GSA 750-R Equivalent & Substitute Parts

Part Overview

The GSA 750-R is a 750 mA ceramic cartridge fuse rated for 250 V AC operation with slow-blow response characteristics. Manufactured by Bel Fuse Inc., this component is designed for applications requiring overcurrent protection in AC circuits. The fuse requires a standard 3AB/3AG holder and operates across a temperature range of -55°C to 125°C. This part maintains active product status with full compliance to CE, CSA, and cULus standards. Substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity while maintaining equivalent electrical and mechanical performance.

Substiute Parts

GSA 750-R

Bel Fuse Inc.In Stock: 1503GSA 750-R Datasheet

Current PartRFQ

0326.750HXP

Littelfuse Inc.In Stock: 9860326.750HXP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the GSA 750-R is determined by strict alignment of the following parameters:

• Current Rating: Must be 750 mA
• Voltage Rating - AC: Must be 250 V minimum
• Fuse Type: Must be Cartridge, Ceramic
• Response Time: Must be Slow Blow
• Package / Case: Must be 3AB, 3AG, 1/4" x 1-1/4" form factor
• Mounting Type: Must require standard holder compatibility
• Operating Temperature Range: Must support -55°C to 125°C minimum
• RoHS Compliance: Must maintain ROHS3 Compliant status

The substitute part 0326.750HXP (Littelfuse Inc., Series 326) meets all substitution criteria. This part maintains identical current rating, AC voltage rating, ceramic cartridge construction, slow-blow response, and mechanical package specifications. Both parts are active products with equivalent regulatory approvals and environmental compliance.

Parameter Comparison

Engineering Selection Recommendations

Both the GSA 750-R and 0326.750HXP are active products with equivalent electrical specifications for AC circuit protection applications. Selection between these parts should be based on:

Regulatory Compliance: The GSA 750-R carries cULus certification, while the 0326.750HXP carries UL certification. Both meet CE and CSA requirements. Applications requiring specific certification bodies should reference the applicable approval agency for the end-use circuit.

DC Voltage Capability: The 0326.750HXP provides an additional 125 V DC rating, making it suitable for dual-voltage AC/DC applications. The GSA 750-R does not specify DC voltage capability and should be limited to AC-only circuits.

Mechanical Fit: Both parts maintain identical package specifications (3AB, 3AG, 1/4" x 1-1/4") with negligible dimensional variance (0.002" length difference), ensuring direct mechanical compatibility in standard fuse holders.

Resistance Characteristics: DC cold resistance values are equivalent (0.642 Ohms vs. 0.641 Ohms), confirming comparable thermal performance.

Frequently Asked Questions (FAQ)

Q: Can the 0326.750HXP replace the GSA 750-R in all applications?

A: The 0326.750HXP is electrically and mechanically compatible for AC circuit protection at 750 mA, 250 V. However, if the application requires specific UL certification (cULus), the GSA 750-R should be retained. For AC-only circuits without DC voltage exposure, both parts are interchangeable.

Q: What is the significance of the DC voltage rating on the 0326.750HXP?

A: The 125 V DC rating on the 0326.750HXP indicates this part can also protect DC circuits up to 125 V at 750 mA. The GSA 750-R does not specify DC capability and should not be used in DC applications.

Q: Are these fuses compatible with standard 3AG fuse holders?

A: Both the GSA 750-R and 0326.750HXP are designed for 3AB and 3AG holders. The 1/4" x 1-1/4" form factor ensures compatibility with standard cartridge fuse holders rated for this package size.

Q: What is the difference in breaking capacity between these parts?

A: The GSA 750-R specifies 35 A breaking capacity at rated voltage. The 0326.750HXP specifies 100 A AC and 10 kA DC breaking capacity. Higher breaking capacity indicates greater ability to safely interrupt fault currents. Application requirements should determine if this difference is significant.

Q: Are both parts RoHS compliant?

A: Both the GSA 750-R and 0326.750HXP are ROHS3 Compliant, meeting environmental and hazardous substance restrictions for electronic components.