSA 6-R be used as a direct replacement for the obsolete GSA 6?

A: Yes. GSA 6-R maintains identical electrical specifications (6 A, 250 V AC, slow-blow response) and mechanical package (3AB, 3AG, 1/4" x 1-1/4"). Both parts are compatible with the same holder systems. GSA 6-R is the active equivalent from the original manufacturer.

Q: What is the difference between BK/MDA-6-R and MDA-6-R?

A: Both parts are manufactured by Eaton and meet identical electrical and mechanical specifications. The designation difference reflects internal product coding. Both are functionally interchangeable for the GSA 6 application.

Q: Are all substitute parts compatible with 3AB and 3AG holders?

A: Yes. All listed substitutes maintain the 3AB, 3AG, 1/4" x 1-1/4" package specification, ensuring mechanical and electrical compatibility with existing holder systems.

Q: Does the difference in DC cold resistance between parts affect substitution?

A: No. DC cold resistance variations (0.018 to 0.019 Ohms) fall within acceptable tolerance for ceramic cartridge fuses and do not impact functional performance or holder compatibility.

Q: Which substitute part offers the best regulatory compliance?

A: GSA 6-R and TCA-6A both carry comprehensive certifications. GSA 6-R includes PSE approval in addition to CE, CSA, and cURus. TCA-6A carries UL 248 certification. Selection depends on specific regional or application requirements.

Q: Can I use TCA-6A in place of GSA 6 in legacy systems?

A: Yes. TCA-6A meets all critical electrical parameters (6 A, 250 V AC, slow-blow, 200 A breaking capacity) and package requirements (3AB, 3AG, 1/4" x 1-1/4"). Functional interchangeability is assured.