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 (SEK) 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	Body Style	Mounting Style	Termination Style	Class	Fuse Size/Group	Indicator Style	Packaging	Series
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 70 US LONG BL 200A PSR070UL0200Z Littelfuse 1: 3 468,04 kr 18In Stock	Mfr. Part No. PSR070UL0200Z Mouser Part No 576-PSR070UL0200Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 70 US LONG BL 200A Learn More about Littelfuse psr fuses	Datasheet	18In Stock	3 468,04 kr 3 055,39 kr 2 958,41 kr	Min.: 1 Mult.: 1	Semiconductor Fuses	200 A		Fast-Acting Fuses					Knife Blade	Class aR Fuses	70	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 72 DIN 110MM 500A PSR072DL0500X Littelfuse 1: 4 568,85 kr 5In Stock	Mfr. Part No. PSR072DL0500X Mouser Part No 576-PSR072DL0500X	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 72 DIN 110MM 500A Learn More about Littelfuse psr fuses	Datasheet	5In Stock	4 568,85 kr 3 857,85 kr 3 833,44 kr Quote Quote	Min.: 1 Mult.: 1	Semiconductor Fuses	500 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 32 US LONG BL 400A PSR032UL0400X Littelfuse 1: 3 601,58 kr 2In Stock	Mfr. Part No. PSR032UL0400X Mouser Part No 576-PSR032UL0400X	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB Size 32 US LONG BL 400A Learn More about Littelfuse psr fuses	Datasheet	2In Stock	3 601,58 kr 2 723,74 kr 2 605,84 kr 2 599,09 kr	Min.: 1 Mult.: 1	Semiconductor Fuses	400 A		Fast-Acting Fuses					Knife Blade	Class aR Fuses	32	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses 200A 1000V SIZE 70 Flush End Mtrc Thred PSR070FL0200Z Littelfuse 1: 3 954,04 kr 1In Stock	Mfr. Part No. PSR070FL0200Z Mouser Part No 576-PSR070FL0200Z	Littelfuse	Industrial & Electrical Fuses 200A 1000V SIZE 70 Flush End Mtrc Thred Learn More about Littelfuse psr fuses	Datasheet	1In Stock	3 954,04 kr 3 096,11 kr 2 947,05 kr Quote Quote	Min.: 1 Mult.: 1	Semiconductor Fuses	200 A	1.3 kVAC	Fast-Acting Fuses	1 kVDC	100 kA, 150 kA			Threaded	Class aR Fuses	70	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses 900V FAST BLOW 800A PSR073UL0800X Littelfuse 1: 6 053,18 kr 3In Stock 3Expected 2027-03-31	Mfr. Part No. PSR073UL0800X Mouser Part No 576-PSR073UL0800X	Littelfuse	Industrial & Electrical Fuses 900V FAST BLOW 800A	Datasheet	3In Stock 3Expected 2027-03-31	6 053,18 kr 4 970,36 kr 4 523,06 kr	Min.: 1 Mult.: 1	Semiconductor Fuses	800 A		Fast-Acting Fuses					Knife Blade	Class aR Fuses	73	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 70 DIN 110MM 50A PSR070DL0050Z Littelfuse 1: 3 740,29 kr 19In Stock	Mfr. Part No. PSR070DL0050Z Mouser Part No 576-PSR070DL0050Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 70 DIN 110MM 50A Learn More about Littelfuse psr fuses	Datasheet	19In Stock	3 740,29 kr 3 098,70 kr 2 855,81 kr	Min.: 1 Mult.: 1	Semiconductor Fuses	50 A	1.3 kVAC	Fast-Acting Fuses	1 kVDC	100 kA, 150 kA			Blade / Bolt	Class aR Fuses	70	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses 900V FAST BLOW 350A PSR070UL0350Z Littelfuse 1: 4 778,78 kr 10In Stock	Mfr. Part No. PSR070UL0350Z Mouser Part No 576-PSR070UL0350Z	Littelfuse	Industrial & Electrical Fuses 900V FAST BLOW 350A	Datasheet	10In Stock	4 778,78 kr 3 923,89 kr 3 570,86 kr	Min.: 1 Mult.: 1	Semiconductor Fuses	350 A		Fast-Acting Fuses					Knife Blade	Class aR Fuses	70	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses 1000V SIZE 70 LONG BL 100A PSR070UL0100Z Littelfuse 1: 3 846,38 kr 1In Stock	Mfr. Part No. PSR070UL0100Z Mouser Part No 576-PSR070UL0100Z	Littelfuse	Industrial & Electrical Fuses 1000V SIZE 70 LONG BL 100A Learn More about Littelfuse psr fuses	Datasheet	1In Stock	3 846,38 kr 3 226,95 kr 2 973,60 kr	Min.: 1 Mult.: 1	Semiconductor Fuses	100 A		Fast-Acting Fuses					Knife Blade	Class aR Fuses	70	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses 125A 700VAC SIZE 30 POWER-SPEED FLUSH M PSR030FL0125Z Littelfuse 1: 2 187,68 kr 9In Stock	Mfr. Part No. PSR030FL0125Z Mouser Part No 576-PSR030FL0125Z	Littelfuse	Industrial & Electrical Fuses 125A 700VAC SIZE 30 POWER-SPEED FLUSH M Learn More about Littelfuse psr fuses	Datasheet	9In Stock	2 187,68 kr 1 705,84 kr 1 664,44 kr 1 584,56 kr	Min.: 1 Mult.: 1	Semiconductor Fuses	125 A	700 VAC	Fast-Acting Fuses	600 VDC				Quick Connect	Class aR Fuses	30	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses 200A 700VAC SIZE 30 POWER-SPEED FLUSH M PSR030FL0200Z Littelfuse 1: 2 432,93 kr 3In Stock	Mfr. Part No. PSR030FL0200Z Mouser Part No 576-PSR030FL0200Z	Littelfuse	Industrial & Electrical Fuses 200A 700VAC SIZE 30 POWER-SPEED FLUSH M Learn More about Littelfuse psr fuses	Datasheet	3In Stock	2 432,93 kr 1 889,78 kr 1 796,96 kr 1 574,66 kr	Min.: 1 Mult.: 1	Semiconductor Fuses	200 A	700 VAC	Fast-Acting Fuses	600 VDC				Quick Connect	Class aR Fuses	30	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses 80A 1000V SIZE 70 Flush End Mtrc Thred PSR070FL0080Z Littelfuse 1: 3 676,84 kr 1In Stock	Mfr. Part No. PSR070FL0080Z Mouser Part No 576-PSR070FL0080Z	Littelfuse	Industrial & Electrical Fuses 80A 1000V SIZE 70 Flush End Mtrc Thred Learn More about Littelfuse psr fuses	Datasheet	1In Stock	3 676,84 kr 3 058,99 kr 2 880,34 kr Quote Quote	Min.: 1 Mult.: 1	Semiconductor Fuses	80 A	1.3 kVAC	Fast-Acting Fuses	1 kVDC	100 kA, 150 kA			Threaded	Class aR Fuses	70	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses 250A 1000V SIZE 70 Flush End Mtrc Thred PSR070FL0250Z Littelfuse 1: 4 056,86 kr 1In Stock	Mfr. Part No. PSR070FL0250Z Mouser Part No 576-PSR070FL0250Z	Littelfuse	Industrial & Electrical Fuses 250A 1000V SIZE 70 Flush End Mtrc Thred Learn More about Littelfuse psr fuses	Datasheet	1In Stock	4 056,86 kr 3 394,01 kr 3 195,68 kr	Min.: 1 Mult.: 1	Semiconductor Fuses	250 A	1.3 kVAC	Fast-Acting Fuses	1 kVDC	100 kA, 150 kA			Threaded	Class aR Fuses	70	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses 200A 1000V SIZE 70 Flush End In Thread PSR070FS0200Z Littelfuse 1: 3 953,93 kr 1In Stock	Mfr. Part No. PSR070FS0200Z Mouser Part No 576-PSR070FS0200Z	Littelfuse	Industrial & Electrical Fuses 200A 1000V SIZE 70 Flush End In Thread Learn More about Littelfuse psr fuses	Datasheet	1In Stock	3 953,93 kr 3 275,89 kr 3 018,94 kr	Min.: 1 Mult.: 1	Semiconductor Fuses	200 A	1.3 kVAC	Fast-Acting Fuses	1 kVDC	100 kA, 150 kA			Threaded	Class aR Fuses	70	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 70 US LONG BL 50A PSR070UL0050Z Littelfuse 1: 3 746,25 kr 1In Stock	Mfr. Part No. PSR070UL0050Z Mouser Part No 576-PSR070UL0050Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 70 US LONG BL 50A Learn More about Littelfuse psr fuses	Datasheet	1In Stock	3 746,25 kr 3 044,25 kr 2 805,19 kr Quote Quote	Min.: 1 Mult.: 1	Semiconductor Fuses	50 A		Fast-Acting Fuses					Knife Blade	Class aR Fuses	70	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses 400A 1250VAC SIZE 71 POWER-SPEED FLUSH M PSR071FL0400Z Littelfuse 1: 3 953,93 kr 3In Stock	Mfr. Part No. PSR071FL0400Z Mouser Part No 576-PSR071FL0400Z	Littelfuse	Industrial & Electrical Fuses 400A 1250VAC SIZE 71 POWER-SPEED FLUSH M Learn More about Littelfuse psr fuses	Datasheet	3In Stock	3 953,93 kr 3 275,89 kr 3 018,94 kr	Min.: 1 Mult.: 1	Semiconductor Fuses	400 A	1.3 kVAC	Fast-Acting Fuses	1 kVDC				Quick Connect	Class aR Fuses	71	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses 700A 1250V SIZE 73 Flush End Mtrc Thred PSR073FL0700Z Littelfuse 1: 5 166,79 kr 1In Stock	Mfr. Part No. PSR073FL0700Z Mouser Part No 576-PSR073FL0700Z	Littelfuse	Industrial & Electrical Fuses 700A 1250V SIZE 73 Flush End Mtrc Thred Learn More about Littelfuse psr fuses	Datasheet	1In Stock	5 166,79 kr 4 235,29 kr 3 953,93 kr Quote Quote	Min.: 1 Mult.: 1	Semiconductor Fuses	700 A	1.3 kVAC	Fast-Acting Fuses	1 kVDC	100 kA, 150 kA			Threaded	Class aR Fuses	73	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses 700A 700V SIZE 31 Flush End Mtrc Thred PSR031FL0700Z Littelfuse 1: 3 558,04 kr 1In Stock	Mfr. Part No. PSR031FL0700Z Mouser Part No 576-PSR031FL0700Z	Littelfuse	Industrial & Electrical Fuses 700A 700V SIZE 31 Flush End Mtrc Thred Learn More about Littelfuse psr fuses	Datasheet	1In Stock	3 558,04 kr 2 782,24 kr 2 651,18 kr 2 645,78 kr	Min.: 1 Mult.: 1	Semiconductor Fuses	700 A	700 VAC	Fast-Acting Fuses	600 VDC				Quick Connect	Class aR Fuses	31	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses 200A 1000V SIZE 70 Flush End Mtrc Thred PSR070FL0200ZDN Littelfuse 1: 2 214,45 kr 12Expected 2027-02-04 New Product	Mfr. Part No. PSR070FL0200ZDN Mouser Part No 576-PSR070FL0200ZDN New Product	Littelfuse	Industrial & Electrical Fuses 200A 1000V SIZE 70 Flush End Mtrc Thred	Datasheet	12Expected 2027-02-04	2 214,45 kr 1 835,66 kr 1 692,34 kr 1 398,38 kr	Min.: 1 Mult.: 1	Semiconductor Fuses	200 A	1.3 kVAC	Fast-Acting Fuses	1 kVDC	100 kA, 150 kA	Square Body Fuses	Screw	Threaded	Class aR Fuses	70	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses 250A 1000V SIZE 70 Flush End Mtrc Thred PSR070FL0250ZDN Littelfuse 1: 2 229,53 kr 12Expected 2027-02-04 New Product	Mfr. Part No. PSR070FL0250ZDN Mouser Part No 576-PSR070FL0250ZDN New Product	Littelfuse	Industrial & Electrical Fuses 250A 1000V SIZE 70 Flush End Mtrc Thred	Datasheet	12Expected 2027-02-04	2 229,53 kr 1 848,26 kr 1 703,93 kr 1 408,05 kr	Min.: 1 Mult.: 1	Semiconductor Fuses	250 A	1.3 kVAC	Fast-Acting Fuses	1 kVDC	100 kA, 150 kA	Square Body Fuses	Screw	Threaded	Class aR Fuses	70	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses 900V FAST BLOW 700A PSR073UL0700X Littelfuse 1: 5 136,98 kr 11On Order	Mfr. Part No. PSR073UL0700X Mouser Part No 576-PSR073UL0700X	Littelfuse	Industrial & Electrical Fuses 900V FAST BLOW 700A Learn More about Littelfuse psr fuses	Datasheet	11On Order On Order Ship Dates Mfr. No: PSR073UL0700X Stock: 0 On Order: 4 Expected 2027-02-11 7 Expected 2027-03-30 Factory Lead Time: 15 Weeks	5 136,98 kr 4 729,95 kr 4 698,56 kr	Min.: 1 Mult.: 1	Semiconductor Fuses	700 A		Fast-Acting Fuses					Knife Blade	Class aR Fuses	73	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses 350A 700VAC SIZE 30 POWER-SPEED FLUSH M PSR030FL0350Z Littelfuse 1: 2 605,39 kr 3Expected 2026-12-21	Mfr. Part No. PSR030FL0350Z Mouser Part No 576-PSR030FL0350Z	Littelfuse	Industrial & Electrical Fuses 350A 700VAC SIZE 30 POWER-SPEED FLUSH M Learn More about Littelfuse psr fuses	Datasheet	3Expected 2026-12-21	2 605,39 kr 2 159,78 kr 1 991,25 kr 1 645,43 kr	Min.: 1 Mult.: 1	Semiconductor Fuses	350 A	700 VAC	Fast-Acting Fuses	600 VDC				Quick Connect	Class aR Fuses	30	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses 350A 700V SIZE 31 Flush End Mtrc Thred PSR031FL0350Z Littelfuse 1: 2 988,56 kr 1Expected 2027-04-01	Mfr. Part No. PSR031FL0350Z Mouser Part No 576-PSR031FL0350Z	Littelfuse	Industrial & Electrical Fuses 350A 700V SIZE 31 Flush End Mtrc Thred Learn More about Littelfuse psr fuses	Datasheet	1Expected 2027-04-01	2 988,56 kr 2 424,49 kr 2 306,48 kr	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
Industrial & Electrical Fuses 315A 1250VAC SIZE 71 POWER-SPEED FLUSH M PSR071FL0315Z Littelfuse 1: 3 953,93 kr 66Factory Stock Available	Mfr. Part No. PSR071FL0315Z Mouser Part No 576-PSR071FL0315Z	Littelfuse	Industrial & Electrical Fuses 315A 1250VAC SIZE 71 POWER-SPEED FLUSH M Learn More about Littelfuse psr fuses	Datasheet	66Factory Stock Available More Info Available	3 953,93 kr 3 275,89 kr 3 018,94 kr	Min.: 1 Mult.: 1	Semiconductor Fuses	315 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 73 US LONG BL 315A PSR073UL0315X Littelfuse 1: 4 626,45 kr 8Factory Stock Available	Mfr. Part No. PSR073UL0315X Mouser Part No 576-PSR073UL0315X	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 73 US LONG BL 315A Learn More about Littelfuse psr fuses	Datasheet	8Factory Stock Available More Info Available	4 626,45 kr 4 160,59 kr 4 008,26 kr Quote Quote	Min.: 1 Mult.: 1	Semiconductor Fuses	315 A		Fast-Acting Fuses					Knife Blade	Class aR Fuses	73	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 DIN 110MM 200A PSR030DL0200Z Littelfuse 1: 2 773,69 kr 9Factory Stock Available	Mfr. Part No. PSR030DL0200Z Mouser Part No 576-PSR030DL0200Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 DIN 110MM 200A Learn More about Littelfuse psr fuses	Datasheet	9Factory Stock Available More Info Available	2 773,69 kr 2 250,68 kr 2 074,28 kr 1 746,45 kr	Min.: 1 Mult.: 1	Semiconductor Fuses	200 A	700 VAC	Fast-Acting Fuses	600 VDC	150 kA, 200 kA			Blade / Bolt	Class aR Fuses	30	Visual Side Indicator	Bulk	PSR