PSR High-Speed Square Body Fuses

Littelfuse PSR Series High-Speed Square Body Fuses are specially designed for the protection of power semiconductor devices. The fuses from Littelfuse combine extreme current limitation benefits with balanced performance levels to meet the precise requirements for protecting sensitive power electronics devices. These devices include diodes, triacs, IGBTs, SCRs, MOSFETs, and other solid-state devices that are typically designed for power conversion and power conditioning equipment.

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Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 US LONG BL 500A
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6Factory Stock Available
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Min.: 1
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Semiconductor Fuses 500 A Fast-Acting Fuses Knife Blade Class aR Fuses 31 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 US LONG BL 630A
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3Factory Stock Available
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Min.: 3
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Semiconductor Fuses 630 A Fast-Acting Fuses Knife Blade Class aR Fuses 31 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 US LONG BL 800A
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12Factory Stock Available
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Min.: 3
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Semiconductor Fuses 800 A Fast-Acting Fuses Knife Blade Class aR Fuses 31 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 US SHRT BL 500A
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12Factory Stock Available
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Min.: 1
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Semiconductor Fuses 500 A Fast-Acting Fuses Knife Blade Class aR Fuses 31 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 US SHRT BL 550A
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6Factory Stock Available
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Min.: 1
Mult.: 1

Semiconductor Fuses 550 A Fast-Acting Fuses Knife Blade Class aR Fuses 31 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 US SHRT BL 800A
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6Factory Stock Available
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Min.: 3
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Semiconductor Fuses 800 A Fast-Acting Fuses Knife Blade Class aR Fuses 31 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB Size 32 DIN 110MM 500A
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3Factory Stock Available
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Min.: 1
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Semiconductor Fuses 500 A 700 VAC Fast-Acting Fuses 600 VDC 150 kA, 200 kA Blade / Bolt Class aR Fuses 32 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB Size 32 DIN 110MM 550A
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1Factory Stock Available
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Min.: 1
Mult.: 1

Semiconductor Fuses 550 A 700 VAC Fast-Acting Fuses 600 VDC 150 kA, 200 kA Blade / Bolt Class aR Fuses 32 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB Size 32 DIN 80MM 700A
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9Factory Stock Available
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Min.: 1
Mult.: 1

Semiconductor Fuses 700 A 700 VAC Fast-Acting Fuses 600 VDC 150 kA, 200 kA Blade / Bolt Class aR Fuses 32 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB Size 32 DIN 80MM 800A
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2Factory Stock Available
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Min.: 1
Mult.: 1

Semiconductor Fuses 800 A 700 VAC Fast-Acting Fuses 600 VDC 150 kA, 200 kA Blade / Bolt Class aR Fuses 32 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB Size 32 DIN 80MM 1000A
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2Factory Stock Available
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Min.: 1
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Semiconductor Fuses 1 kA 700 VAC Fast-Acting Fuses 600 VDC 150 kA, 200 kA Blade / Bolt Class aR Fuses 32 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB Size 32 DIN 80MM 1100A
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4Factory Stock Available
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Min.: 1
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Semiconductor Fuses 1.1 kA 700 VAC Fast-Acting Fuses 600 VDC 150 kA, 200 kA Blade / Bolt Class aR Fuses 32 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 400A 700V SIZE 32 Flush End Mtrc Thred
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3Factory Stock Available
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Min.: 1
Mult.: 1

Semiconductor Fuses 400 A 700 VAC Fast-Acting Fuses 600 VDC Quick Connect Class aR Fuses 32 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 450A 700V SIZE 32 Flush End Mtrc Thred
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30Factory Stock Available
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Min.: 1
Mult.: 1

Semiconductor Fuses 450 A 700 VAC Fast-Acting Fuses 600 VDC Quick Connect Class aR Fuses 32 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 500A 700V SIZE 32 Flush End Mtrc Thred
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3Factory Stock Available
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Min.: 1
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Semiconductor Fuses 500 A 700 VAC Fast-Acting Fuses 600 VDC Quick Connect Class aR Fuses 32 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 630A 700VAC SIZE 32 POWER-SPEED FLUSH M
Datasheet
6Factory Stock Available
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Min.: 1
Mult.: 1

Semiconductor Fuses 630 A 700 VAC Fast-Acting Fuses 600 VDC Quick Connect Class aR Fuses 32 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 800A 700VAC SIZE 32 POWER-SPEED FLUSH M
Datasheet
12Factory Stock Available
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Min.: 3
Mult.: 3

Semiconductor Fuses 800 A 700 VAC Fast-Acting Fuses 600 VDC Quick Connect Class aR Fuses 32 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB Size 32 US LONG BL 800A
Datasheet
1Factory Stock Available
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Min.: 1
Mult.: 1

Semiconductor Fuses 800 A Fast-Acting Fuses Knife Blade Class aR Fuses 32 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB Size 32 US LONG BL 900A
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1Factory Stock Available
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Min.: 1
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Semiconductor Fuses 900 A Fast-Acting Fuses Knife Blade Class aR Fuses 32 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB Size 32 US LONG BL 1000A
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4Factory Stock Available
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Min.: 1
Mult.: 1

Semiconductor Fuses 1 kA Fast-Acting Fuses Knife Blade Class aR Fuses 32 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB Size 32 US LONG BL 1100A
Datasheet
7Factory Stock Available
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Min.: 1
Mult.: 1

Semiconductor Fuses 1.1 kA Fast-Acting Fuses Knife Blade Class aR Fuses 32 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB Size 32 US SHRT BL 400A
Datasheet
3Factory Stock Available
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Min.: 1
Mult.: 1

Semiconductor Fuses 400 A Fast-Acting Fuses Knife Blade Class aR Fuses 32 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB Size 32 US SHRT BL 450A
Datasheet
4Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Semiconductor Fuses 450 A Fast-Acting Fuses Knife Blade Class aR Fuses 32 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB Size 32 US SHRT BL 630A
Datasheet
2Factory Stock Available
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Min.: 1
Mult.: 1

Semiconductor Fuses 630 A Fast-Acting Fuses Knife Blade Class aR Fuses 32 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB Size 32 US SHRT BL 700A
Datasheet
3Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Semiconductor Fuses 700 A Fast-Acting Fuses Knife Blade Class aR Fuses 32 Visual Indicator Bulk PSR