GSAP 15-R Ceramic Fuse - Equivalent & Substitute Parts

Part Overview

The GSAP 15-R is a 15 A, 250 V AC ceramic cartridge fuse manufactured by Bel Fuse Inc., designed for through-hole mounting in 3AB/3AG package format. This component is classified as obsolete, making identification of functionally equivalent substitutes essential for ongoing system maintenance and repair applications. The fuse provides slow-blow response characteristics suitable for circuits requiring transient current tolerance before protective action.

Substiute Parts

GSAP 15-R

Bel Fuse Inc.In Stock: 829GSAP 15-R Datasheet

Current PartRFQ

0325015.MXP

Littelfuse Inc.In Stock: 94730325015.MXP Datasheet

SimilarRFQ

TR/MDA-V-15-R

Eaton - Electronics DivisionIn Stock: 1009TR/MDA-V-15-R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the GSAP 15-R is determined by strict alignment of the following parameters:

• Current Rating: 15 A (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)

Two substitute parts meet these criteria: the Littelfuse 0325015.MXP and the Eaton TR/MDA-V-15-R. Both maintain identical current, voltage, package, and response characteristics, enabling direct functional replacement in applications originally specified for the GSAP 15-R.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts maintain active product status, ensuring continued availability and supply chain reliability. The Littelfuse 0325015.MXP provides additional DC voltage rating capability (60 V DC) and includes UL certification alongside CE, CSA, and PSE approvals. The Eaton TR/MDA-V-15-R matches the original breaking capacity specification (750 A) and maintains CE, CSA, and UL certifications. Selection between these substitutes should be based on specific application requirements regarding DC voltage exposure and required regulatory certifications for the end application.

Frequently Asked Questions (FAQ)

Q: Can the 0325015.MXP be used as a direct replacement for the GSAP 15-R in AC-only circuits?

A: Yes. The 0325015.MXP meets all critical AC parameters: 15 A current rating, 250 V AC voltage rating, 3AB/3AG package, slow-blow response, and through-hole mounting. The additional 60 V DC rating does not affect AC circuit performance.

Q: What is the significance of the different melting I²t values among these fuses?

A: Melting I²t indicates the thermal energy required to melt the fuse element. The GSAP 15-R (2123) and TR/MDA-V-15-R (336.82) have higher values than the 0325015.MXP (245), reflecting different internal element designs. All three maintain the same 15 A current rating and slow-blow response classification.

Q: Are there dimensional differences between these fuses?

A: Dimensional variations exist within tolerance. The GSAP 15-R measures 0.272" Dia x 1.280" L, the 0325015.MXP measures 0.275" Dia x 1.288" L, and the TR/MDA-V-15-R measures 0.266" Dia x 1.292" L. These differences fall within standard 3AB/3AG specifications and do not affect mechanical fit in standard fuse holders.

Q: Which substitute offers the best regulatory coverage?

A: The 0325015.MXP carries the broadest certification set: CE, CSA, K-MARK, PSE, and UL. The TR/MDA-V-15-R carries CE, CSA, and UL certifications. Selection depends on the specific regulatory requirements of your application region and end-use industry.

Q: Is the GSAP 15-R still available for purchase?

A: The GSAP 15-R is classified as obsolete. However, 777 pieces remain in stock as new original inventory. For long-term supply assurance, the active-status substitutes (0325015.MXP or TR/MDA-V-15-R) are recommended.