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Eaton ABC-30-R - 30 A Fast-Blow Ceramic Fuse 250 Vac
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pEaton ABC-30-R — 30 A, 250 V, fast-acting ceramic cartridge fuse, 200 A at 250 Vac; 1,000 A at 125 Vac; 400 A at 125 Vdc; 1,000 A at 75 Vdc interrupting./p
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Eaton ABC-30-R - 30 A Fast-Blow Ceramic Fuse 250 Vac
Eaton ABC-30-R - 30 A Fast-Blow Ceramic Fuse 250 Vac belongs to the Eaton range. It carries 30 A, rated 125 Vdc, uses a fast-acting element, in a ceramic body.
Technical Data
| Parameter | Rating |
|---|---|
| Part number | ABC-30-R |
| Typical melting I2t | 1,429 A²s |
| Typical DC cold resistance | 0.002225 Ω |
| Element | single element |
| End caps | nickel-plated brass |
| Voltage rating, DC | 125 Vdc |
| Rated current | 30 A |
| Design standard | UL 248-14 |
| AC interrupting rating | 200 A at 250 Vac; 1,000 A at 125 Vac; 400 A at 125 Vdc; 1,000 A at 75 Vdc |
| Typical voltage drop | 0.09 V |
| Body | Ceramic tube, 1/4 x 1-1/4 in (6.4 x 31.7 mm) |
| Voltage rating | 250 Vac |
Design Notes
- Interrupting capability is 200 A at 250 Vac; 1,000 A at 125 Vac; 400 A at 125 Vdc; 1,000 A at 75 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 Vdc; a lower-rated part is not a safe substitute.
- Do not upsize beyond 30 A to stop nuisance trips — fix the cause instead.
Where It Is Used
Typical places this fuse turns up:
- EV
Common Questions
What are the ratings of the ABC-30-R?
30 A continuous at 125 Vdc, interrupting rating 200 A at 250 Vac; 1,000 A at 125 Vac; 400 A at 125 Vdc; 1,000 A at 75 Vdc.
Is the ABC-30-R fast-acting or time-delay?
It is fast-acting. Expect it to open quickly on overload.
Can the ABC-30-R be used on a higher fault-current circuit?
No — its interrupting rating is 200 A at 250 Vac; 1,000 A at 125 Vac; 400 A at 125 Vdc; 1,000 A at 75 Vdc. Choose a part whose breaking capacity exceeds the prospective fault current.
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