Littelfuse KLSR400
MPNKLSR400
Ul Class Rk1 Fast-acting Fuse|fuses, High Speed, North American Style, Brand Or Series: Class Rk1, Type: Blade, Amp Rating: 400 Amp, Voltage Rating: 600 Vac/300 Vdc, Interrupting Rating: 200000 Amp Vac Rms Symmetrical, Dimensions: 2 19/32 Diameter X 11 5/8 Length Inch,features: Fast
$690.00 – $889.62Ref. price · indicative, final on quote
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026
Specifications
| Parameter | Value |
|---|---|
| Type | Class RK1 |
| Standard | Standard 248-12 UL Listed/CSA |
| Category | Current Limiting Fuses |
| Sub brand | KLSR Series |
| Manufacturer | Littelfuse, Inc. |
| Sub-Category | UL Power Fuse |
| Special features | Fast-Acting |
| Manufacturer brand | Littelfuse, Inc. |
| Product description | Littelfuse KLSR400 600V RK1 Fuse |
| Full technical description | Class RK1 Type; 11-5/8 Inch; UL 248-12, CSA, CE Approval; 600 Vac/300 VDC Voltage Rating; 2-19/32 Inch Diameter; 200000 Ampere (Symmetrical), 20000 Ampere (DC) Interrupting Rating; 400 Ampere Current Rating; Blade Terminal Type; Fast Acting Characteristics; Powr-Gard [R] Brand; Application Resistance Heaters, Lighting Circuits, Non-Inductive Loads, Molded Case Circuit Breaker Load Centers and Panelboards; KLSR 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
KLSR400