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Eaton MDL-9-R Time-Lag Fuse 9 A 32 Vac - 1/4 x 1-1/4 in
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pEaton MDL-9-R — 9 A, 32 V, time-delay fuse, 1,000 A at 32 Vac interrupting./p
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Eaton MDL-9-R Time-Lag Fuse 9 A 32 Vac - 1/4 x 1-1/4 in
The MDL-9-R from Eaton carries 9 A, rated 32 Vac, uses a time-delay element.
Technical Data
| Parameter | Rating |
|---|---|
| Part number | MDL-9-R |
| Design standard | UL 248-14 |
| End caps | nickel-plated brass |
| AC interrupting rating | 1,000 A at 32 Vac |
| Typical voltage drop | 0.124 V |
| Voltage rating | 32 Vac |
| Typical melting I2t | 51.5 A²s |
| Element | single element |
| Typical DC cold resistance | 0.012 Ω |
| Body | Glass tube, 1/4 x 1-1/4 in (6.4 x 31.7 mm) |
| Rated current | 9 A |
| Breaking capacity | 35 A at 250 Vac, 10,000 A at 125 Vac, 1,000 A at 32 Vac |
Practical Notes
- Interrupting capability is 1,000 A at 32 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.
- Working voltage must stay at or below 32 Vac; a lower-rated part is not a safe substitute.
- Do not upsize beyond 9 A to stop nuisance trips — fix the cause instead.
Application Scenarios
Common installation contexts include:
- EV
Questions and Answers
What are the ratings of the MDL-9-R?
9 A continuous at 32 Vac, interrupting rating 1,000 A at 32 Vac.
Is the MDL-9-R fast-acting or time-delay?
It is time-delay. It tolerates short inrush surges.
Can the MDL-9-R be used on a higher fault-current circuit?
No — its interrupting rating is 1,000 A at 32 Vac. Choose a part whose breaking capacity exceeds the prospective fault current.
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