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Eaton 1025TD3-R Slow-Blow Ceramic Fuse 3 A 250 Vac
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pEaton 1025TD3-R — 3 A, 250 V, time-delay ceramic cartridge fuse, 50 A AC; 50 A 125 Vdc interrupting./p
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Eaton 1025TD3-R Slow-Blow Ceramic Fuse 3 A 250 Vac
Built by Eaton, the 1025TD3-R carries 3 A, rated 125 Vdc, uses a slow-blow element, in a ceramic body.
Technical Data
| Parameter | Rating |
|---|---|
| Part number | 1025TD3-R |
| Ordering code | TR2/1025TD3-R |
| Packaging | 2,500 pcs on 24 mm tape-and-reel, 13 in (330 mm) reel, EIA-481 |
| Typical melting I2t | 42.74 A²s |
| Typical cold resistance | 0.033 Ω |
| Typical voltage drop | 184 mV |
| Interrupting rating | 50 A AC; 50 A 125 Vdc |
| Terminations | silver-plated end terminations, solder immersion compatible |
| Voltage rating, DC | 125 Vdc |
| Package | 10.29 x 2.77 mm (4010 imperial / 1025 metric) |
| Agency approval | UL Recognition, Guide JDYX2, File E19180 (250 mA - 5 A); CSA component acceptance |
| Voltage rating | 250 Vac |
| Design standard | EIA/IS-722 |
| Rated current | 3 A |
Selection 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 A to stop nuisance trips — fix the cause instead.
Typical Applications
Engineers usually specify it for these duties:
- EV
Part Number and Packing
Order code 1025TD3-R from Eaton, supplied in 10.29 x 2.77 mm (4010 imperial / 1025 metric). Confirm the exact suffix before release.
Q&A
What are the ratings of the 1025TD3-R?
3 A continuous at 125 Vdc, interrupting rating 50 A AC; 50 A 125 Vdc.
Is the 1025TD3-R fast-acting or time-delay?
It is slow-blow. It tolerates short inrush surges.
Can the 1025TD3-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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