Industrial & Electrical Fuses – Mouser Liechtenstein

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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 (CHF) 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: CHF 288.54 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	CHF 288.54 CHF 254.21 CHF 246.14	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: CHF 380.13 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	CHF 380.13 CHF 320.97 CHF 318.94 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 200A 1000V SIZE 70 Flush End Mtrc Thred PSR070FL0200Z Littelfuse 1: CHF 328.98 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	CHF 328.98 CHF 257.60 CHF 245.19 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 POWR-SPEED SQB Size 32 US LONG BL 400A PSR032UL0400X Littelfuse 1: CHF 299.65 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	CHF 299.65 CHF 226.61 CHF 216.81 CHF 216.24	Min.: 1 Mult.: 1	Semiconductor Fuses	400 A		Fast-Acting Fuses					Knife Blade	Class aR Fuses	32	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses 900V FAST BLOW 800A PSR073UL0800X Littelfuse 1: CHF 503.62 3In Stock 3Expected 3/31/2027	Mfr. Part No. PSR073UL0800X Mouser Part No 576-PSR073UL0800X	Littelfuse	Industrial & Electrical Fuses 900V FAST BLOW 800A	Datasheet	3In Stock 3Expected 3/31/2027	CHF 503.62 CHF 413.53 CHF 376.32	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: CHF 311.19 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	CHF 311.19 CHF 257.81 CHF 237.60	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: CHF 397.59 10In Stock	Mfr. Part No. PSR070UL0350Z Mouser Part No 576-PSR070UL0350Z	Littelfuse	Industrial & Electrical Fuses 900V FAST BLOW 350A	Datasheet	10In Stock	CHF 397.59 CHF 326.47 CHF 297.10	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: CHF 320.02 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	CHF 320.02 CHF 268.48 CHF 247.40	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: CHF 182.01 1In 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	1In Stock	CHF 182.01 CHF 141.93 CHF 138.48 CHF 131.84	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: CHF 202.42 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	CHF 202.42 CHF 157.23 CHF 149.51 CHF 131.01	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: CHF 305.91 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	CHF 305.91 CHF 254.51 CHF 239.64 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: CHF 337.53 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	CHF 337.53 CHF 282.38 CHF 265.88	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: CHF 328.97 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	CHF 328.97 CHF 272.55 CHF 251.18	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: CHF 311.69 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	CHF 311.69 CHF 253.28 CHF 233.39 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: CHF 328.97 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	CHF 328.97 CHF 272.55 CHF 251.18	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: CHF 429.88 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	CHF 429.88 CHF 352.38 CHF 328.97 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: CHF 296.03 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	CHF 296.03 CHF 231.48 CHF 220.58 CHF 220.13	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: CHF 184.24 12Expected 2/4/2027 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 2/4/2027	CHF 184.24 CHF 152.73 CHF 140.80 CHF 116.34	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: CHF 185.50 12Expected 2/4/2027 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 2/4/2027	CHF 185.50 CHF 153.78 CHF 141.77 CHF 117.15	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: CHF 427.40 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 2/11/2027 7 Expected 3/30/2027 Factory Lead Time: 15 Weeks	CHF 427.40 CHF 393.53 CHF 390.92	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: CHF 216.77 3Expected 12/21/2026	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 12/21/2026	CHF 216.77 CHF 179.69 CHF 165.67 CHF 136.90	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: CHF 248.65 1Expected 4/1/2027	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 4/1/2027	CHF 248.65 CHF 201.72 CHF 191.90	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 POWR-SPEED SQB SIZE 30 US LONG BL 630A PSR030UL0630Z Littelfuse 1: CHF 263.16 3Factory Stock Available	Mfr. Part No. PSR030UL0630Z Mouser Part No 576-PSR030UL0630Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US LONG BL 630A	Datasheet	3Factory Stock Available More Info Available	CHF 263.16 CHF 213.46 CHF 196.75	Min.: 1 Mult.: 1	Semiconductor Fuses	630 A		Fast-Acting Fuses					Knife Blade	Class aR Fuses	30	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHORT BL 630A PSR030US0630Z Littelfuse 1: CHF 263.71 3Factory Stock Available	Mfr. Part No. PSR030US0630Z Mouser Part No 576-PSR030US0630Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHORT BL 630A	Datasheet	3Factory Stock Available More Info Available	CHF 263.71 CHF 213.94 CHF 185.37 CHF 175.30	Min.: 1 Mult.: 1	Semiconductor Fuses	630 A		Fast-Acting Fuses					Knife Blade	Class aR Fuses	30	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 US LONG BL 400A PSR031UL0400Z Littelfuse 1: CHF 228.92 3Factory Stock Available	Mfr. Part No. PSR031UL0400Z Mouser Part No 576-PSR031UL0400Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 US LONG BL 400A Learn More about Littelfuse psr fuses	Datasheet	3Factory Stock Available More Info Available	CHF 228.92 CHF 194.33 CHF 180.90 CHF 170.83	Min.: 1 Mult.: 1	Semiconductor Fuses	400 A		Fast-Acting Fuses					Knife Blade	Class aR Fuses	31	Visual Indicator	Bulk	PSR