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Littelfuse 0218004 218 Series 4.0 A 5×20mm Glass Tube Through-Hole Fuse
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pLittelfuse 0218004 — 4 A, 250 V, glass cartridge fuse, 40A@250VAC interrupting./p
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Littelfuse 0218004 218 Series 4.0 A 5×20mm Glass Tube Through-Hole Fuse
The 0218004 from Littelfuse carries 4.0 A, rated 250 VAC, in a glass body.
Technical Data
| Parameter | Rating |
|---|---|
| Parameter | Value |
| Manufacturer / Series | Littelfuse / 218 Series |
| Part number | 0218004 |
| Fuse characteristic | time-delay (T) |
| Rated current | 4.0 A |
| Voltage rating | 250 VAC |
| Interrupting rating | 40A@250VAC |
| Nominal cold resistance | 0.0129 Ω |
| Nominal melting I²t | 69.1 A²·s |
| Package / mounting | 5 × 20 mm glass tube (IEC 60127-2 Sheet 3) |
| Operating temperature | 2 °C |
| Agency / environmental | UL 248-14 / IEC 60127-2 compliant, RoHS compliant and lead-free |
Practical Notes
- Interrupting capability is 40A@250VAC — confirm the circuit's prospective fault current stays below this.
- 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 4.0 A to stop nuisance trips — fix the cause instead.
Application Scenarios
Common installation contexts include:
- power supply
- SMPS
- adapter
- industrial control
- appliance
- transformer
Buying Notes
Order code 0218004 from Littelfuse, supplied in 5 × 20 mm glass tube (IEC 60127-2 Sheet 3). Confirm the exact suffix before release.
Questions and Answers
What are the ratings of the 0218004?
4.0 A continuous at 250 VAC, interrupting rating 40A@250VAC.
Can the 0218004 be used on a higher fault-current circuit?
No — its interrupting rating is 40A@250VAC. Choose a part whose breaking capacity exceeds the prospective fault current.
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