Industrial & Electrical Fuses

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Renewable Energy Solutions

Littelfuse provides a wide range of renewable energy solutions that include high-speed fuses, fast-acting relays, surge protection devices, and temperature sensors. These products from Littelfuse are designed to protect equipment from arc-flashes and fault conditions caused by equipment failure, phase-to-phase or ground faults, insulation breakdown, or temperature extremes. This selection of fuses, relays, surge protection devices, and temperature sensors can be found and used in Battery Energy Storage Systems (BESS), Solar/Photovoltaic (PV) energy solutions, and wind turbines.

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Part #

Industrial & Electrical Fuses 450A 500VAC 500VDC FF L50QS POWR-SPEED

L50QS450.X
Littelfuse
1: ¥39,483.6
4In Stock

Mfr. Part #
L50QS450.X

Mouser Part #
576-L50QS450.X

Littelfuse

Industrial & Electrical Fuses 450A 500VAC 500VDC FF L50QS POWR-SPEED

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Datasheet

4In Stock

¥39,483.6

¥32,728.3

¥30,172.1

¥24,928.3

Min.: 1
Mult.: 1

Semiconductor Fuses

450 A

500 VAC

Fast-Acting Fuses

500 VDC

200 kA

Bolt Down

Class aR Fuses

Without Indicator

Bulk

L50QS

Industrial & Electrical Fuses 60A 500VAC 450VDC FF L50S POWR-SPEED

L50S060.T
Littelfuse
1: ¥11,671.8
11In Stock

Mfr. Part #
L50S060.T

Mouser Part #
576-L50S060.T

Littelfuse

Industrial & Electrical Fuses 60A 500VAC 450VDC FF L50S POWR-SPEED

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Datasheet

11In Stock

¥11,671.8

¥9,959.4

¥9,243.5

¥7,391.5

View

Min.: 1
Mult.: 1

Semiconductor Fuses

60 A

500 VAC

Fast-Acting Fuses

450 VDC

20 kA

Round Body Blade Fuses

Stud

Bolt Down

Without Indicator

Bulk

L50S

Industrial & Electrical Fuses 50A 700VAC 700VDC FF L70QS POWR-SPEED

L70QS050.V
Littelfuse
1: ¥17,239.5
9In Stock

Mfr. Part #
L70QS050.V

Mouser Part #
576-L70QS050.V

Littelfuse

Industrial & Electrical Fuses 50A 700VAC 700VDC FF L70QS POWR-SPEED

Learn More

Datasheet

9In Stock

¥17,239.5

¥14,885.9

¥13,185

¥10,907.8

¥10,042.4

Min.: 1
Mult.: 1

Semiconductor Fuses

50 A

700 VAC

Fast-Acting Fuses

700 VDC

200 kA

Bolt Down

Class aR Fuses

Without Indicator

Bulk

L70QS

Industrial & Electrical Fuses 100A 700VAC 700VDC FF L70QS POWR-SPEED

L70QS100.V
Littelfuse
1: ¥21,845.5
12In Stock
22Expected 9/24/2026

Mfr. Part #
L70QS100.V

Mouser Part #
576-L70QS100.V

Littelfuse

Industrial & Electrical Fuses 100A 700VAC 700VDC FF L70QS POWR-SPEED

Learn More

Datasheet

12In Stock

22Expected 9/24/2026

¥21,845.5

¥18,692.9

¥17,269.4

¥13,814.5

¥12,716.6

Min.: 1
Mult.: 1

Semiconductor Fuses

100 A

700 VAC

Fast-Acting Fuses

700 VDC

200 kA

Bolt Down

Class aR Fuses

Without Indicator

Bulk

L70QS

Industrial & Electrical Fuses 125A 700VAC 700VDC FF L70QS POWR-SPEED

L70QS125.V
Littelfuse
1: ¥30,790
6In Stock

Mfr. Part #
L70QS125.V

Mouser Part #
576-L70QS125.V

Littelfuse

Industrial & Electrical Fuses 125A 700VAC 700VDC FF L70QS POWR-SPEED

Learn More

Datasheet

6In Stock

¥30,790

¥25,527.9

¥23,538

¥19,453.6

Min.: 1
Mult.: 1

Semiconductor Fuses

125 A

700 VAC

Fast-Acting Fuses

700 VDC

200 kA

Bolt Down

Class aR Fuses

Without Indicator

Bulk

L70QS

Industrial & Electrical Fuses 250A 700VAC 700VDC FF L70QS POWR-SPEED

L70QS250.X
Littelfuse
1: ¥44,049.7
1In Stock

Mfr. Part #
L70QS250.X

Mouser Part #
576-L70QS250.X

Littelfuse

Industrial & Electrical Fuses 250A 700VAC 700VDC FF L70QS POWR-SPEED

Learn More

Datasheet

1In Stock

¥44,049.7

¥36,513.8

¥34,497.3

¥28,497.8

Min.: 1
Mult.: 1

Semiconductor Fuses

250 A

700 VAC

Fast-Acting Fuses

700 VDC

200 kA

Bolt Down

Class aR Fuses

Without Indicator

Bulk

L70QS

Industrial & Electrical Fuses 750V FAST BLOW 50A

L75QS050.V
Littelfuse
1: ¥17,664.7
14In Stock

Mfr. Part #
L75QS050.V

Mouser Part #
576-L75QS050.V

Littelfuse

Industrial & Electrical Fuses 750V FAST BLOW 50A

Learn More

Datasheet

14In Stock

¥17,664.7

¥14,756.3

¥14,025.5

¥11,175.2

¥10,289.9

Min.: 1
Mult.: 1

Semiconductor Fuses

50 A

750 VDC

50 kA

Round Body Fuses

Stud

Bolt Down

Without Indicator

Bulk

L75

Industrial & Electrical Fuses 750V FAST BLOW 100A

L75QS100.V
Littelfuse
1: ¥22,672.7
2In Stock
105Expected 10/12/2026

Mfr. Part #
L75QS100.V

Mouser Part #
576-L75QS100.V

Littelfuse

Industrial & Electrical Fuses 750V FAST BLOW 100A

Learn More

Datasheet

2In Stock

105Expected 10/12/2026

¥22,672.7

¥18,799.2

¥17,337.5

¥14,337.8

¥13,196.6

Min.: 1
Mult.: 1

Semiconductor Fuses

100 A

750 VDC

50 kA

Round Body Fuses

Stud

Bolt Down

Without Indicator

Bulk

L75

Industrial & Electrical Fuses 125A 250VAC 250VDC FF L25S POWR-SPEED

L25S125.V
Littelfuse
1: ¥16,673.1
4In Stock

Mfr. Part #
L25S125.V

Mouser Part #
576-L25S125.V

Littelfuse

Industrial & Electrical Fuses 125A 250VAC 250VDC FF L25S POWR-SPEED

Learn More

Datasheet

4In Stock

¥16,673.1

¥13,829.5

¥12,753.2

¥10,550.7

¥9,713.5

Min.: 1
Mult.: 1

Semiconductor Fuses

125 A

250 VAC

Fast-Acting Fuses

250 VDC

20 kA

Bolt Down

Class aR Fuses

5AG

Without Indicator

Bulk

L25S

Industrial & Electrical Fuses 70A 500VAC 500VDC FF L50QS POWR-SPEED

L50QS070.T
Littelfuse
1: ¥11,720
11In Stock

Mfr. Part #
L50QS070.T

Mouser Part #
576-L50QS070.T

Littelfuse

Industrial & Electrical Fuses 70A 500VAC 500VDC FF L50QS POWR-SPEED

Learn More

Datasheet

11In Stock

¥11,720

¥10,005.9

¥9,567.4

¥7,421.3

View

Min.: 1
Mult.: 1

Semiconductor Fuses

70 A

500 VAC

Fast-Acting Fuses

500 VDC

200 kA

Bolt Down

Class aR Fuses

Without Indicator

Bulk

L50QS

Industrial & Electrical Fuses 225A 500VAC 500VDC FF L50QS POWR-SPEED

L50QS225.V
Littelfuse
1: ¥24,449.9
3In Stock

Mfr. Part #
L50QS225.V

Mouser Part #
576-L50QS225.V

Littelfuse

Industrial & Electrical Fuses 225A 500VAC 500VDC FF L50QS POWR-SPEED

Learn More

Datasheet

3In Stock

¥24,449.9

¥22,121.2

¥20,398.7

¥16,060.2

¥15,123.4

Min.: 1
Mult.: 1

Semiconductor Fuses

225 A

500 VAC

Fast-Acting Fuses

500 VDC

200 kA

Bolt Down

Class aR Fuses

Without Indicator

Bulk

L50QS

Industrial & Electrical Fuses 35A 700VAC 700VDC FF L70QS POWR-SPEED

L70QS035.V
Littelfuse
1: ¥17,237.9
8In Stock

Mfr. Part #
L70QS035.V

Mouser Part #
576-L70QS035.V

Littelfuse

Industrial & Electrical Fuses 35A 700VAC 700VDC FF L70QS POWR-SPEED

Learn More

Datasheet

8In Stock

¥17,237.9

¥14,297.9

¥13,186.7

¥10,907.8

¥10,042.4

Min.: 1
Mult.: 1

Semiconductor Fuses

35 A

700 VAC

Fast-Acting Fuses

700 VDC

200 kA

Bolt Down

Class aR Fuses

Without Indicator

Bulk

L70QS

Industrial & Electrical Fuses 400A 700VAC 700VDC FF L70QS POWR-SPEED

L70QS400.X
Littelfuse
1: ¥42,591.4
4In Stock

Mfr. Part #
L70QS400.X

Mouser Part #
576-L70QS400.X

Littelfuse

Industrial & Electrical Fuses 400A 700VAC 700VDC FF L70QS POWR-SPEED

Learn More

Datasheet

4In Stock

¥42,591.4

¥34,457.4

¥32,455.9

¥26,884.9

Min.: 1
Mult.: 1

Semiconductor Fuses

400 A

700 VAC

Fast-Acting Fuses

700 VDC

200 kA

Bolt Down

Class aR Fuses

Without Indicator

Bulk

L70QS

Industrial & Electrical Fuses 500A 700VAC 700VDC FF L70QS POWR-SPEED

L70QS500.X
Littelfuse
1: ¥70,838.3
4In Stock

Mfr. Part #
L70QS500.X

Mouser Part #
576-L70QS500.X

Littelfuse

Industrial & Electrical Fuses 500A 700VAC 700VDC FF L70QS POWR-SPEED

Learn More

Datasheet

4In Stock

¥70,838.3

¥58,085.2

¥53,911.1

Quote

Min.: 1
Mult.: 1

Semiconductor Fuses

500 A

700 VAC

Fast-Acting Fuses

700 VDC

200 kA

Bolt Down

Class aR Fuses

Without Indicator

Bulk

L70QS

Industrial & Electrical Fuses 750V FAST BLOW 225A

L75QS225.X
Littelfuse
1: ¥41,724.3
3In Stock

Mfr. Part #
L75QS225.X

Mouser Part #
576-L75QS225.X

Littelfuse

Industrial & Electrical Fuses 750V FAST BLOW 225A

Learn More

Datasheet

3In Stock

¥41,724.3

¥37,892.4

¥35,487.3

¥29,311.7

Min.: 1
Mult.: 1

Semiconductor Fuses

225 A

750 VDC

50 kA

Round Body Fuses

Stud

Bolt Down

Without Indicator

Bulk

L75

Industrial & Electrical Fuses 750VDC HIGHSPEED SEMICONDUCTOR FUSE 600A

L75QS600.X
Littelfuse
1: ¥74,529.1
2In Stock

Mfr. Part #
L75QS600.X

Mouser Part #
576-L75QS600.X

Littelfuse

Industrial & Electrical Fuses 750VDC HIGHSPEED SEMICONDUCTOR FUSE 600A

Learn More

Datasheet

2In Stock

¥74,529.1

¥59,517

¥56,218.2

Quote

Min.: 1
Mult.: 1

Semiconductor Fuses

600 A

750 VDC

50 kA

Round Body Fuses

Stud

Bolt Down

Without Indicator

Bulk

L75

Industrial & Electrical Fuses 30A 150VAC 150VDC FF L15S POWR-SPEED

L15S030.T
Littelfuse
1: ¥4,125.9
10In Stock

Mfr. Part #
L15S030.T

Mouser Part #
576-L15S030.T

Littelfuse

Industrial & Electrical Fuses 30A 150VAC 150VDC FF L15S POWR-SPEED

Learn More

Datasheet

10In Stock

¥4,125.9

¥3,891.7

¥3,635.9

¥3,023

View

Min.: 1
Mult.: 1

Semiconductor Fuses

30 A

150 VAC

Fast-Acting Fuses

150 VDC

20 kA

Bolt Down

Class aR Fuses

5AG

Without Indicator

Bulk

L15S

Industrial & Electrical Fuses 350A 150VAC 100VDC FF L15S POWR-SPEED

L15S350.T
Littelfuse
1: ¥12,057.2
4In Stock

Mfr. Part #
L15S350.T

Mouser Part #
576-L15S350.T

Littelfuse

Industrial & Electrical Fuses 350A 150VAC 100VDC FF L15S POWR-SPEED

Learn More

Datasheet

4In Stock

¥12,057.2

¥10,843

¥10,000.9

¥8,022.6

¥7,595.8

Min.: 1
Mult.: 1

Semiconductor Fuses

350 A

150 VAC

Fast-Acting Fuses

100 VDC

20 kA

Bolt Down

Class aR Fuses

Without Indicator

Bulk

L15S

Industrial & Electrical Fuses 20A 500VAC 450VDC FF L50S POWR-SPEED

L50S020.T
Littelfuse
1: ¥7,333.3
1In Stock

Mfr. Part #
L50S020.T

Mouser Part #
576-L50S020.T

Littelfuse

Industrial & Electrical Fuses 20A 500VAC 450VDC FF L50S POWR-SPEED

Learn More

Datasheet

1In Stock

¥7,333.3

¥5,786.9

¥5,272

¥4,647.5

View

Min.: 1
Mult.: 1

Semiconductor Fuses

20 A

500 VAC

Fast-Acting Fuses

450 VDC

20 kA

Round Body Fuses

Stud

Ferrule

Without Indicator

Bulk

L50S

Industrial & Electrical Fuses 30A 500VAC 450VDC FF L50S POWR-SPEED

L50S030.T
Littelfuse
1: ¥7,333.3
1In Stock

Mfr. Part #
L50S030.T

Mouser Part #
576-L50S030.T

Littelfuse

Industrial & Electrical Fuses 30A 500VAC 450VDC FF L50S POWR-SPEED

Learn More

Datasheet

1In Stock

¥7,333.3

¥6,084.2

¥5,275.3

¥4,647.5

View

Min.: 1
Mult.: 1

Semiconductor Fuses

30 A

500 VAC

Fast-Acting Fuses

450 VDC

20 kA

Round Body Blade Fuses

Stud

Bolt Down

Without Indicator

Bulk

L50S

Industrial & Electrical Fuses 40A 500VAC 450VDC FF L50S POWR-SPEED

L50S040.T
Littelfuse
1: ¥11,673.5
6In Stock

Mfr. Part #
L50S040.T

Mouser Part #
576-L50S040.T

Littelfuse

Industrial & Electrical Fuses 40A 500VAC 450VDC FF L50S POWR-SPEED

Learn More

Datasheet

6In Stock

¥11,673.5

¥9,682

¥8,931.2

¥7,393.1

View

Min.: 1
Mult.: 1

Semiconductor Fuses

40 A

500 VAC

Fast-Acting Fuses

450 VDC

20 kA

Round Body Blade Fuses

Stud

Bolt Down

Without Indicator

Bulk

L50S

Industrial & Electrical Fuses 150A 500VAC 450VDC FF L50S POWR-SPEED

L50S150.V
Littelfuse
1: ¥18,711.2
4In Stock

Mfr. Part #
L50S150.V

Mouser Part #
576-L50S150.V

Littelfuse

Industrial & Electrical Fuses 150A 500VAC 450VDC FF L50S POWR-SPEED

Learn More

Datasheet

4In Stock

¥18,711.2

¥14,872.6

¥13,729.8

¥11,836.3

¥10,897.8

Min.: 1
Mult.: 1

Semiconductor Fuses

150 A

500 VAC

Fast-Acting Fuses

450 VDC

20 kA

Round Body Blade Fuses

Stud

Bolt Down

Without Indicator

Bulk

L50S

Industrial & Electrical Fuses 200A 500VAC 450VDC FF L50S POWR-SPEED

L50S200.V
Littelfuse
1: ¥18,712.8
14In Stock
13Expected 9/17/2026

Mfr. Part #
L50S200.V

Mouser Part #
576-L50S200.V

Littelfuse

Industrial & Electrical Fuses 200A 500VAC 450VDC FF L50S POWR-SPEED

Learn More

Datasheet

14In Stock

13Expected 9/17/2026

¥18,712.8

¥15,718

¥14,831.1

¥11,836.3

¥10,897.8

Min.: 1
Mult.: 1

Semiconductor Fuses

200 A

500 VAC

Fast-Acting Fuses

450 VDC

20 kA

Round Body Blade Fuses

Stud

Bolt Down

5AG

Without Indicator

Bulk

L50S

Industrial & Electrical Fuses 100A 700VAC 650VDC FF L70S POWR-SPEED

L70S100.V
Littelfuse
1: ¥25,312
4In Stock

Mfr. Part #
L70S100.V

Mouser Part #
576-L70S100.V

Littelfuse

Industrial & Electrical Fuses 100A 700VAC 650VDC FF L70S POWR-SPEED

Learn More

Datasheet

4In Stock

¥25,312

¥20,986.7

¥19,352.3

¥15,998.8

¥14,726.4

Min.: 1
Mult.: 1

Semiconductor Fuses

100 A

700 VAC

Fast-Acting Fuses

650 VDC

20 kA

Round Body Blade Fuses

Stud

Bolt Down

Without Indicator

Bulk

L70S

Industrial & Electrical Fuses 1000A 150VAC 100VDC FF L15S POWR-SPEED

L15S1000V
Littelfuse
1: ¥26,600.9
7In Stock

Mfr. Part #
L15S1000V

Mouser Part #
576-L15S1000V

Littelfuse

Industrial & Electrical Fuses 1000A 150VAC 100VDC FF L15S POWR-SPEED

Learn More

Datasheet

7In Stock

¥26,600.9

¥22,689.3

¥19,721.1

¥16,812.6

¥15,473.9

Min.: 1
Mult.: 1

Semiconductor Fuses

1 kA

150 VAC

Fast-Acting Fuses

100 VDC

100 kA

Bolt Down

Class aR Fuses

Without Indicator

Bulk

L15S

1 A
2 A
3 A
4 A
5 A
6 A
8 A
10 A
12 A
15 A
20 A
25 A
30 A
35 A
40 A
45 A
50 A
60 A
70 A
80 A