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Eaton C519-125-R 125 mA 250 Vac Time-Delay Glass Fuse
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pEaton C519-125-R — 125 mA, 250 V, time-delay glass cartridge fuse, not rated interrupting./p
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Eaton C519-125-R 125 mA 250 Vac Time-Delay Glass Fuse
The C519-125-R from Eaton carries 0.125 A, rated 250 Vac, uses a time-delay element, in a glass body.
Technical Data
| Parameter | Rating |
|---|---|
| Parameter | Value |
| Manufacturer / Series | Eaton / C519 Series |
| Orderable part number | C519-125-R (carton codes BK-C519-125-R / BK1-C519-125-R) |
| Current rating | 0.125 A |
| Voltage rating | 250 Vac |
| Interrupting rating @ 600 Vac | not rated |
| Interrupting rating @ 250 Vac | 35 A |
| Interrupting rating @ 125 Vac | 10,000 A |
| Typical DC cold resistance | 4.72 Ohm |
| Typical melting I2t | 0.101 A2s |
| Maximum voltage drop | 770 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 |
Practical 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 250 Vac; a lower-rated part is not a safe substitute.
- Do not upsize beyond 0.125 A to stop nuisance trips — fix the cause instead.
Application Scenarios
Common installation contexts include:
- transformer
Buying Notes
Order code C519-125-R from Eaton, supplied in 5 x 15 mm glass tube, nickel-plated brass end caps, axial leads. Confirm the exact suffix before release.
Questions and Answers
What are the ratings of the C519-125-R?
0.125 A continuous at 250 Vac, interrupting rating not rated.
Is the C519-125-R fast-acting or time-delay?
It is time-delay. It tolerates short inrush surges.
Can the C519-125-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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