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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Qty. RoHS ECAD Model Product
Current Rating
Voltage Rating AC
Fuse Type
Voltage Rating DC
Interrupt Rating
Termination Style
Class
Fuse Size / Group
Indicator Style
Packaging
Series
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 DIN 80MM 550A
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 550 A 700 VAC Fast-Acting Fuses 600 VDC 150 kA, 200 kA Blade / Bolt Class aR Fuses 31 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 DIN 80MM 630A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 3
Mult.: 3

Semiconductor Fuses 630 A 700 VAC Fast-Acting Fuses 600 VDC 150 kA, 200 kA Blade / Bolt Class aR Fuses 31 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 DIN 80MM 700A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 3
Mult.: 3

Semiconductor Fuses 700 A 700 VAC Fast-Acting Fuses 600 VDC 150 kA, 200 kA Blade / Bolt Class aR Fuses 31 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 DIN 80MM 800A
Datasheet
6Factory Stock Available
More Info Available
Min.: 3
Mult.: 3

Semiconductor Fuses 800 A 700 VAC Fast-Acting Fuses 600 VDC 150 kA, 200 kA Blade / Bolt Class aR Fuses 31 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 DIN 80MM 900A
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 3
Mult.: 3

Semiconductor Fuses 900 A 700 VAC Fast-Acting Fuses 550 VDC 150 kA, 200 kA Blade / Bolt Class aR Fuses 31 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 200A 700V SIZE 31 Flush End Mtrc Thred
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 200 A 700 VAC Fast-Acting Fuses 600 VDC Quick Connect Class aR Fuses 31 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 250A 700V SIZE 31 Flush End Mtrc Thred
Datasheet
Non-Stocked Lead-Time 15 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 Mtrc Thred
Datasheet
Non-Stocked Lead-Time 18 Weeks
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 400A 700V SIZE 31 Flush End Mtrc Thred
Datasheet
9Factory Stock Available
More Info Available
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 Mtrc Thred
Datasheet
Non-Stocked Lead-Time 18 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 Mtrc Thred
Datasheet
Non-Stocked Lead-Time 18 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 Mtrc Thred
Datasheet
Non-Stocked Lead-Time 15 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 Mtrc Thred
Datasheet
27Factory Stock Available
More Info Available
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 800A 700V SIZE 31 Flush End Mtrc Thred
Datasheet
Non-Stocked Lead-Time 15 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 200A 700V SIZE 31 Flush End In. Thred
Datasheet
Non-Stocked Lead-Time 25 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 200 A 700 VAC Fast-Acting Fuses 600 VDC Quick Connect Class aR Fuses 31 Visual Side Indicator Bulk PSR
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