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
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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 30 US LONG BL 125A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 125 A Fast-Acting Fuses Knife Blade Class aR Fuses 30 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US LONG BL 350A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 350 A Fast-Acting Fuses Knife Blade Class aR Fuses 30 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US LONG BL 450A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 450 A Fast-Acting Fuses Knife Blade Class aR Fuses 30 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 63A
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 63 A Fast-Acting Fuses Knife Blade Class aR Fuses 30 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 80A
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 80 A Fast-Acting Fuses Knife Blade Class aR Fuses 30 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 125A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 125 A Fast-Acting Fuses Knife Blade Class aR Fuses 30 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 200A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 200 A Fast-Acting Fuses Knife Blade Class aR Fuses 30 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 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 30 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 400A
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 400 A Fast-Acting Fuses Knife Blade Class aR Fuses 30 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 450A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 450 A Fast-Acting Fuses Knife Blade Class aR Fuses 30 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 700V SIZE 30 FLUSH 500A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 500 A Fast-Acting Fuses Knife Blade Class aR Fuses 30 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT 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 30 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 DIN 110MM 200A
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 200 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 110MM 250A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 250 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 110MM 315A
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 315 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 110MM 400A
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 400 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 110MM 450A
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 450 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 110MM 500A
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 500 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 110MM 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 110MM 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 110MM 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 POWR-SPEED SQB SIZE 31 DIN 80MM 200A
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

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

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

Semiconductor Fuses 315 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 450A
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 450 A 700 VAC Fast-Acting Fuses 600 VDC 150 kA, 200 kA Blade / Bolt Class aR Fuses 31 Visual Side Indicator Bulk PSR