Industrial & Electrical Fuses – Mouser United Kingdom

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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 (GBP) 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 30 US LONG BL 630A PSR030UL0630Z Littelfuse 1: £252.02 Non-Stocked Lead-Time 18 Weeks	Mfr. Part No. PSR030UL0630Z Mouser Part No 576-PSR030UL0630Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US LONG BL 630A	Datasheet	Non-Stocked Lead-Time 18 Weeks	£252.02 £204.42 £177.80 £177.30	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 30 US SHRT BL 40A PSR030US0040Z Littelfuse 1: £166.61 Non-Stocked Lead-Time 18 Weeks	Mfr. Part No. PSR030US0040Z Mouser Part No 576-PSR030US0040Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 40A Learn More about Littelfuse psr fuses	Datasheet	Non-Stocked Lead-Time 18 Weeks	£166.61 £156.12 £150.16 £141.37	Min.: 1 Mult.: 1	Semiconductor Fuses	40 A		Fast-Acting Fuses			Knife Blade	Class aR Fuses	30	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 50A PSR030US0050Z Littelfuse 1: £198.83 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. PSR030US0050Z Mouser Part No 576-PSR030US0050Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 50A Learn More about Littelfuse psr fuses	Datasheet	Non-Stocked Lead-Time 15 Weeks	£198.83 £152.76 £143.00 £129.51	Min.: 1 Mult.: 1	Semiconductor Fuses	50 A		Fast-Acting Fuses			Knife Blade	Class aR Fuses	30	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 63A PSR030US0063Z Littelfuse 1: £198.83 Non-Stocked Lead-Time 18 Weeks	Mfr. Part No. PSR030US0063Z Mouser Part No 576-PSR030US0063Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 63A Learn More about Littelfuse psr fuses	Datasheet	Non-Stocked Lead-Time 18 Weeks	£198.83 £161.30 £143.00 £129.51	Min.: 1 Mult.: 1	Semiconductor Fuses	63 A		Fast-Acting Fuses			Knife Blade	Class aR Fuses	30	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 80A PSR030US0080Z Littelfuse 1: £198.83 Non-Stocked Lead-Time 18 Weeks	Mfr. Part No. PSR030US0080Z Mouser Part No 576-PSR030US0080Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 80A Learn More about Littelfuse psr fuses	Datasheet	Non-Stocked Lead-Time 18 Weeks	£198.83 £152.82 £142.86 £129.51	Min.: 1 Mult.: 1	Semiconductor Fuses	80 A		Fast-Acting Fuses			Knife Blade	Class aR Fuses	30	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 100A PSR030US0100Z Littelfuse 1: £173.00 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. PSR030US0100Z Mouser Part No 576-PSR030US0100Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 100A Learn More about Littelfuse psr fuses	Datasheet	Non-Stocked Lead-Time 15 Weeks	£173.00 £160.36 £154.30 £146.25	Min.: 1 Mult.: 1	Semiconductor Fuses	100 A		Fast-Acting Fuses			Knife Blade	Class aR Fuses	30	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 125A PSR030US0125Z Littelfuse 1: £206.61 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. PSR030US0125Z Mouser Part No 576-PSR030US0125Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 125A Learn More about Littelfuse psr fuses	Datasheet	Non-Stocked Lead-Time 15 Weeks	£206.61 £167.62 £154.50 £135.14	Min.: 1 Mult.: 1	Semiconductor Fuses	125 A		Fast-Acting Fuses			Knife Blade	Class aR Fuses	30	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 160A PSR030US0160Z Littelfuse 1: £185.30 Non-Stocked Lead-Time 18 Weeks	Mfr. Part No. PSR030US0160Z Mouser Part No 576-PSR030US0160Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 160A Learn More about Littelfuse psr fuses	Datasheet	Non-Stocked Lead-Time 18 Weeks	£185.30 £156.71 £146.86 £135.14	Min.: 1 Mult.: 1	Semiconductor Fuses	160 A		Fast-Acting Fuses			Knife Blade	Class aR Fuses	30	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 200A PSR030US0200Z Littelfuse 1: £172.43 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. PSR030US0200Z Mouser Part No 576-PSR030US0200Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 200A Learn More about Littelfuse psr fuses	Datasheet	Non-Stocked Lead-Time 15 Weeks	£172.43 £160.86 £155.33 £147.97	Min.: 1 Mult.: 1	Semiconductor Fuses	200 A		Fast-Acting Fuses			Knife Blade	Class aR Fuses	30	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 250A PSR030US0250Z Littelfuse 1: £172.43 Non-Stocked Lead-Time 18 Weeks	Mfr. Part No. PSR030US0250Z Mouser Part No 576-PSR030US0250Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 250A Learn More about Littelfuse psr fuses	Datasheet	Non-Stocked Lead-Time 18 Weeks	£172.43 £160.86 £155.33 £147.97	Min.: 1 Mult.: 1	Semiconductor Fuses	250 A		Fast-Acting Fuses			Knife Blade	Class aR Fuses	30	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 315A PSR030US0315Z Littelfuse 1: £185.30 Non-Stocked Lead-Time 18 Weeks	Mfr. Part No. PSR030US0315Z Mouser Part No 576-PSR030US0315Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 315A Learn More about Littelfuse psr fuses	Datasheet	Non-Stocked Lead-Time 18 Weeks	£185.30 £156.71 £146.86 £135.14	Min.: 1 Mult.: 1	Semiconductor Fuses	315 A		Fast-Acting Fuses			Knife Blade	Class aR Fuses	30	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 350A PSR030US0350Z Littelfuse 1: £186.14 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. PSR030US0350Z Mouser Part No 576-PSR030US0350Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 350A Learn More about Littelfuse psr fuses	Datasheet	Non-Stocked Lead-Time 15 Weeks	£186.14 £173.62 £167.63 £159.66	Min.: 1 Mult.: 1	Semiconductor Fuses	350 A		Fast-Acting Fuses			Knife Blade	Class aR Fuses	30	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 400A PSR030US0400Z Littelfuse 1: £200.15 Non-Stocked Lead-Time 18 Weeks	Mfr. Part No. PSR030US0400Z Mouser Part No 576-PSR030US0400Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 400A Learn More about Littelfuse psr fuses	Datasheet	Non-Stocked Lead-Time 18 Weeks	£200.15 £169.28 £158.52 £146.40	Min.: 1 Mult.: 1	Semiconductor Fuses	400 A		Fast-Acting Fuses			Knife Blade	Class aR Fuses	30	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 450A PSR030US0450Z Littelfuse 1: £200.15 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. PSR030US0450Z Mouser Part No 576-PSR030US0450Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 450A Learn More about Littelfuse psr fuses	Datasheet	Non-Stocked Lead-Time 15 Weeks	£200.15 £169.28 £158.52 £146.40	Min.: 1 Mult.: 1	Semiconductor Fuses	450 A		Fast-Acting Fuses			Knife Blade	Class aR Fuses	30	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses 700V SIZE 30 FLUSH 500A PSR030US0500Z Littelfuse 1: £222.28 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. PSR030US0500Z Mouser Part No 576-PSR030US0500Z	Littelfuse	Industrial & Electrical Fuses 700V SIZE 30 FLUSH 500A Learn More about Littelfuse psr fuses	Datasheet	Non-Stocked Lead-Time 15 Weeks	£222.28 £175.89 £166.18 £153.79	Min.: 1 Mult.: 1	Semiconductor Fuses	500 A		Fast-Acting Fuses			Knife Blade	Class aR Fuses	30	Visual Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 550A PSR030US0550Z Littelfuse 1: £237.78 Non-Stocked Lead-Time 18 Weeks	Mfr. Part No. PSR030US0550Z Mouser Part No 576-PSR030US0550Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHRT BL 550A Learn More about Littelfuse psr fuses	Datasheet	Non-Stocked Lead-Time 18 Weeks	£237.78 £192.87 £170.14 £161.56	Min.: 1 Mult.: 1	Semiconductor Fuses	550 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: £237.78 Non-Stocked Lead-Time 18 Weeks	Mfr. Part No. PSR030US0630Z Mouser Part No 576-PSR030US0630Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHORT BL 630A	Datasheet	Non-Stocked Lead-Time 18 Weeks	£237.78 £192.87 £170.23 £160.84	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 DIN 110MM 200A PSR031DL0200Z Littelfuse 1: £199.24 Non-Stocked Lead-Time 18 Weeks	Mfr. Part No. PSR031DL0200Z Mouser Part No 576-PSR031DL0200Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 DIN 110MM 200A Learn More about Littelfuse psr fuses	Datasheet	Non-Stocked Lead-Time 18 Weeks	£199.24 £186.35 £179.89 £171.31	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
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 DIN 110MM 250A PSR031DL0250Z Littelfuse 1: £237.78 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. PSR031DL0250Z Mouser Part No 576-PSR031DL0250Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 DIN 110MM 250A Learn More about Littelfuse psr fuses	Datasheet	Non-Stocked Lead-Time 15 Weeks	£237.78 £182.77 £170.23 £160.84	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
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 DIN 110MM 315A PSR031DL0315Z Littelfuse 1: £237.78 Non-Stocked Lead-Time 18 Weeks	Mfr. Part No. PSR031DL0315Z Mouser Part No 576-PSR031DL0315Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 DIN 110MM 315A Learn More about Littelfuse psr fuses	Datasheet	Non-Stocked Lead-Time 18 Weeks	£237.78 £192.87 £170.14 £161.56	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
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 DIN 110MM 350A PSR031DL0350Z Littelfuse 1: £199.24 Non-Stocked Lead-Time 18 Weeks	Mfr. Part No. PSR031DL0350Z Mouser Part No 576-PSR031DL0350Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 DIN 110MM 350A Learn More about Littelfuse psr fuses	Datasheet	Non-Stocked Lead-Time 18 Weeks	£199.24 £186.35 £179.89 £171.31	Min.: 1 Mult.: 1	Semiconductor Fuses	350 A	700 VAC	Fast-Acting Fuses	600 VDC	150 kA, 200 kA	Blade / Bolt	Class aR Fuses	31	Visual Side Indicator	Bulk	PSR
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 DIN 110MM 400A PSR031DL0400Z Littelfuse 1: £199.24 Non-Stocked Lead-Time 18 Weeks	Mfr. Part No. PSR031DL0400Z Mouser Part No 576-PSR031DL0400Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 DIN 110MM 400A Learn More about Littelfuse psr fuses	Datasheet	Non-Stocked Lead-Time 18 Weeks	£199.24 £185.86 £178.81 £169.42	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
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 DIN 110MM 450A PSR031DL0450Z Littelfuse 1: £253.18 Non-Stocked Lead-Time 18 Weeks	Mfr. Part No. PSR031DL0450Z Mouser Part No 576-PSR031DL0450Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 DIN 110MM 450A Learn More about Littelfuse psr fuses	Datasheet	Non-Stocked Lead-Time 18 Weeks	£253.18 £194.52 £182.13 £181.61	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
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 DIN 110MM 500A PSR031DL0500Z Littelfuse 1: £212.14 Non-Stocked Lead-Time 18 Weeks	Mfr. Part No. PSR031DL0500Z Mouser Part No 576-PSR031DL0500Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 DIN 110MM 500A Learn More about Littelfuse psr fuses	Datasheet	Non-Stocked Lead-Time 18 Weeks	£212.14 £198.84 £191.27 £190.75	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
Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 DIN 110MM 550A PSR031DL0550Z Littelfuse 1: £212.11 Non-Stocked Lead-Time 18 Weeks	Mfr. Part No. PSR031DL0550Z Mouser Part No 576-PSR031DL0550Z	Littelfuse	Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 DIN 110MM 550A Learn More about Littelfuse psr fuses	Datasheet	Non-Stocked Lead-Time 18 Weeks	£212.11 £199.29 £192.37 £191.89	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

PSR High-Speed Square Body Fuses

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