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Littelfuse 046406.3DR | 6.3 A 250 VAC SMD Fuse
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pLittelfuse 046406.3DR — 6.3 A, 250 V, SMD fuse, 100 A @ 250 VAC interrupting./p
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Littelfuse 046406.3DR | 6.3 A 250 VAC SMD Fuse
Littelfuse 046406.3DR | 6.3 A 250 VAC SMD Fuse belongs to the Littelfuse range. It carries 6.3 A, rated 250 VAC.
Technical Data
| Parameter | Rating |
|---|---|
| Parameter | Value |
| Manufacturer / Series | Littelfuse / 464 Series |
| Part number | 046406.3DR |
| Fuse characteristic | fast-acting |
| Rated current | 6.3 A |
| Voltage rating | 250 VAC |
| Interrupting rating | 100 A @ 250 VAC |
| Nominal cold resistance | 0.0093 Ω |
| Nominal melting I²t | 35.912 A²s |
| Package | 12.1 × 4.5 mm NANO2 UMF |
| Operating temperature | -55 °C to +125 °C |
| Agency / environmental | IEC 60127-4 UMF, PSE/UL approvals by rating, RoHS compliant and halogen-free |
Design Notes
- Interrupting capability is 100 A @ 250 VAC — confirm the circuit's prospective fault current stays below this.
- Working voltage must stay at or below 250 VAC; a lower-rated part is not a safe substitute.
- Do not upsize beyond 6.3 A to stop nuisance trips — fix the cause instead.
Where It Is Used
Typical places this fuse turns up:
- EV
- lighting
Ordering Details
Order code 046406.3DR from Littelfuse, supplied in 12.1 × 4.5 mm NANO2 UMF. Confirm the exact suffix before release.
Common Questions
What are the ratings of the 046406.3DR?
6.3 A continuous at 250 VAC, interrupting rating 100 A @ 250 VAC.
Can the 046406.3DR 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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