Littelfuse JLS040
MPNJLS040
Fuse, 40A, 600V, 200kAIC, Class J, Fast-Acting|40 Amp Fuse, High Speed, North American Style, Brand or Series: Class J, Type: Cartridge Lead, Voltage Rating: 600 VAC, Interrupting Rating: 200000 Amp VAC RMS Symmetrical, Dimensions: 1 1/16 Diameter x 2 3/8 Length Inch, Features: Fast Acting
$37.49 – $53.78Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Equivalent series | A4J, JKS, JLS |
| Equivalent brand and series | Bussmann JKS; Littelfuse JLS; Mersen A4J |
| Compatible fuse block series | LFJ |
| AC voltage rating | 600V AC |
| DC voltage rating | Not Rated |
| Body material | Melamine |
| Standards | CE; CSA Certified; QPL-W-F-1814; UL 248-8 Class J; UL Listed |
| Amps | 40 A |
| Brand | LITTELFUSE |
| Class | J |
| Speed | Fast Acting |
| Length | 2-3/8 in |
All specifications
| Parameter | Value |
|---|---|
| Element | Single |
| Diameter | 1-1/16 in |
| Fuse size | 2-3/8 in L x 1-1/16 in dia |
| Body style | Cylindrical |
| Interrupt rating | 200kA at 600V AC |
| Visual indication | Nonindicating |
| Fits fuse block style | Nonrejection |
MPN
JLS040