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Eaton MDL-1/8-R 125 mA Glass Tube Fuse, Time-Lag, 250 Vac
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pEaton MDL-1/8-R — 125 mA, 250 V, time-delay glass cartridge fuse, 35 A at 250 Vac; 10,000 A at 125 Vac interrupting./p
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Eaton MDL-1/8-R 125 mA Glass Tube Fuse, Time-Lag, 250 Vac
Built by Eaton, the MDL-1/8-R carries 125 mA, rated 250 Vac, uses a time-delay element, in a glass body.
Technical Data
| Parameter | Rating |
|---|---|
| Part number | MDL-1/8-R |
| End caps | nickel-plated brass |
| Typical DC cold resistance | 12.238 Ω |
| Typical melting I2t | 0.0422 A²s |
| Rated current | 125 mA (1/8 A) |
| AC interrupting rating | 35 A at 250 Vac; 10,000 A at 125 Vac |
| Element | single element |
| Body | Glass tube, 1/4 x 1-1/4 in (6.4 x 31.7 mm) |
| Design standard | UL 248-14 |
| Voltage rating | 250 Vac |
| Typical voltage drop | 1.52 V |
Selection Notes
- Interrupting capability is 35 A at 250 Vac; 10,000 A at 125 Vac — 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 125 mA to stop nuisance trips — fix the cause instead.
Typical Applications
Engineers usually specify it for these duties:
- EV
Q&A
What are the ratings of the MDL-1/8-R?
125 mA continuous at 250 Vac, interrupting rating 35 A at 250 Vac; 10,000 A at 125 Vac.
Is the MDL-1/8-R fast-acting or time-delay?
It is time-delay. It tolerates short inrush surges.
Can the MDL-1/8-R be used on a higher fault-current circuit?
No — its interrupting rating is 35 A at 250 Vac; 10,000 A at 125 Vac. Choose a part whose breaking capacity exceeds the prospective fault current.
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