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Eaton 6125FA375mA 375 mA 125 Vac Fast-Acting Ceramic Fuse
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pEaton 6125FA375mA — 375 mA, 125 V, fast-acting ceramic cartridge fuse, 50 A at 125 Vac; 300 A at 125 Vdc; 10,000 A at 86 Vdc interrupting./p
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Eaton 6125FA375mA 375 mA 125 Vac Fast-Acting Ceramic Fuse
Built by Eaton, the 6125FA375mA carries 375 mA, rated 125 Vac / 125 Vdc / 86 Vdc, uses a fast-acting element, in a ceramic body.
Technical Data
| Parameter | Rating |
|---|---|
| Part number | 6125FA375mA |
| Ordering code | TR2/6125FA375mA |
| Packaging | 5,000 pcs on 12 mm tape-and-reel, 13 in (330 mm) reel, EIA-481 |
| Typical cold resistance | 0.36 Ω |
| Terminations | nickel/silver plated end terminations, solder immersion compatible |
| Agency approval | CSA component acceptance 053787 C 000, Class 1422-30; UL Recognition Guide JDYX2, File E19180 |
| Interrupting rating | 50 A at 125 Vac; 300 A at 125 Vdc; 10,000 A at 86 Vdc |
| Voltage rating | 125 Vac / 125 Vdc / 86 Vdc |
| Package | 6.3 x 2.5 mm (2410 imperial / 6125 metric) |
| Rated current | 375 mA |
| Design standard | EIA/IS-722 |
| Typical melting I2t | 0.03 A²s |
| Typical voltage drop | 0.25 V |
Selection Notes
- Interrupting capability is 50 A at 125 Vac; 300 A at 125 Vdc; 10,000 A at 86 Vdc — 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.
- Ceramic body holds higher breaking capacity than glass at the same footprint.
- It is the usual choice where prospective fault current is high.
- Working voltage must stay at or below 125 Vac / 125 Vdc / 86 Vdc; a lower-rated part is not a safe substitute.
- Do not upsize beyond 375 mA to stop nuisance trips — fix the cause instead.
Typical Applications
Engineers usually specify it for these duties:
- EV
Part Number and Packing
Order code 6125FA375mA from Eaton, supplied in 6.3 x 2.5 mm (2410 imperial / 6125 metric). Confirm the exact suffix before release.
Q&A
What are the ratings of the 6125FA375mA?
375 mA continuous at 125 Vac / 125 Vdc / 86 Vdc, interrupting rating 50 A at 125 Vac; 300 A at 125 Vdc; 10,000 A at 86 Vdc.
Is the 6125FA375mA fast-acting or time-delay?
It is fast-acting. Expect it to open quickly on overload.
Can the 6125FA375mA be used on a higher fault-current circuit?
No — its interrupting rating is 50 A at 125 Vac; 300 A at 125 Vdc; 10,000 A at 86 Vdc. Choose a part whose breaking capacity exceeds the prospective fault current.
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