GMA-15A Equivalent & Substitute Parts Reference

Part Overview

The GMA-15A is a 15 A 125 V AC/DC glass fuse cartridge manufactured by Eaton - Electronics Division. This component requires a dedicated fuse holder for installation and operates as a fast-blow protective device in electrical circuits. The GMA-15A maintains active product status with 888 pieces in current inventory. Substitute parts are identified to support procurement flexibility, supply chain continuity, and component availability across equivalent electrical and mechanical specifications.

Substiute Parts

GMA-15A

Eaton - Electronics DivisionIn Stock: 963GMA-15A Datasheet

Current PartRFQ

GMA-15-R

Eaton - Electronics DivisionIn Stock: 992GMA-15-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the GMA-15A are qualified based on strict electrical and mechanical parameter alignment. The substitution criteria are:

Electrical Parameters:

• Current Rating: 15 A (exact match required)
• Voltage Rating - AC: 125 V (exact match required)
• Response Time: Fast Blow (exact match required)

Mechanical Parameters:

• Package / Case: 5mm x 20mm (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Mounting Type: Requires Holder (exact match required)

Manufacturer & Series:

• Manufacturer: Eaton - Electronics Division
• Series: GMA

All substitute parts listed maintain identical electrical performance characteristics and physical dimensions, ensuring direct compatibility within existing circuit designs and fuse holder assemblies.

Parameter Comparison

Engineering Selection Recommendations

Both GMA-15A and GMA-15-R are active products from Eaton - Electronics Division with confirmed inventory availability. Selection between these parts is based on the following engineering criteria:

GMA-15-R Selection Factors:

• Holds multiple international approvals: CSA, PSE, and UL certifications
• RoHS Compliant status for environmental and regulatory compliance
• Specified breaking capacity of 150A at rated voltage
• Documented melting I²t value of 950 for thermal analysis
• Measured DC cold resistance of 0.004 Ohms for circuit calculations
• Higher current inventory (981 pieces) supports extended lead time requirements

GMA-15A Selection Factors:

• Established product with active status and confirmed availability (888 pieces)
• Identical electrical and mechanical specifications for direct substitution
• Suitable for applications where certification documentation is not a requirement

Both parts are electrically and mechanically interchangeable within 5mm x 20mm fuse holder assemblies rated for 15 A at 125 V AC/DC operation.

Frequently Asked Questions (FAQ)

Q: Can GMA-15-R replace GMA-15A in existing circuits?

A: Yes. Both parts share identical current rating (15 A), voltage rating (125 V AC), response time (Fast Blow), fuse type (Cartridge, Glass), and physical dimensions (5mm x 20mm). Direct substitution is supported without circuit modification.

Q: What is the difference between GMA-15A and GMA-15-R?

A: The primary differences are documentation and certifications. GMA-15-R includes specified breaking capacity (150A), melting I²t (950), DC cold resistance (0.004 Ohms), and holds CSA, PSE, and UL approvals with RoHS Compliance. GMA-15A specifications are not fully documented in this reference. Both are functionally equivalent for 15 A 125 V AC/DC protection.

Q: Are these fuses compatible with standard 5x20mm fuse holders?

A: Yes. Both GMA-15A and GMA-15-R are cartridge fuses with 5mm x 20mm dimensions and require a dedicated fuse holder for installation. They are compatible with all standard 5x20mm fuse holder assemblies.

Q: Which part should I select for new designs?

A: Selection depends on regulatory and compliance requirements. GMA-15-R is recommended for applications requiring international certifications (CSA, PSE, UL) or RoHS compliance. GMA-15A is suitable for applications without specific certification mandates.

Q: What is the response time classification for these fuses?

A: Both GMA-15A and GMA-15-R are classified as Fast Blow fuses, providing rapid circuit protection in response to overcurrent conditions.

Q: Are these parts available in other current ratings?

A: This reference covers only the 15 A rating. The GMA series from Eaton - Electronics Division includes multiple current ratings; consult the full product catalog for alternative amperage options.