GMA-3ABC Equivalent & Substitute Parts

Part Overview

The GMA-3ABC is a glass fuse rated at 250V, 3A with a 5x20mm form factor, designed for AC/DC applications. This part is classified as obsolete, necessitating identification of active equivalent components to maintain system functionality and ensure continued availability for replacement and new designs.

Substiute Parts

GMA-3ABC

Eaton - Bussmann Electrical DivisionIn Stock: 752GMA-3ABC Datasheet

Current PartRFQ

GMA-3-R

Eaton - Electronics DivisionIn Stock: 4083GMA-3-R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the GMA-3ABC is determined by the following critical parameters:

• Current Rating: 3 A
• Voltage Rating: 250 V AC
• Package Dimensions: 5mm x 20mm
• Fuse Type: Glass Cartridge
• Response Characteristic: Fast Blow
• RoHS Compliance: Required

The GMA-3-R qualifies as a direct substitute based on matching all electrical ratings (3A, 250V AC), identical physical dimensions (5x20mm), and equivalent performance characteristics. Both components are glass cartridge fuses with fast-blow response and RoHS compliance, ensuring functional and regulatory equivalence.

Parameter Comparison

Engineering Selection Recommendations

The GMA-3-R is the qualified substitute for the GMA-3ABC. Selection is based on:

• Electrical equivalence: Identical current (3A) and voltage (250V AC) ratings
• Physical compatibility: Matching 5x20mm form factor ensures mechanical fit in existing holders
• Performance parity: Both components exhibit fast-blow response characteristics
• Regulatory compliance: Both parts maintain RoHS compliance status
• Availability: GMA-3-R is active production status, ensuring supply continuity

The transition from GMA-3ABC to GMA-3-R presents no functional or compatibility constraints for AC/DC fuse applications within the specified electrical parameters.

Frequently Asked Questions (FAQ)

Q: Can GMA-3-R be used as a direct replacement for GMA-3ABC?

A: Yes. Both components share identical electrical ratings (3A, 250V AC), physical dimensions (5x20mm), and response characteristics (fast-blow). The GMA-3-R is manufactured by Eaton and maintains RoHS compliance, making it functionally equivalent for all applications where GMA-3ABC was specified.

Q: What is the physical compatibility between these fuses?

A: Both fuses conform to the 5mm x 20mm (0.205" diameter x 0.787" length) standard form factor. They are mechanically interchangeable in any holder designed for 5x20mm glass cartridge fuses.

Q: Are there any electrical performance differences?

A: Both fuses are rated for 3A at 250V AC with fast-blow response. The GMA-3-R provides additional documented specifications including 100A breaking capacity at rated voltage, 8.8 melting I²t, and 0.039 Ohms DC cold resistance. These parameters confirm performance equivalence.

Q: Does the manufacturer change affect application suitability?

A: No. Both components are manufactured by Eaton divisions and meet identical electrical and safety standards. The division designation reflects internal organizational structure and does not impact functional performance or regulatory compliance.

Q: What certifications apply to the substitute?

A: The GMA-3-R carries CSA, PSE, and UL approvals, with RoHS compliance and MSL 1 rating. These certifications ensure suitability for the same applications as the original GMA-3ABC component.