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Eaton 1025FA3.5-R 3.5 A Ceramic Fuse 250 Vac, Quick-Blow
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pEaton 1025FA3.5-R — 3.5 A, 250 V, fast-acting ceramic cartridge fuse, 50 A AC; 50 A 125 Vdc interrupting./p
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Eaton 1025FA3.5-R 3.5 A Ceramic Fuse 250 Vac, Quick-Blow
The 1025FA3.5-R from Eaton carries 3.5 A, rated 125 Vdc, in a ceramic body.
Technical Data
| Parameter | Rating |
|---|---|
| Part number | 1025FA3.5-R |
| Ordering code | TR2/1025FA3.5-R |
| Packaging | 2,500 pcs on 24 mm tape-and-reel, 13 in (330 mm) reel, EIA-481 |
| Agency approval | UL Recognition, Guide JDYX2, File E19180 (250 mA - 15 A); CSA component acceptance |
| Typical voltage drop | 185 mV |
| Rated current | 3.5 A |
| Voltage rating, DC | 125 Vdc |
| Voltage rating | 250 Vac |
| Design standard | EIA/IS-722 |
| Typical melting I2t | 17.83 A²s |
| Package | 10.29 x 2.77 mm (4010 imperial / 1025 metric) |
| Typical cold resistance | 0.0305 Ω |
| Terminations | silver-plated end terminations, solder immersion compatible |
| Interrupting rating | 50 A AC; 50 A 125 Vdc |
Practical Notes
- Interrupting capability is 50 A AC; 50 A 125 Vdc — confirm the circuit's prospective fault current stays below this.
- 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 Vdc; a lower-rated part is not a safe substitute.
- Do not upsize beyond 3.5 A to stop nuisance trips — fix the cause instead.
Application Scenarios
Common installation contexts include:
- EV
Buying Notes
Order code 1025FA3.5-R from Eaton, supplied in 10.29 x 2.77 mm (4010 imperial / 1025 metric). Confirm the exact suffix before release.
Questions and Answers
What are the ratings of the 1025FA3.5-R?
3.5 A continuous at 125 Vdc, interrupting rating 50 A AC; 50 A 125 Vdc.
Can the 1025FA3.5-R be used on a higher fault-current circuit?
No — its interrupting rating is 50 A AC; 50 A 125 Vdc. Choose a part whose breaking capacity exceeds the prospective fault current.
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