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Eaton C519-4-R 4 A 125 Vac Time-Delay Glass Fuse
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pEaton C519-4-R — 4 A, 125 V, time-delay glass cartridge fuse, not rated interrupting./p
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Eaton C519-4-R 4 A 125 Vac Time-Delay Glass Fuse
Built by Eaton, the C519-4-R carries 4 A, rated 125 Vac, uses a time-delay element, in a glass body.
Technical Data
| Parameter | Rating |
|---|---|
| Parameter | Value |
| Manufacturer / Series | Eaton / C519 Series |
| Orderable part number | C519-4-R (carton codes BK-C519-4-R / BK1-C519-4-R) |
| Current rating | 4 A |
| Voltage rating | 125 Vac |
| Interrupting rating @ 600 Vac | not rated |
| Interrupting rating @ 250 Vac | not rated |
| Interrupting rating @ 125 Vac | 400 A |
| Typical DC cold resistance | 0.023 Ohm |
| Typical melting I2t | 233.346 A2s |
| Maximum voltage drop | 130 mV |
| Package | 5 x 15 mm glass tube, nickel-plated brass end caps, axial leads |
| Agency / environmental | cULus Listed guide JDYX / JDYX7 file E19180 (125 mA - 3 A); cURus Recognized guide JDYX2 / JDYX8 file E19180 (350 mA, 3.5 A - 7 A). Philippines-manufactured parts carry only these two approvals; RoHS compliant |
Selection Notes
- Interrupting capability is not rated — confirm the circuit's prospective fault current stays below this.
- Time-delay element rides through motor starting and capacitive inrush without nuisance opening.
- Startup surges of several times rated current are tolerated for a short window.
- 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 125 Vac; a lower-rated part is not a safe substitute.
- Do not upsize beyond 4 A to stop nuisance trips — fix the cause instead.
Typical Applications
Engineers usually specify it for these duties:
- lighting
- LED driver
Part Number and Packing
Order code C519-4-R from Eaton, supplied in 5 x 15 mm glass tube, nickel-plated brass end caps, axial leads. Confirm the exact suffix before release.
Q&A
What are the ratings of the C519-4-R?
4 A continuous at 125 Vac, interrupting rating not rated.
Is the C519-4-R fast-acting or time-delay?
It is time-delay. It tolerates short inrush surges.
Can the C519-4-R be used on a higher fault-current circuit?
No — its interrupting rating is not rated. Choose a part whose breaking capacity exceeds the prospective fault current.
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