Industrial & Electrical Fuses

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PSX Powr-Speed® High-Speed Square Body Fuses

Littelfuse PSX Powr-Speed^® High-Speed Square Body Fuses are extremely fast-acting, offering high-speed performance up to 1500V_DC, ranging from 80A to 1400A in small NH XL package sizes. The PSX series is available with multiple mounting terminations, including bolted-blade, DIN-blade, and metric flush-end styles. Visual blown fuse indication is standard on all fuses, and an optional micro-switch is available for external indication. These fuses are certified to UL248-13 and designed to meet EN high-speed semiconductor fuse standards and future battery protection fuse standards. Littelfuse PSX Powr-Speed High-Speed Square Body Fuses are specially designed to protect battery energy storage systems (BESS) and photovoltaic inverters. These fuses are also ideal for DC applications, including DC common bus systems, larger industrial regenerative drives, rectifiers, and metal processing 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	Fuse Type	Voltage Rating DC	Interrupt Rating	Termination Style	Indicator Style	Packaging	Series
Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 350A PSX1XLUB0350X Littelfuse 1: €538.06 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. PSX1XLUB0350X Mouser Part No 576-PSX1XLUB0350X	Littelfuse	Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 350A Learn More about Littelfuse psx square body fuses	Datasheet	Non-Stocked Lead-Time 15 Weeks	€538.06 €441.81 €402.05	Min.: 1 Mult.: 1	Semiconductor Fuses	350 A	Fast-Acting Fuses	1.5 kVDC	200 kA	Blade	Visual Indicator	Bulk	PSX
Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 450A PSX1XLUB0450X Littelfuse 12: €422.57 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. PSX1XLUB0450X Mouser Part No 576-PSX1XLUB0450X	Littelfuse	Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 450A Learn More about Littelfuse psx square body fuses	Datasheet	Non-Stocked Lead-Time 15 Weeks	€422.57 Quote Quote	Min.: 12 Mult.: 1	Semiconductor Fuses	450 A	Fast-Acting Fuses	1.5 kVDC	200 kA	Blade	Visual Indicator	Bulk	PSX
Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 500A PSX1XLUB0500X Littelfuse 12: €444.69 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. PSX1XLUB0500X Mouser Part No 576-PSX1XLUB0500X	Littelfuse	Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 500A Learn More about Littelfuse psx square body fuses	Datasheet	Non-Stocked Lead-Time 15 Weeks	€444.69	Min.: 12 Mult.: 1	Semiconductor Fuses	500 A	Fast-Acting Fuses	1.5 kVDC	200 kA	Blade	Visual Indicator	Bulk	PSX
Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 550A PSX1XLUB0550X Littelfuse 12: €462.54 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. PSX1XLUB0550X Mouser Part No 576-PSX1XLUB0550X	Littelfuse	Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 550A Learn More about Littelfuse psx square body fuses	Datasheet	Non-Stocked Lead-Time 15 Weeks	€462.54 Quote Quote	Min.: 12 Mult.: 1	Semiconductor Fuses	550 A	Fast-Acting Fuses	1.5 kVDC	200 kA	Blade	Visual Indicator	Bulk	PSX
Industrial & Electrical Fuses SQB SIZE 3XL DIN BL 700A PSX3XLDB0700X Littelfuse 1: €691.47 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. PSX3XLDB0700X Mouser Part No 576-PSX3XLDB0700X	Littelfuse	Industrial & Electrical Fuses SQB SIZE 3XL DIN BL 700A Learn More about Littelfuse psx square body fuses	Datasheet	Non-Stocked Lead-Time 15 Weeks	€691.47 €604.58 €533.51	Min.: 1 Mult.: 1	Semiconductor Fuses	700 A	Fast-Acting Fuses	1.5 kVDC	200 kA	Blade	Visual Indicator	Bulk	PSX
Industrial & Electrical Fuses SQB SIZE 3XL DIN BL 800A PSX3XLDB0800X Littelfuse 7: €635.58 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. PSX3XLDB0800X Mouser Part No 576-PSX3XLDB0800X	Littelfuse	Industrial & Electrical Fuses SQB SIZE 3XL DIN BL 800A Learn More about Littelfuse psx square body fuses	Datasheet	Non-Stocked Lead-Time 15 Weeks	€635.58 €560.87	Min.: 7 Mult.: 1	Semiconductor Fuses	800 A	Fast-Acting Fuses	1.5 kVDC	200 kA	Blade	Visual Indicator	Bulk	PSX
Industrial & Electrical Fuses SQB SIZE 3XL DIN BL 900A PSX3XLDB0900X Littelfuse 7: €697.59 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. PSX3XLDB0900X Mouser Part No 576-PSX3XLDB0900X	Littelfuse	Industrial & Electrical Fuses SQB SIZE 3XL DIN BL 900A Learn More about Littelfuse psx square body fuses	Datasheet	Non-Stocked Lead-Time 15 Weeks	€697.59 €615.59	Min.: 7 Mult.: 1	Semiconductor Fuses	900 A	Fast-Acting Fuses	1.5 kVDC	200 kA	Blade	Visual Indicator	Bulk	PSX
Industrial & Electrical Fuses SQB SIZE 3XL DIN BL 1100A PSX3XLDB1100X Littelfuse 7: €806.10 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. PSX3XLDB1100X Mouser Part No 576-PSX3XLDB1100X	Littelfuse	Industrial & Electrical Fuses SQB SIZE 3XL DIN BL 1100A Learn More about Littelfuse psx square body fuses	Datasheet	Non-Stocked Lead-Time 15 Weeks	€806.10 €711.34	Min.: 7 Mult.: 1	Semiconductor Fuses	1.1 kA	Fast-Acting Fuses	1.5 kVDC	200 kA	Blade	Visual Indicator	Bulk	PSX
Industrial & Electrical Fuses SQB SIZE 3XL DIN BL 1400A Littelfuse PSX3XLDB1400X PSX3XLDB1400X Littelfuse 1: €991.74 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. PSX3XLDB1400X Mouser Part No 576-PSX3XLDB1400X	Littelfuse	Industrial & Electrical Fuses SQB SIZE 3XL DIN BL 1400A Learn More about Littelfuse psx square body fuses	Datasheet	Non-Stocked Lead-Time 15 Weeks	€991.74 €899.12 €793.42	Min.: 1 Mult.: 1	Semiconductor Fuses	1.4 kA	Fast-Acting Fuses	1.5 kVDC	200 kA	Blade	Visual Indicator	Bulk	PSX
Industrial & Electrical Fuses SQB SIZE 3XL FLUSH 700A PSX3XLFL0700X Littelfuse 7: €604.58 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. PSX3XLFL0700X Mouser Part No 576-PSX3XLFL0700X	Littelfuse	Industrial & Electrical Fuses SQB SIZE 3XL FLUSH 700A Learn More about Littelfuse psx square body fuses	Datasheet	Non-Stocked Lead-Time 15 Weeks	€604.58 €533.51	Min.: 7 Mult.: 1	Semiconductor Fuses	700 A	Fast-Acting Fuses	1.5 kVDC	200 kA	Threaded	Visual Indicator	Bulk	PSX
Industrial & Electrical Fuses SQB SIZE 3XL FLUSH 1100A PSX3XLFL1100X Littelfuse 7: €806.10 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. PSX3XLFL1100X Mouser Part No 576-PSX3XLFL1100X	Littelfuse	Industrial & Electrical Fuses SQB SIZE 3XL FLUSH 1100A Learn More about Littelfuse psx square body fuses	Datasheet	Non-Stocked Lead-Time 15 Weeks	€806.10 €711.34	Min.: 7 Mult.: 1	Semiconductor Fuses	1.1 kA	Fast-Acting Fuses	1.5 kVDC	200 kA	Threaded	Visual Indicator	Bulk	PSX
Industrial & Electrical Fuses SQB SIZE 3XL BOLTED BL 700A Littelfuse PSX3XLUB0700X PSX3XLUB0700X Littelfuse 1: €691.47 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. PSX3XLUB0700X Mouser Part No 576-PSX3XLUB0700X	Littelfuse	Industrial & Electrical Fuses SQB SIZE 3XL BOLTED BL 700A Learn More about Littelfuse psx square body fuses	Datasheet	Non-Stocked Lead-Time 15 Weeks	€691.47 €604.58 €533.51	Min.: 1 Mult.: 1	Semiconductor Fuses	700 A	Fast-Acting Fuses	1.5 kVDC	200 kA	Blade	Visual Indicator	Bulk	PSX
Industrial & Electrical Fuses SQB SIZE 3XL BOLTED BL 1250A PSX3XLUB1250X Littelfuse 1: €956.93 Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. PSX3XLUB1250X Mouser Part No 576-PSX3XLUB1250X	Littelfuse	Industrial & Electrical Fuses SQB SIZE 3XL BOLTED BL 1250A Learn More about Littelfuse psx square body fuses	Datasheet	Non-Stocked Lead-Time 15 Weeks	€956.93 €852.61 €752.38	Min.: 1 Mult.: 1	Semiconductor Fuses	1.25 kA	Fast-Acting Fuses	1.5 kVDC	200 kA	Blade	Visual Indicator	Bulk	PSX