GSAP 375-R Equivalent & Substitute Parts

Part Overview

The GSAP 375-R is a 375 mA ceramic cartridge fuse rated for 250 V AC operation, manufactured by Bel Fuse Inc. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and component procurement. The fuse is designed for through-hole mounting in 3AB, 3AG form factor applications requiring slow-blow response characteristics.

Substiute Parts

GSAP 375-R

Bel Fuse Inc.In Stock: 1123GSAP 375-R Datasheet

Current PartRFQ

0325.375MXP

Littelfuse Inc.In Stock: 10010325.375MXP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the GSAP 375-R is based on strict equivalence across the following critical parameters:

• Current Rating: 375 mA (exact match required)
• Voltage Rating - AC: 250 V (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial) (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Response Time: Slow Blow (exact match required)
• Mounting Type: Through Hole (exact match required)

The substitute part 0325.375MXP from Littelfuse Inc. meets all critical electrical and mechanical parameters. Additional DC voltage rating and enhanced breaking capacity in the substitute represent functional improvements that do not compromise compatibility in AC-primary applications.

Parameter Comparison

Engineering Selection Recommendations

The 0325.375MXP from Littelfuse Inc. is the direct functional equivalent for GSAP 375-R replacement. Both components share identical current rating, AC voltage rating, package form factor, and response characteristics. The substitute maintains active product status, ensuring long-term availability and supply chain continuity.

Dimensional tolerances between the two parts are within acceptable mechanical limits for standard through-hole mounting applications. The substitute's enhanced breaking capacity and DC voltage rating provide additional operational margin without introducing incompatibility.

Both components carry equivalent regulatory compliance (CE, CSA certifications) and RoHS3 compliance status. The substitute carries UL certification in place of cULus, representing equivalent North American approval authority recognition.

Frequently Asked Questions (FAQ)

Q: Can the 0325.375MXP be used as a direct replacement for GSAP 375-R in existing circuit designs?

A: Yes. Both components share identical current rating (375 mA), AC voltage rating (250 V), package form factor (3AB, 3AG, 1/4" x 1-1/4"), and response time (slow blow). Physical dimensions are within acceptable tolerance for standard through-hole mounting.

Q: What is the significance of the DC voltage rating difference?

A: The GSAP 375-R does not specify a DC voltage rating, while the 0325.375MXP is rated for 125 V DC. In AC-primary applications, this difference is not a limiting factor. For circuits requiring DC operation, the substitute provides additional capability.

Q: Are there compliance or certification differences between these parts?

A: Both components are CE and CSA certified. The GSAP 375-R carries cULus certification, while the 0325.375MXP carries UL certification. Both represent equivalent North American regulatory recognition and do not affect interchangeability.

Q: How do the melting I²t values affect substitution?

A: The GSAP 375-R has a melting I²t of 2.6, while the 0325.375MXP has 1.2. This indicates the substitute will respond faster to overcurrent conditions. For slow-blow fuse applications with identical current ratings and voltage specifications, this represents an acceptable operational characteristic.

Q: What is the impact of the higher breaking capacity in the substitute?

A: The 0325.375MXP has a breaking capacity of 100 A AC and 10 kA DC, compared to 35 A for the GSAP 375-R. Higher breaking capacity indicates improved performance under fault conditions and does not compromise compatibility in standard applications.

Q: Are there packaging or inventory considerations?

A: The GSAP 375-R is obsolete with 1,074 pieces in stock. The 0325.375MXP is active with 975 pieces available. For new designs or long-term procurement, the active status of the substitute ensures continued availability.