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Littelfuse 04651.25DR 1.25 A 465 time-lag SMD Fuse
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pLittelfuse 04651.25DR — 1.25 A, 250 V, time-delay SMD fuse, 100 A @ 250 VAC interrupting./p
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Littelfuse 04651.25DR 1.25 A 465 time-lag SMD Fuse
The 04651.25DR from Littelfuse carries 1.25 A, rated 250 VAC, uses a time-delay element.
Technical Data
| Parameter | Rating |
|---|---|
| Parameter | Value |
| Manufacturer / Series | Littelfuse / 465 Series |
| Part number | 04651.25DR |
| Fuse characteristic | time-lag |
| Rated current | 1.25 A |
| Voltage rating | 250 VAC |
| Interrupting rating | 100 A @ 250 VAC |
| Nominal cold resistance | 0.0830 Ω |
| Nominal melting I²t | 5.6 A²s |
| Package | 12.1 × 4.5 mm NANO2 UMF |
| Operating temperature | -55 °C to +125 °C |
| Agency / environmental | IEC 60127-4 UMF, UL/PSE approvals by rating, RoHS compliant and halogen-free |
Practical Notes
- Interrupting capability is 100 A @ 250 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 250 VAC; a lower-rated part is not a safe substitute.
- Do not upsize beyond 1.25 A to stop nuisance trips — fix the cause instead.
Application Scenarios
Common installation contexts include:
- EV
- lighting
Buying Notes
Order code 04651.25DR from Littelfuse, supplied in 12.1 × 4.5 mm NANO2 UMF. Confirm the exact suffix before release.
Questions and Answers
What are the ratings of the 04651.25DR?
1.25 A continuous at 250 VAC, interrupting rating 100 A @ 250 VAC.
Is the 04651.25DR fast-acting or time-delay?
It is time-delay. It tolerates short inrush surges.
Can the 04651.25DR be used on a higher fault-current circuit?
No — its interrupting rating is 100 A @ 250 VAC. Choose a part whose breaking capacity exceeds the prospective fault current.
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