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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Voltage Rating AC
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Voltage Rating DC
Interrupt Rating
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Class
Fuse Size/Group
Indicator Style
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Series
Littelfuse Industrial & Electrical Fuses 250A 700V SIZE 31 Flush End In. Thred
Datasheet
Non-Stocked Lead-Time 25 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 250 A 700 VAC Fast-Acting Fuses 600 VDC Quick Connect Class aR Fuses 31 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 315A 700V SIZE 31 Flush End In. Thred
Datasheet
1Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Semiconductor Fuses 315 A 700 VAC Fast-Acting Fuses 600 VDC Quick Connect Class aR Fuses 31 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 350A 700V SIZE 31 Flush End In. Thred
Datasheet
9Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Semiconductor Fuses 350 A 700 VAC Fast-Acting Fuses 600 VDC Quick Connect Class aR Fuses 31 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 400A 700V SIZE 31 Flush End In. Thred
Datasheet
Non-Stocked Lead-Time 25 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 400 A 700 VAC Fast-Acting Fuses 600 VDC Quick Connect Class aR Fuses 31 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 450A 700V SIZE 31 Flush End In. Thred
Datasheet
Non-Stocked Lead-Time 25 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 450 A 700 VAC Fast-Acting Fuses 600 VDC Quick Connect Class aR Fuses 31 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 500A 700V SIZE 31 Flush End In. Thred
Datasheet
Non-Stocked Lead-Time 25 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 500 A 700 VAC Fast-Acting Fuses 600 VDC Quick Connect Class aR Fuses 31 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 550A 700V SIZE 31 Flush End In. Thred
Datasheet
Non-Stocked Lead-Time 25 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 550 A 700 VAC Fast-Acting Fuses 600 VDC Quick Connect Class aR Fuses 31 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 630A 700V SIZE 31 Flush End In. Thred
Datasheet
Non-Stocked Lead-Time 25 Weeks
Min.: 3
Mult.: 3

Semiconductor Fuses 630 A 700 VAC Fast-Acting Fuses 600 VDC Quick Connect Class aR Fuses 31 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 700A 700V SIZE 31 Flush End In. Thred
Datasheet
Non-Stocked Lead-Time 25 Weeks
Min.: 3
Mult.: 3

Semiconductor Fuses 700 A 700 VAC Fast-Acting Fuses 600 VDC Quick Connect Class aR Fuses 31 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 800A 700V SIZE 31 Flush End In. Thred
Datasheet
Non-Stocked Lead-Time 25 Weeks
Min.: 3
Mult.: 3

Semiconductor Fuses 800 A 700 VAC Fast-Acting Fuses 600 VDC Quick Connect Class aR Fuses 31 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 US LONG BL 200A
Datasheet
3Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Semiconductor Fuses 200 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 250A
Datasheet
6Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Semiconductor Fuses 250 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 315A
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 315 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 350A
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 350 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 400A
Datasheet
3Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Semiconductor Fuses 400 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 450A
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 450 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 500A
Datasheet
6Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

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 550A
Datasheet
Non-Stocked Lead-Time 18 Weeks
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 LONG BL 630A
Datasheet
3Factory Stock Available
More Info Available
Min.: 3
Mult.: 3

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 700A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 3
Mult.: 3

Semiconductor Fuses 700 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
Datasheet
12Factory Stock Available
More Info Available
Min.: 3
Mult.: 3

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 LONG BL 900A
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 3
Mult.: 3

Semiconductor Fuses 900 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 200A
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 200 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 250A
Datasheet
Lead-Time 15 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 250 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 315A
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 315 A Fast-Acting Fuses Knife Blade Class aR Fuses 31 Visual Indicator Bulk PSR