Littelfuse Fuses

Littlefuse Class L fuses include KLPC series fuses for AC circuits from 601 to 6000 amperes, as well as LDC series fuses for AC and DC circuits available from 601 to 2000 amperes. When facilities have a combination of large AC and DC circuits, standardizing to LDC series for all Class L fuses should be considered. This eliminates the possibility that an AC-only fuse will be used in a DC circuit and reduces inventory.

Littlefuse Class RK5 fuses provide protection for electrical systems that are 600 amps and smaller, and have available short-circuit currents less than 100,000 amperes. The FLSR_ID indicator series fuses provide superior time-delay protection, plus they have the patented indicating window that immediately shows which fuses are blown.

Littlefuse Class RK1 fuses provide time-delay protection where fault currents exceed 100,000 amperes. The LLSRK series reduces short-circuit damage to full-size NEMA and sensitive IEC motor controllers and is capable of providing Type 2 “no damage” protection to NEMA size motor starters. The LLSRK_ID series provides the patented indicating window design.

Littlefuse Class J fuses provide the amount of time-delay necessary for most applications and are substantially smaller than RK5 or RK1 fuses with current-limitation equal to the RK1 fuse. The JTD_ID series fuses provide IEC Type 2 protection to both IEC and NEMA control components and motor controllers.

Littlefuse Class CC fuses are installed in LEC or LEB weatherproof fuse holders in the base of lighting standards and withstand corrosive and wet conditions. Fusing each lighting fixture eliminates the need to test the entire circuit when only one fails.

Littlefuse Class K5 fuses are “one-time” fuses that provide low cost protection for general-purpose feeder and branch circuits when available short-circuit currents are less than 50,000 amperes. They are suitable for use in many residential and smaller commercial and industrial applications.

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$71.00
Littelfuse Fuse FLA.500, 1/2 Amps , 125 Volts, UL Midget Class, Time Delay, Slo-Blo® Type Indicating Fuse, Physical Size: 0.401" x 1 1/2", Indicating Pin: extends 0.3" when fuse opens,, AC Voltage Rating: 125,, Interrupting Rating: 10,000 AIC @ 125VAC,, UL Listed,,
$87.40
Littelfuse Fuse SPF030, 30 Amps, 1000 Volts DC, Solar Rated,, Photovoltaic (PV) System Protection, Physical Size: 41/100" x 1 1/2", Inverter Protection, Battery Controller Protection,, DC Voltage Rating: 1000,, DC Interrupting Rating: 20,000 AIC, UL Listed, CSA Certified,
$87.40
Littelfuse Fuse SPF025, 25 Amps, 1000 Volts DC, Solar Rated,, Photovoltaic (PV) System Protection, Physical Size: 41/100" x 1 1/2", Inverter Protection, Battery Controller Protection,, DC Voltage Rating: 1000,, DC Interrupting Rating: 20,000 AIC, UL Listed, CSA Certified,
$87.40
Littelfuse Fuse SPF020, 20 Amps, 1000 Volts DC, Solar Rated,, Photovoltaic (PV) System Protection, Physical Size: 41/100" x 1 1/2", Inverter Protection, Battery Controller Protection,, DC Voltage Rating: 1000,, DC Interrupting Rating: 20,000 AIC, UL Listed, CSA Certified,
$87.40
Littelfuse Fuse SPF015, 15 Amps, 1000 Volts DC, Solar Rated,, Photovoltaic (PV) System Protection, Physical Size: 41/100" x 1 1/2", Inverter Protection, Battery Controller Protection,, DC Voltage Rating: 1000,, DC Interrupting Rating: 20,000 AIC, UL Listed, CSA Certified,
$87.40
Littelfuse Fuse SPF012, 12 Amps, 1000 Volts DC, Solar Rated,, Photovoltaic (PV) System Protection, Physical Size: 41/100" x 1 1/2", Inverter Protection, Battery Controller Protection,, DC Voltage Rating: 1000,, DC Interrupting Rating: 20,000 AIC, UL Listed, CSA Certified,
$87.40
Littelfuse Fuse SPF010, 10 Amps, 1000 Volts DC, Solar Rated,, Photovoltaic (PV) System Protection, Physical Size: 41/100" x 1 1/2", Inverter Protection, Battery Controller Protection,, DC Voltage Rating: 1000,, DC Interrupting Rating: 20,000 AIC, UL Listed, CSA Certified,
$87.40
Littelfuse Fuse SPF008, 8 Amps, 1000 Volts DC, Solar Rated,, Photovoltaic (PV) System Protection, Physical Size: 41/100" x 1 1/2", Inverter Protection, Battery Controller Protection,, DC Voltage Rating: 1000,, DC Interrupting Rating: 20,000 AIC, UL Listed, CSA Certified,
$87.40
Littelfuse Fuse SPF006, 6 Amps, 1000 Volts DC, Solar Rated,, Photovoltaic (PV) System Protection, Physical Size: 41/100" x 1 1/2", Inverter Protection, Battery Controller Protection,, DC Voltage Rating: 1000,, DC Interrupting Rating: 20,000 AIC, UL Listed, CSA Certified,
$87.40
Littelfuse Fuse SPF005, 5 Amps, 1000 Volts DC, Solar Rated,, Photovoltaic (PV) System Protection, Physical Size: 41/100" x 1 1/2", Inverter Protection, Battery Controller Protection,, DC Voltage Rating: 1000,, DC Interrupting Rating: 20,000 AIC, UL Listed, CSA Certified,
$87.40
Littelfuse Fuse SPF004, 4 Amps, 1000 Volts DC, Solar Rated,, Photovoltaic (PV) System Protection, Physical Size: 41/100" x 1 1/2", Inverter Protection, Battery Controller Protection,, DC Voltage Rating: 1000,, DC Interrupting Rating: 20,000 AIC, UL Listed, CSA Certified,
$87.40
Littelfuse Fuse SPF003, 3 Amps, 1000 Volts DC, Solar Rated,, Photovoltaic (PV) System Protection, Physical Size: 41/100" x 1 1/2", Inverter Protection, Battery Controller Protection,, DC Voltage Rating: 1000,, DC Interrupting Rating: 20,000 AIC, UL Listed, CSA Certified,
$87.40
Littelfuse Fuse SPF002, 2 Amps, 1000 Volts DC, Solar Rated,, Photovoltaic (PV) System Protection, Physical Size: 41/100" x 1 1/2", Inverter Protection, Battery Controller Protection,, DC Voltage Rating: 1000,, DC Interrupting Rating: 20,000 AIC, UL Listed, CSA Certified,
$87.40
Littelfuse Fuse SPF001, 1 Amps, 1000 Volts DC, Solar Rated,, Photovoltaic (PV) System Protection, Physical Size: 41/100" x 1 1/2", Inverter Protection, Battery Controller Protection,, DC Voltage Rating: 1000,, DC Interrupting Rating: 20,000 AIC, UL Listed, CSA Certified,
$60.30
Littelfuse Fuse SLC060, 60 Amps, 480 Volts, UL Class G, Time Delay, Current Limiting, Physical Size: 13/32" x 2 1/4", Branch Circuit Protection, Cost Effective, AC Voltage Rating: 480, DC Voltage Rating: 170, Interrupting Rating: 100,000 AIC @ 600VAC, DC Interrupting Rating: 10,000 AIC, UL Listed, CSA Certified,
$67.15
Littelfuse Fuse SLC050, 50 Amps, 480 Volts, UL Class G, Time Delay, Current Limiting, Physical Size: 13/32" x 2 1/4", Branch Circuit Protection, Cost Effective, AC Voltage Rating: 480, DC Voltage Rating: 170, Interrupting Rating: 100,000 AIC @ 600VAC, DC Interrupting Rating: 10,000 AIC, UL Listed, CSA Certified,
$67.15
Littelfuse Fuse SLC045, 45 Amps, 480 Volts, UL Class G, Time Delay, Current Limiting, Physical Size: 13/32" x 2 1/4", Branch Circuit Protection, Cost Effective, AC Voltage Rating: 480, DC Voltage Rating: 170, Interrupting Rating: 100,000 AIC @ 600VAC, DC Interrupting Rating: 10,000 AIC, UL Listed, CSA Certified,
$60.05
Littelfuse Fuse SLC040, 40 Amps, 480 Volts, UL Class G, Time Delay, Current Limiting, Physical Size: 13/32" x 2 1/4", Branch Circuit Protection, Cost Effective, AC Voltage Rating: 480, DC Voltage Rating: 170, Interrupting Rating: 100,000 AIC @ 600VAC, DC Interrupting Rating: 10,000 AIC, UL Listed, CSA Certified,
$64.30
Littelfuse Fuse SLC035, 35 Amps, 480 Volts, UL Class G, Time Delay, Current Limiting, Physical Size: 13/32" x 2 1/4", Branch Circuit Protection, Cost Effective, AC Voltage Rating: 480, DC Voltage Rating: 170, Interrupting Rating: 100,000 AIC @ 600VAC, DC Interrupting Rating: 10,000 AIC, UL Listed, CSA Certified,
$51.90
Littelfuse Fuse SLC030, 30 Amps, 480 Volts, UL Class G, Time Delay, Current Limiting, Physical Size: 13/32" x 1 5/8", Branch Circuit Protection, Cost Effective, AC Voltage Rating: 480, DC Voltage Rating: 170, Interrupting Rating: 100,000 AIC @ 600VAC, DC Interrupting Rating: 10,000 AIC, UL Listed, CSA Certified,
$61.05
Littelfuse Fuse SLC025, 25 Amps, 480 Volts, UL Class G, Time Delay, Current Limiting, Physical Size: 13/32" x 1 5/8", Branch Circuit Protection, Cost Effective, AC Voltage Rating: 480, DC Voltage Rating: 170, Interrupting Rating: 100,000 AIC @ 600VAC, DC Interrupting Rating: 10,000 AIC, UL Listed, CSA Certified,
$29.60
Littelfuse Fuse SLC020, 20 Amps, 600 Volts, UL Class G, Time Delay, Current Limiting, Physical Size: 13/32" x 1 13/32", Branch Circuit Protection, Cost Effective, AC Voltage Rating: 600, DC Voltage Rating: 170, Interrupting Rating: 100,000 AIC @ 600VAC, DC Interrupting Rating: 10,000 AIC, UL Listed, CSA Certified,
$28.15
Littelfuse Fuse SLC015, 15 Amps, 600 Volts, UL Class G, Time Delay, Current Limiting, Physical Size: 13/32" x 1 5/16", Branch Circuit Protection, Cost Effective, AC Voltage Rating: 600, DC Voltage Rating: 170, Interrupting Rating: 100,000 AIC @ 600VAC, DC Interrupting Rating: 10,000 AIC, UL Listed, CSA Certified,
$28.15
Littelfuse Fuse SLC012, 12 Amps, 600 Volts, UL Class G, Time Delay, Current Limiting, Physical Size: 13/32" x 1 5/16", Branch Circuit Protection, Cost Effective, AC Voltage Rating: 600, DC Voltage Rating: 170, Interrupting Rating: 100,000 AIC @ 600VAC, DC Interrupting Rating: 10,000 AIC, UL Listed, CSA Certified,
$38.15
Littelfuse Fuse SLC010, 10 Amps, 600 Volts, UL Class G, Time Delay, Current Limiting, Physical Size: 13/32" x 1 5/16", Branch Circuit Protection, Cost Effective, AC Voltage Rating: 600, DC Voltage Rating: 170, Interrupting Rating: 100,000 AIC @ 600VAC, DC Interrupting Rating: 10,000 AIC, UL Listed, CSA Certified,
$44.75
Littelfuse Fuse SLC008, 8 Amps, 600 Volts, UL Class G, Time Delay, Current Limiting, Physical Size: 13/32" x 1 5/16", Branch Circuit Protection, Cost Effective, AC Voltage Rating: 600, DC Voltage Rating: 170, Interrupting Rating: 100,000 AIC @ 600VAC, DC Interrupting Rating: 10,000 AIC, UL Listed, CSA Certified,
$38.15
Littelfuse Fuse SLC006, 6 Amps, 600 Volts, UL Class G, Time Delay, Current Limiting, Physical Size: 13/32" x 1 5/16", Branch Circuit Protection, Cost Effective, AC Voltage Rating: 600, DC Voltage Rating: 170, Interrupting Rating: 100,000 AIC @ 600VAC, DC Interrupting Rating: 10,000 AIC, UL Listed, CSA Certified,
$38.15
Littelfuse Fuse SLC005, 5 Amps, 600 Volts, UL Class G, Time Delay, Current Limiting, Physical Size: 13/32" x 1 5/16", Branch Circuit Protection, Cost Effective, AC Voltage Rating: 600, DC Voltage Rating: 170, Interrupting Rating: 100,000 AIC @ 600VAC, DC Interrupting Rating: 10,000 AIC, UL Listed, CSA Certified,
$40.80
Littelfuse Fuse SLC004, 4 Amps, 600 Volts, UL Class G, Time Delay, Current Limiting, Physical Size: 13/32" x 1 5/16", Branch Circuit Protection, Cost Effective, AC Voltage Rating: 600, DC Voltage Rating: 170, Interrupting Rating: 100,000 AIC @ 600VAC, DC Interrupting Rating: 10,000 AIC, UL Listed, CSA Certified,
$40.80
Littelfuse Fuse SLC003, 3 Amps, 600 Volts, UL Class G, Time Delay, Current Limiting, Physical Size: 13/32" x 1 5/16", Branch Circuit Protection, Cost Effective, AC Voltage Rating: 600, DC Voltage Rating: 170, Interrupting Rating: 100,000 AIC @ 600VAC, DC Interrupting Rating: 10,000 AIC, UL Listed, CSA Certified,
$40.80
Littelfuse Fuse SLC002, 2 Amps, 600 Volts, UL Class G, Time Delay, Current Limiting, Physical Size: 13/32" x 1 5/16", Branch Circuit Protection, Cost Effective, AC Voltage Rating: 600, DC Voltage Rating: 170, Interrupting Rating: 100,000 AIC @ 600VAC, DC Interrupting Rating: 10,000 AIC, UL Listed, CSA Certified,
$40.80
Littelfuse Fuse SLC001, 1 Amps, 600 Volts, UL Class G, Time Delay, Current Limiting, Physical Size: 13/32" x 1 5/16", Branch Circuit Protection, Cost Effective, AC Voltage Rating: 600, DC Voltage Rating: 170, Interrupting Rating: 100,000 AIC @ 600VAC, DC Interrupting Rating: 10,000 AIC, UL Listed, CSA Certified,
$45.20
Littelfuse Fuse SLC.500, 1/2 Amps, 600 Volts, UL Class G, Time Delay, Current Limiting, Physical Size: 13/32" x 1 5/16", Branch Circuit Protection, Cost Effective, AC Voltage Rating: 600, DC Voltage Rating: 170, Interrupting Rating: 100,000 AIC @ 600VAC, DC Interrupting Rating: 10,000 AIC, UL Listed, CSA Certified,
$1416.35
Littelfuse Fuse NLS600, 600 Amps, 600 Volts, One-Time Fuse,, Low Cost Protection, Physical Size: 3 3/32" x 13 3/8", General Purpose Circuits with Little or No Motor Load, Economical, AC Voltage Rating: 600, DC Voltage Rating: 500, Interrupting Rating: 50,000 AIC @ 600VAC, DC Interrupting Rating: 50,000 AIC, UL Listed, CSA Certified,
$1416.35
Littelfuse Fuse NLS500, 500 Amps, 600 Volts, One-Time Fuse,, Low Cost Protection, Physical Size: 3 3/32" x 13 3/8", General Purpose Circuits with Little or No Motor Load, Economical, AC Voltage Rating: 600, DC Voltage Rating: 500, Interrupting Rating: 50,000 AIC @ 600VAC, DC Interrupting Rating: 50,000 AIC, UL Listed, CSA Certified,
$1416.35
Littelfuse Fuse NLS450, 450 Amps, 600 Volts, One-Time Fuse,, Low Cost Protection, Physical Size: 3 3/32" x 13 3/8", General Purpose Circuits with Little or No Motor Load, Economical, AC Voltage Rating: 600, DC Voltage Rating: 500, Interrupting Rating: 50,000 AIC @ 600VAC, DC Interrupting Rating: 50,000 AIC, UL Listed, CSA Certified,
$889.65
Littelfuse Fuse NLS400, 400 Amps, 600 Volts, One-Time Fuse,, Low Cost Protection, Physical Size: 2 19/32" x 11 5/8", General Purpose Circuits with Little or No Motor Load, Economical, AC Voltage Rating: 600, DC Voltage Rating: 500, Interrupting Rating: 50,000 AIC @ 600VAC, DC Interrupting Rating: 50,000 AIC, UL Listed, CSA Certified,
$889.65
Littelfuse Fuse NLS350, 350 Amps, 600 Volts, One-Time Fuse,, Low Cost Protection, Physical Size: 2 19/32" x 11 5/8", General Purpose Circuits with Little or No Motor Load, Economical, AC Voltage Rating: 600, DC Voltage Rating: 500, Interrupting Rating: 50,000 AIC @ 600VAC, DC Interrupting Rating: 50,000 AIC, UL Listed, CSA Certified,
$889.65
Littelfuse Fuse NLS300, 300 Amps, 600 Volts, One-Time Fuse,, Low Cost Protection, Physical Size: 2 19/32" x 11 5/8", General Purpose Circuits with Little or No Motor Load, Economical, AC Voltage Rating: 600, DC Voltage Rating: 500, Interrupting Rating: 50,000 AIC @ 600VAC, DC Interrupting Rating: 50,000 AIC, UL Listed, CSA Certified,
$889.65
Littelfuse Fuse NLS250, 250 Amps, 600 Volts, One-Time Fuse,, Low Cost Protection, Physical Size: 2 19/32" x 11 5/8", General Purpose Circuits with Little or No Motor Load, Economical, AC Voltage Rating: 600, DC Voltage Rating: 500, Interrupting Rating: 50,000 AIC @ 600VAC, DC Interrupting Rating: 50,000 AIC, UL Listed, CSA Certified,
$889.65
Littelfuse Fuse NLS225, 225 Amps, 600 Volts, One-Time Fuse,, Low Cost Protection, Physical Size: 2 19/32" x 11 5/8", General Purpose Circuits with Little or No Motor Load, Economical, AC Voltage Rating: 600, DC Voltage Rating: 500, Interrupting Rating: 50,000 AIC @ 600VAC, DC Interrupting Rating: 50,000 AIC, UL Listed, CSA Certified,
$422.40
Littelfuse Fuse NLS200, 200 Amps, 600 Volts, One-Time Fuse,, Low Cost Protection, Physical Size: 1 27/32" x 9 5/8", General Purpose Circuits with Little or No Motor Load, Economical, AC Voltage Rating: 600, DC Voltage Rating: 600, Interrupting Rating: 50,000 AIC @ 600VAC, DC Interrupting Rating: 50,000 AIC, UL Listed, CSA Certified,
$450.35
Littelfuse Fuse NLS175, 175 Amps, 600 Volts, One-Time Fuse,, Low Cost Protection, Physical Size: 1 27/32" x 9 5/8", General Purpose Circuits with Little or No Motor Load, Economical, AC Voltage Rating: 600, DC Voltage Rating: 600, Interrupting Rating: 50,000 AIC @ 600VAC, DC Interrupting Rating: 50,000 AIC, UL Listed, CSA Certified,
$450.35
Littelfuse Fuse NLS150, 150 Amps, 600 Volts, One-Time Fuse,, Low Cost Protection, Physical Size: 1 27/32" x 9 5/8", General Purpose Circuits with Little or No Motor Load, Economical, AC Voltage Rating: 600, DC Voltage Rating: 600, Interrupting Rating: 50,000 AIC @ 600VAC, DC Interrupting Rating: 50,000 AIC, UL Listed, CSA Certified,
$450.35
Littelfuse Fuse NLS125, 125 Amps, 600 Volts, One-Time Fuse,, Low Cost Protection, Physical Size: 1 27/32" x 9 5/8", General Purpose Circuits with Little or No Motor Load, Economical, AC Voltage Rating: 600, DC Voltage Rating: 600, Interrupting Rating: 50,000 AIC @ 600VAC, DC Interrupting Rating: 50,000 AIC, UL Listed, CSA Certified,
$450.35
Littelfuse Fuse NLS110, 110 Amps, 600 Volts, One-Time Fuse,, Low Cost Protection, Physical Size: 1 27/32" x 9 5/8", General Purpose Circuits with Little or No Motor Load, Economical, AC Voltage Rating: 600, DC Voltage Rating: 600, Interrupting Rating: 50,000 AIC @ 600VAC, DC Interrupting Rating: 50,000 AIC, UL Listed, CSA Certified,
$209.95
Littelfuse Fuse NLS100, 100 Amps, 600 Volts, One-Time Fuse,, Low Cost Protection, Physical Size: 1 5/16" x 7 7/8", General Purpose Circuits with Little or No Motor Load, Economical, AC Voltage Rating: 600, DC Voltage Rating: 600, Interrupting Rating: 50,000 AIC @ 600VAC, DC Interrupting Rating: 50,000 AIC, UL Listed, CSA Certified,
$215.45
Littelfuse Fuse NLS090, 90 Amps, 600 Volts, One-Time Fuse,, Low Cost Protection, Physical Size: 1 5/16" x 7 7/8", General Purpose Circuits with Little or No Motor Load, Economical, AC Voltage Rating: 600, DC Voltage Rating: 600, Interrupting Rating: 50,000 AIC @ 600VAC, DC Interrupting Rating: 50,000 AIC, UL Listed, CSA Certified,