GSA 2-R Ceramic Fuse Equivalent & Substitute Parts

Part Overview

The GSA 2-R is a 2A 250VAC ceramic cartridge fuse manufactured by Bel Fuse Inc., designed for circuit protection in applications requiring slow-blow response characteristics. This fuse operates across a temperature range of -55°C to 125°C and is housed in a 3AB/3AG form factor (1/4" x 1-1/4"). The part maintains active product status with full compliance to CE, CSA, cULus, and PSE approval agencies. Equivalent substitute parts are identified based on matching electrical ratings, mechanical dimensions, response time characteristics, and holder compatibility.

Substiute Parts

GSA 2-R

Bel Fuse Inc.In Stock: 1758GSA 2-R Datasheet

Current PartRFQ

0326002.MXP

Littelfuse Inc.In Stock: 13250326002.MXP Datasheet

DirectRFQ

TCA-2A

OptiFuseIn Stock: 4208TCA-2A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the GSA 2-R are qualified based on the following critical parameters:

• Current Rating: 2 A (exact match required)
• Voltage Rating - AC: 250 V (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 for holder compatibility)
• Operating Temperature Range: -55°C ~ 125°C (minimum requirement)
• RoHS Compliance: ROHS3 Compliant (regulatory requirement)

All identified substitutes meet these core electrical and mechanical parameters, ensuring direct interchangeability within applications designed for the GSA 2-R.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status and full RoHS3 compliance. Selection between GSA 2-R, 0326002.MXP, and TCA-2A is determined by application-specific requirements and certification needs.

The GSA 2-R and TCA-2A are functionally equivalent for AC-only applications, both rated at 250VAC with 100A breaking capacity and matching dimensional specifications. Both carry cULus certification.

The 0326002.MXP (Littelfuse) provides extended DC voltage rating of 125V and higher DC breaking capacity (10kA), making it suitable for dual AC/DC applications. This part carries UL and PSE certifications in addition to CE and CSA.

For applications requiring specific manufacturer certifications or dual AC/DC voltage ratings, the 0326002.MXP offers enhanced capability. For AC-only applications, GSA 2-R and TCA-2A provide equivalent performance with established supply availability.

Frequently Asked Questions (FAQ)

Q: Can 0326002.MXP replace GSA 2-R in an AC-only circuit?

A: Yes. The 0326002.MXP meets all AC electrical parameters (2A, 250VAC) and mechanical requirements (3AB/3AG package, 1/4" x 1-1/4" dimensions). The additional DC voltage rating does not affect AC performance.

Q: Are there dimensional differences between these substitutes?

A: GSA 2-R and TCA-2A share identical dimensions (0.250" Dia x 1.252" L). The 0326002.MXP has a slightly shorter length (1.250" vs 1.252"), but both dimensions fall within the 3AB/3AG standard and are compatible with standard holders.

Q: Which substitute has the best availability?

A: Current inventory levels are: TCA-2A (4195 pcs), GSA 2-R (1716 pcs), and 0326002.MXP (1250 pcs). Availability may vary by distributor and time.

Q: What is the difference in DC cold resistance between parts?

A: GSA 2-R measures 0.115 Ohms and 0326002.MXP measures 0.121 Ohms. This 5% difference is within normal manufacturing tolerance for ceramic fuses and does not affect circuit protection performance.

Q: Can TCA-2A be used in applications requiring DC voltage rating?

A: TCA-2A does not specify a DC voltage rating. For applications requiring documented DC performance, 0326002.MXP (125VDC rated) is the appropriate choice.

Q: Are all substitutes RoHS compliant?

A: Yes. GSA 2-R, 0326002.MXP, and TCA-2A are all ROHS3 compliant.