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Eaton GMA-5-R 5 A Fast-Acting Fuse - 5 x 20 mm, 125 Vac
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pEaton GMA-5-R — 5 A, 125 V, fast-acting fuse, 5 x 20 mm, 10,000 A at 125 Vac interrupting./p
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Eaton GMA-5-R 5 A Fast-Acting Fuse - 5 x 20 mm, 125 Vac
Eaton GMA-5-R 5 A Fast-Acting Fuse - 5 x 20 mm, 125 Vac belongs to the Eaton range. It carries 5 A, rated 125 Vac, uses a fast-acting element, measuring 5 x 20 mm.
Technical Data
| Parameter | Rating |
|---|---|
| Part number | GMA-5-R |
| Typical melting I2t | 29 A²s |
| Breaking capacity | 35 A at 250 Vac up to 3 A, 10,000 A at 125 Vac, 150-200 A above 6 A |
| Design standard | UL/CSA 248-14 |
| End caps | silver-plated brass 63-315 mA, nickel-plated 500 mA-15 A |
| Body | Glass tube, 5 x 20 mm |
| AC interrupting rating | 10,000 A at 125 Vac |
| Maximum voltage drop | 200 mV |
| Element | single element |
| Typical DC cold resistance | 0.021 Ω |
| Rated current | 5 A |
| Voltage rating | 125 Vac |
Design Notes
- Interrupting capability is 10,000 A at 125 Vac — confirm the circuit's prospective fault current stays below this.
- Fast element suits resistive and semiconductor loads rather than motors with high inrush.
- Because it opens within milliseconds, downstream semiconductors see less let-through energy.
- Footprint 5 x 20 mm — check clip or holder compatibility before substitution.
- Working voltage must stay at or below 125 Vac; a lower-rated part is not a safe substitute.
- Do not upsize beyond 5 A to stop nuisance trips — fix the cause instead.
Where It Is Used
Typical places this fuse turns up:
- EV
- surge
Common Questions
What are the ratings of the GMA-5-R?
5 A continuous at 125 Vac, interrupting rating 10,000 A at 125 Vac.
Is the GMA-5-R fast-acting or time-delay?
It is fast-acting. Expect it to open quickly on overload.
What size is the GMA-5-R?
It measures 5 x 20 mm. Match the holder or clip to this footprint.
Can the GMA-5-R be used on a higher fault-current circuit?
No — its interrupting rating is 10,000 A at 125 Vac. Choose a part whose breaking capacity exceeds the prospective fault current.
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