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Eaton C518-5-R 5 A 250 Vac Fast-Acting Axial Glass Fuse
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pEaton C518-5-R — 5 A, 250 V, fast-acting glass cartridge fuse, 200 A interrupting./p
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Eaton C518-5-R 5 A 250 Vac Fast-Acting Axial Glass Fuse
The C518-5-R from Eaton carries 5 A, rated 250 Vac, uses a fast-acting element, in a glass body.
Technical Data
| Parameter | Rating |
|---|---|
| Parameter | Value |
| Manufacturer / Series | Eaton / C518 Series |
| Orderable part number | C518-5-R (reel code TR2/C518-5-R) |
| Current rating | 5 A |
| Voltage rating | 250 Vac |
| Interrupting rating @ 250 Vac | 200 A |
| Interrupting rating @ 125 Vac | 10,000 A |
| Typical DC cold resistance | 0.018 Ohm |
| Typical melting I2t | 22.4 A2s |
| Typical voltage drop | 91 mV |
| Package | 5 x 15 mm glass tube, nickel-plated brass end caps, axial leads, optional fluoropolymer sleeve |
| Option code | S = insulation sleeve (flexible fluoropolymer, UL VW-1) |
| Agency / environmental | UL Recognition guide JDYX2 file E19180; UL Listed to UL 248-14; CSA certification class 1422-01 file 53787; RoHS compliant |
Practical Notes
- Interrupting capability is 200 A — 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.
- Glass body lets you inspect the element after a fault.
- Best kept for lower fault-current circuits where visual diagnosis matters.
- Working voltage must stay at or below 250 Vac; a lower-rated part is not a safe substitute.
- Do not upsize beyond 5 A to stop nuisance trips — fix the cause instead.
Application Scenarios
Common installation contexts include:
- EV
- lighting
- LED driver
Buying Notes
Order code C518-5-R from Eaton, supplied in 5 x 15 mm glass tube, nickel-plated brass end caps, axial leads, optional fluoropolymer sleeve. Confirm the exact suffix before release.
Questions and Answers
What are the ratings of the C518-5-R?
5 A continuous at 250 Vac, interrupting rating 200 A.
Is the C518-5-R fast-acting or time-delay?
It is fast-acting. Expect it to open quickly on overload.
Can the C518-5-R be used on a higher fault-current circuit?
No — its interrupting rating is 200 A. Choose a part whose breaking capacity exceeds the prospective fault current.
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