Industrial & Electrical Fuses

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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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (EUR) Filter the results in the table by unit price based on your quantity.	Qty.	Product	Current Rating	Voltage Rating AC	Fuse Type	Voltage Rating DC	Interrupt Rating	Termination Style	Class	Fuse Size/Group	Indicator Style	Packaging	Series
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 70 US LONG BL 80A PSR070UL0080Z Littelfuse 3: 274,29 € 6Factory Stock Available	Mfr. Part No. PSR070UL0080Z Mouser Part No 576-PSR070UL0080Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 70 US LONG BL 80A Learn More about Littelfuse psr fuses	Datasheet	6Factory Stock Available More Info Available	274,29 € 249,91 € 240,89 € Quote Quote	Min.: 3 Mult.: 3	Semiconductor Fuses	80 A		Fast-Acting Fuses			Knife Blade	Class aR Fuses	70	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 71 DIN 110MM 160A PSR071DL0160Z Littelfuse 3: 322,78 € 15Factory Stock Available	Mfr. Part No. PSR071DL0160Z Mouser Part No 576-PSR071DL0160Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 71 DIN 110MM 160A Learn More about Littelfuse psr fuses	Datasheet	15Factory Stock Available More Info Available	322,78 € 301,18 € 290,53 € Quote Quote	Min.: 3 Mult.: 3	Semiconductor Fuses	160 A	1.3 kVAC	Fast-Acting Fuses	1 kVDC	100 kA, 150 kA	Blade / Bolt	Class aR Fuses	71	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 71 DIN 110MM 200A PSR071DL0200Z Littelfuse 3: 346,98 € 3Factory Stock Available	Mfr. Part No. PSR071DL0200Z Mouser Part No 576-PSR071DL0200Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 71 DIN 110MM 200A Learn More about Littelfuse psr fuses	Datasheet	3Factory Stock Available More Info Available	346,98 € 296,48 € 276,77 € Quote Quote	Min.: 3 Mult.: 3	Semiconductor Fuses	200 A	1.3 kVAC	Fast-Acting Fuses	1 kVDC	100 kA, 150 kA	Blade / Bolt	Class aR Fuses	71	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses 1K V SIZE 71 FLUSH 315A PSR071DL0315Z Littelfuse 1: 354,95 € 5Factory Stock Available	Mfr. Part No. PSR071DL0315Z Mouser Part No 576-PSR071DL0315Z	Littelfuse	Industrial & Electrical Fuses 1K V SIZE 71 FLUSH 315A Learn More about Littelfuse psr fuses	Datasheet	5Factory Stock Available More Info Available	354,95 € 298,18 € 276,66 € Quote Quote	Min.: 1 Mult.: 1	Semiconductor Fuses	315 A	1.3 kVAC	Fast-Acting Fuses	1 kVDC	100 kA, 150 kA	Blade / Bolt	Class aR Fuses	71	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 71 DIN 110MM 350A PSR071DL0350Z Littelfuse 3: 385,30 € 9Factory Stock Available	Mfr. Part No. PSR071DL0350Z Mouser Part No 576-PSR071DL0350Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 71 DIN 110MM 350A Learn More about Littelfuse psr fuses	Datasheet	9Factory Stock Available More Info Available	385,30 € 312,42 € 287,87 € Quote Quote	Min.: 3 Mult.: 3	Semiconductor Fuses	350 A	1.3 kVAC	Fast-Acting Fuses	1 kVDC	100 kA, 150 kA	Blade / Bolt	Class aR Fuses	71	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 71 DIN 110MM 400A PSR071DL0400Z Littelfuse 1: 322,78 € 9Factory Stock Available	Mfr. Part No. PSR071DL0400Z Mouser Part No 576-PSR071DL0400Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 71 DIN 110MM 400A Learn More about Littelfuse psr fuses	Datasheet	9Factory Stock Available More Info Available	322,78 € 291,80 € 281,15 € Quote Quote	Min.: 1 Mult.: 1	Semiconductor Fuses	400 A	1.3 kVAC	Fast-Acting Fuses	1 kVDC	100 kA, 150 kA	Blade / Bolt	Class aR Fuses	71	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 71 DIN 110MM 500A PSR071DL0500Z Littelfuse 3: 462,54 € 13Factory Stock Available	Mfr. Part No. PSR071DL0500Z Mouser Part No 576-PSR071DL0500Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 71 DIN 110MM 500A	Datasheet	13Factory Stock Available More Info Available	462,54 € 379,80 € 345,63 €	Min.: 3 Mult.: 3	Semiconductor Fuses	500 A	1.2 kVAC	Fast-Acting Fuses	900 VDC	100 kA, 150 kA	Blade / Bolt	Class aR Fuses	71	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses 160A 1250VAC SIZE 71 POWER-SPEED FLUSH M PSR071FL0160Z Littelfuse 1: 351,46 € 7Factory Stock Available	Mfr. Part No. PSR071FL0160Z Mouser Part No 576-PSR071FL0160Z	Littelfuse	Industrial & Electrical Fuses 160A 1250VAC SIZE 71 POWER-SPEED FLUSH M Learn More about Littelfuse psr fuses	Datasheet	7Factory Stock Available More Info Available	351,46 € 291,19 € 268,35 €	Min.: 1 Mult.: 1	Semiconductor Fuses	160 A	1.3 kVAC	Fast-Acting Fuses	1 kVDC		Quick Connect	Class aR Fuses	71	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses 250A 1250VAC SIZE 71 POWER-SPEED FLUSH M PSR071FL0250Z Littelfuse 1: 351,46 € 10Factory Stock Available	Mfr. Part No. PSR071FL0250Z Mouser Part No 576-PSR071FL0250Z	Littelfuse	Industrial & Electrical Fuses 250A 1250VAC SIZE 71 POWER-SPEED FLUSH M Learn More about Littelfuse psr fuses	Datasheet	10Factory Stock Available More Info Available	351,46 € 291,19 € 268,35 €	Min.: 1 Mult.: 1	Semiconductor Fuses	250 A	1.3 kVAC	Fast-Acting Fuses	1 kVDC		Quick Connect	Class aR Fuses	71	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses 280A 700V SIZE 71 Flush End Mtrc Thred PSR071FL0280Z Littelfuse 1: 309,26 € 14Factory Stock Available	Mfr. Part No. PSR071FL0280Z Mouser Part No 576-PSR071FL0280Z	Littelfuse	Industrial & Electrical Fuses 280A 700V SIZE 71 Flush End Mtrc Thred Learn More about Littelfuse psr fuses	Datasheet	14Factory Stock Available More Info Available	309,26 € 265,23 € 250,45 € Quote Quote	Min.: 1 Mult.: 1	Semiconductor Fuses	280 A	1.3 kVAC	Fast-Acting Fuses	1 kVDC		Quick Connect	Class aR Fuses	71	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses 350A 1250VAC SIZE 71 POWER-SPEED FLUSH I PSR071FS0350Z Littelfuse 1: 351,46 € 1Factory Stock Available	Mfr. Part No. PSR071FS0350Z Mouser Part No 576-PSR071FS0350Z	Littelfuse	Industrial & Electrical Fuses 350A 1250VAC SIZE 71 POWER-SPEED FLUSH I Learn More about Littelfuse psr fuses	Datasheet	1Factory Stock Available More Info Available	351,46 € 291,19 € 268,35 €	Min.: 1 Mult.: 1	Semiconductor Fuses	350 A	1.3 kVAC	Fast-Acting Fuses	1 kVDC		Quick Connect	Class aR Fuses	71	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 71 US LONG BL 250A PSR071UL0250Z Littelfuse 3: 387,10 € 3Factory Stock Available	Mfr. Part No. PSR071UL0250Z Mouser Part No 576-PSR071UL0250Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 71 US LONG BL 250A Learn More about Littelfuse psr fuses	Datasheet	3Factory Stock Available More Info Available	387,10 € 320,76 € 295,62 €	Min.: 3 Mult.: 3	Semiconductor Fuses	250 A		Fast-Acting Fuses			Knife Blade	Class aR Fuses	71	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 71 US LONG BL 315A PSR071UL0315Z Littelfuse 3: 322,78 € 15Factory Stock Available	Mfr. Part No. PSR071UL0315Z Mouser Part No 576-PSR071UL0315Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 71 US LONG BL 315A Learn More about Littelfuse psr fuses	Datasheet	15Factory Stock Available More Info Available	322,78 € 300,11 € 288,28 € Quote Quote	Min.: 3 Mult.: 3	Semiconductor Fuses	315 A		Fast-Acting Fuses			Knife Blade	Class aR Fuses	71	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 71 US LONG BL 400A PSR071UL0400Z Littelfuse 3: 326,09 € 18Factory Stock Available	Mfr. Part No. PSR071UL0400Z Mouser Part No 576-PSR071UL0400Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 71 US LONG BL 400A Learn More about Littelfuse psr fuses	Datasheet	18Factory Stock Available More Info Available	326,09 € 309,53 €	Min.: 3 Mult.: 3	Semiconductor Fuses	400 A		Fast-Acting Fuses			Knife Blade	Class aR Fuses	71	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 71 US LONG BL 450A PSR071UL0450Z Littelfuse 3: 355,14 € 24Factory Stock Available	Mfr. Part No. PSR071UL0450Z Mouser Part No 576-PSR071UL0450Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 71 US LONG BL 450A Learn More about Littelfuse psr fuses	Datasheet	24Factory Stock Available More Info Available	355,14 € 323,21 € 311,50 € Quote Quote	Min.: 3 Mult.: 3	Semiconductor Fuses	450 A		Fast-Acting Fuses			Knife Blade	Class aR Fuses	71	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses 900V FAST BLOW 500A PSR071UL0500Z Littelfuse 3: 462,54 € 3Factory Stock Available	Mfr. Part No. PSR071UL0500Z Mouser Part No 576-PSR071UL0500Z	Littelfuse	Industrial & Electrical Fuses 900V FAST BLOW 500A	Datasheet	3Factory Stock Available More Info Available	462,54 € 379,80 € 345,63 €	Min.: 3 Mult.: 3	Semiconductor Fuses	500 A		Fast-Acting Fuses			Knife Blade	Class aR Fuses	71	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses 900V FAST BLOW 550A PSR071UL0550Z Littelfuse 1: 490,86 € 9Factory Stock Available	Mfr. Part No. PSR071UL0550Z Mouser Part No 576-PSR071UL0550Z	Littelfuse	Industrial & Electrical Fuses 900V FAST BLOW 550A	Datasheet	9Factory Stock Available More Info Available	490,86 € 403,05 € 366,78 €	Min.: 1 Mult.: 1	Semiconductor Fuses	550 A		Fast-Acting Fuses			Knife Blade	Class aR Fuses	71	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 72 DIN 110MM 250A PSR072DL0250X Littelfuse 1: 436,24 € 3Factory Stock Available	Mfr. Part No. PSR072DL0250X Mouser Part No 576-PSR072DL0250X	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 72 DIN 110MM 250A Learn More about Littelfuse psr fuses	Datasheet	3Factory Stock Available More Info Available	436,24 € 361,36 € 357,17 €	Min.: 1 Mult.: 1	Semiconductor Fuses	250 A	1.3 kVAC	Fast-Acting Fuses	1 kVDC	100 kA, 150 kA	Blade / Bolt	Class aR Fuses	72	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 72 DIN 110MM 550A PSR072DL0550X Littelfuse 1: 478,25 € 2Factory Stock Available	Mfr. Part No. PSR072DL0550X Mouser Part No 576-PSR072DL0550X	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 72 DIN 110MM 550A Learn More about Littelfuse psr fuses	Datasheet	2Factory Stock Available More Info Available	478,25 € 396,12 € 364,99 € Quote Quote	Min.: 1 Mult.: 1	Semiconductor Fuses	550 A	1.3 kVAC	Fast-Acting Fuses	1 kVDC	100 kA, 150 kA	Blade / Bolt	Class aR Fuses	72	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 72 DIN 110MM 630A PSR072DL0630X Littelfuse 1: 420,48 € 9Factory Stock Available	Mfr. Part No. PSR072DL0630X Mouser Part No 576-PSR072DL0630X	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 72 DIN 110MM 630A Learn More about Littelfuse psr fuses	Datasheet	9Factory Stock Available More Info Available	420,48 € 383,47 € 371,11 € Quote Quote	Min.: 1 Mult.: 1	Semiconductor Fuses	630 A	1.3 kVAC	Fast-Acting Fuses	1 kVDC	100 kA, 150 kA	Blade / Bolt	Class aR Fuses	72	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 72 DIN 110MM 700A PSR072DL0700X Littelfuse 1: 537,28 € 26Factory Stock Available	Mfr. Part No. PSR072DL0700X Mouser Part No 576-PSR072DL0700X	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 72 DIN 110MM 700A	Datasheet	26Factory Stock Available More Info Available	537,28 € 457,31 € 409,94 €	Min.: 1 Mult.: 1	Semiconductor Fuses	700 A	1.3 kVAC	Fast-Acting Fuses	900 VDC	100 kA, 150 kA	Blade / Bolt	Class aR Fuses	72	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses 400A 1250V SIZE 72 Flush End Mtrc Thred PSR072FL0400Z Littelfuse 1: 419,34 € 39Factory Stock Available	Mfr. Part No. PSR072FL0400Z Mouser Part No 576-PSR072FL0400Z	Littelfuse	Industrial & Electrical Fuses 400A 1250V SIZE 72 Flush End Mtrc Thred Learn More about Littelfuse psr fuses	Datasheet	39Factory Stock Available More Info Available	419,34 € 340,00 € 320,10 €	Min.: 1 Mult.: 1	Semiconductor Fuses	400 A	1.3 kVAC	Fast-Acting Fuses	1 kVDC	100 kA, 150 kA	Threaded	Class aR Fuses	72	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses 550A 1250VAC SIZE 72 POWER-SPEED FLUSH M PSR072FL0550Z Littelfuse 2: 472,08 € 20Factory Stock Available	Mfr. Part No. PSR072FL0550Z Mouser Part No 576-PSR072FL0550Z	Littelfuse	Industrial & Electrical Fuses 550A 1250VAC SIZE 72 POWER-SPEED FLUSH M Learn More about Littelfuse psr fuses	Datasheet	20Factory Stock Available More Info Available	472,08 € 391,18 € 360,50 €	Min.: 2 Mult.: 2	Semiconductor Fuses	550 A	1.3 kVAC	Fast-Acting Fuses	1 kVDC		Quick Connect	Class aR Fuses	72	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses 500A 1250VAC SIZE 72 POWER-SPEED FLUSH I PSR072FS0500Z Littelfuse 2: 472,08 € 9Factory Stock Available	Mfr. Part No. PSR072FS0500Z Mouser Part No 576-PSR072FS0500Z	Littelfuse	Industrial & Electrical Fuses 500A 1250VAC SIZE 72 POWER-SPEED FLUSH I Learn More about Littelfuse psr fuses	Datasheet	9Factory Stock Available More Info Available	472,08 € 391,18 € 360,50 €	Min.: 2 Mult.: 2	Semiconductor Fuses	500 A	1.3 kVAC	Fast-Acting Fuses	1 kVDC		Quick Connect	Class aR Fuses	72	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 72 US LONG BL 315A PSR072UL0315X Littelfuse 1: 436,24 € 29Factory Stock Available	Mfr. Part No. PSR072UL0315X Mouser Part No 576-PSR072UL0315X	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 72 US LONG BL 315A Learn More about Littelfuse psr fuses	Datasheet	29Factory Stock Available More Info Available	436,24 € 341,02 € 317,54 € Quote Quote	Min.: 1 Mult.: 1	Semiconductor Fuses	315 A		Fast-Acting Fuses			Knife Blade	Class aR Fuses	72	Visual Indicator	Bulk	PSR