Littelfuse KLLU1800
MPNKLLU1800
KLLU UL CLASS L TIME-DELAY FUSE 1800A|KLLU UL CLASS L TIME-DELAY FUSE 1800A
$1,105.88 – $2,656.74Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Type | Class L |
| Standard | 248-10 UL Listed/CSA |
| Category | Current Limiting Fuses |
| Sub brand | KLLU Series |
| Manufacturer | Littelfuse, Inc. |
| Sub-Category | UL Power Fuse |
| Prop 65 warning | WARNING_CANCER_AND_REPRODUCTIVE_HARM_WWW.P65WARNINGS.CA.GOV |
| Special features | Time-Delay |
| Manufacturer brand | Littelfuse, Inc. |
| Product description | Littelfuse KLLU4000 Time Delay Fuse |
| Full technical description | Class L Type; 10-3/4 Inch; UL 248-10, CSA, CE Approval; 600 Vac/300 VDC Voltage Rating; 5-3/4 Inch Diameter; 200000 Ampere (Symmetrical), 20000 Ampere (DC) Interrupting Rating; 4000 Ampere Current Rating; Blade Terminal Type; Time Delay Characteristics; Powr-Gard [R], Slo-Blo [R] Brand; Application Service Switches, Switchboard Mains and Feeders, Bolted Pressure Contact Switches, Motor Control Center Mains, Large Motor Branch Circuits, Molded Case Circuit Breaker Panelboards and Loadcenter; KLLU Model |
| Proposition 65 warning | WARNING: This product can expose you to chemicals including nickel, which is known to the State of California to cause cancer. |
MPN
KLLU1800