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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Description Datasheet Availability Pricing (IDR) Filter the results in the table by unit price based on your quantity.
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 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
Non-Stocked Lead-Time 18 Weeks
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
Non-Stocked Lead-Time 18 Weeks
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
Non-Stocked Lead-Time 15 Weeks
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.: 1
Mult.: 1

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
Non-Stocked Lead-Time 15 Weeks
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 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
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 US SHRT 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 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 31 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 US SHRT 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 SHRT BL 500A
Datasheet
Non-Stocked Lead-Time 18 Weeks
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 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 31 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 US SHRT BL 630A
Datasheet
Non-Stocked Lead-Time 15 Weeks
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 SHRT 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 SHRT BL 800A
Datasheet
Non-Stocked Lead-Time 15 Weeks
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 SHORT 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 32 DIN 110MM 400A
Datasheet
Non-Stocked Lead-Time 21 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 32 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB Size 32 DIN 110MM 450A
Datasheet
Non-Stocked Lead-Time 21 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 32 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB Size 32 DIN 110MM 500A
Datasheet
Non-Stocked Lead-Time 21 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 32 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB Size 32 DIN 110MM 550A
Datasheet
Non-Stocked Lead-Time 21 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 32 Visual Side Indicator Bulk PSR