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Eaton AHC-400-R 400 mA 600 Vac High Voltage Fast-Acting Ceramic Tube Fuse
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pEaton AHC-400-R — 400 mA, 600 V, fast-acting ceramic cartridge fuse, 10,000 A @ 600 Vac interrupting./p
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Eaton AHC-400-R 400 mA 600 Vac High Voltage Fast-Acting Ceramic Tube Fuse
Eaton AHC-400-R 400 mA 600 Vac High Voltage Fast-Acting Ceramic Tube Fuse belongs to the Eaton range. It carries 0.4 A, rated 600 Vac / 600 Vdc, uses a fast-acting element, in a ceramic body.
Technical Data
| Parameter | Rating |
|---|---|
| Parameter | Value |
| Manufacturer / Series | Eaton / AHC Series |
| Part number | AHC-400-R |
| Current rating | 0.4 A |
| Voltage rating | 600 Vac / 600 Vdc |
| Interrupting rating (AC) | 10,000 A @ 600 Vac |
| Interrupting rating (DC) | 10,000 A @ 600 Vdc |
| Typical resistance | 1436 mΩ |
| Typical voltage drop | 730 mV @ rated current |
| Package | 1/4 x 1-1/4 in (6.3 x 32 mm) ceramic tube, cartridge or axial lead |
| Agency / environmental | cURus recognition file E19180, guide JDYX2 and JDYX8; RoHS compliant and halogen free |
Design Notes
- Interrupting capability is 10,000 A @ 600 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.
- 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 600 Vac / 600 Vdc; a lower-rated part is not a safe substitute.
- Do not upsize beyond 0.4 A to stop nuisance trips — fix the cause instead.
Where It Is Used
Typical places this fuse turns up:
- EV
- transformer
Ordering Details
Order code AHC-400-R from Eaton, supplied in 1/4 x 1-1/4 in (6.3 x 32 mm) ceramic tube, cartridge or axial lead. Confirm the exact suffix before release.
Common Questions
What are the ratings of the AHC-400-R?
0.4 A continuous at 600 Vac / 600 Vdc, interrupting rating 10,000 A @ 600 Vac.
Is the AHC-400-R fast-acting or time-delay?
It is fast-acting. Expect it to open quickly on overload.
Can the AHC-400-R be used on a higher fault-current circuit?
No — its interrupting rating is 10,000 A @ 600 Vac. Choose a part whose breaking capacity exceeds the prospective fault current.
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