GSA 7 Ceramic Fuse Equivalent & Substitute Parts

Part Overview

The GSA 7 is a 7 A, 250 V AC/DC ceramic cartridge fuse manufactured by Bel Fuse Inc., designed for applications requiring slow-blow response characteristics. The main part (GSA 7) carries an obsolete product status, making identification of active equivalent alternatives essential for procurement and design continuity. Substitute parts must maintain identical electrical ratings, mechanical dimensions, and holder compatibility to ensure direct interchangeability in existing circuit protection designs.

Substiute Parts

GSA 7

Bel Fuse Inc.In Stock: 1132GSA 7 Datasheet

Current PartRFQ

GSA 7-R

Bel Fuse Inc.In Stock: 1032GSA 7-R Datasheet

DirectRFQ

0326007.HXP

LittelfuseIn Stock: 8650326007.HXP Datasheet

SimilarRFQ

TCA-7A

OptiFuseIn Stock: 2575TCA-7A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters:

• Current Rating: 7 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)
• Mounting Type: Requires Holder (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (minimum requirement)

All substitute parts listed below satisfy these criteria and are mechanically and electrically compatible with the GSA 7 in holder-based circuit protection applications.

Parameter Comparison

Engineering Selection Recommendations

GSA 7-R (Bel Fuse Inc.) is the direct manufacturer equivalent, maintaining identical electrical and mechanical specifications while offering active product status and ROHS3 compliance. This part is the primary substitute for GSA 7 applications.

0326007.HXP (Littelfuse) provides cross-manufacturer equivalence with active status and ROHS3 compliance. This part is suitable for applications where multi-source procurement is required.

TCA-7A (OptiFuse) offers parametric equivalence with active status and ROHS3 compliance. This part is suitable for applications where alternative manufacturer sourcing is acceptable.

All three substitute parts maintain compatibility with 3AB and 3AG holder types and satisfy the electrical and thermal requirements of the GSA 7 specification.

Frequently Asked Questions (FAQ)

Q: Can GSA 7-R be used as a direct replacement for GSA 7?

A: Yes. GSA 7-R maintains identical current rating (7 A), voltage rating (250 V AC), fuse type (ceramic cartridge), response time (slow blow), package dimensions (3AB, 3AG, 1/4" x 1-1/4"), and operating temperature range (-55°C ~ 125°C). The part is mechanically and electrically interchangeable in all holder-based applications.

Q: What is the difference between GSA 7 and GSA 7-R?

A: GSA 7 is obsolete; GSA 7-R is active. GSA 7-R is ROHS3 compliant, while GSA 7 is non-compliant. All electrical and mechanical parameters are identical.

Q: Are Littelfuse 0326007.HXP and OptiFuse TCA-7A compatible with GSA 7 holders?

A: Yes. Both parts conform to the 3AB and 3AG package standard with identical dimensions (0.250" Dia x 1.252" L). They are mechanically compatible with standard ceramic fuse holders designed for this package type.

Q: Which substitute part should be selected for new designs?

A: GSA 7-R, 0326007.HXP, or TCA-7A are all suitable for new designs. Selection should be based on manufacturer preference, supply chain availability, and procurement requirements. All three parts are active and ROHS3 compliant.

Q: Are there any electrical performance differences between the substitute parts?

A: All substitute parts meet the core electrical requirements: 7 A current rating, 250 V AC voltage rating, and slow-blow response. Differences in breaking capacity and melting I²t values do not affect interchangeability in standard circuit protection applications where the fuse rating matches the circuit design specification.