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 1500VDC, 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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Qty. RoHS ECAD Model Product
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Voltage Rating DC
Interrupt Rating
Termination Style
Indicator Style
Packaging
Series
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL DIN BL 500A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 12
Mult.: 1

Semiconductor Fuses 500 A Fast-Acting Fuses 1.5 kVDC 200 kA Blade Visual Indicator Bulk PSX
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL DIN BL 550A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 12
Mult.: 1

Semiconductor Fuses 550 A Fast-Acting Fuses 1.5 kVDC 200 kA Blade Visual Indicator Bulk PSX
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL FLUSH 80A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 12
Mult.: 1

Semiconductor Fuses 80 A Fast-Acting Fuses 1.5 kVDC 200 kA Threaded Visual Indicator Bulk PSX
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL FLUSH 100A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 12
Mult.: 1

Semiconductor Fuses 100 A Fast-Acting Fuses 1.5 kVDC 200 kA Threaded Visual Indicator Bulk PSX
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL FLUSH 125A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 12
Mult.: 1

Semiconductor Fuses 125 A Fast-Acting Fuses 1.5 kVDC 200 kA Threaded Visual Indicator Bulk PSX
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL FLUSH 160A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 12
Mult.: 1

Semiconductor Fuses 160 A Fast-Acting Fuses 1.5 kVDC 200 kA Threaded Visual Indicator Bulk PSX
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL FLUSH 200A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 12
Mult.: 1

Semiconductor Fuses 200 A Fast-Acting Fuses 1.5 kVDC 200 kA Threaded Visual Indicator Bulk PSX
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL FLUSH 250A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 12
Mult.: 1

Semiconductor Fuses 250 A Fast-Acting Fuses 1.5 kVDC 200 kA Threaded Visual Indicator Bulk PSX
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL FLUSH 280A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 12
Mult.: 1

Semiconductor Fuses 280 A Fast-Acting Fuses 1.5 kVDC 200 kA Threaded Visual Indicator Bulk PSX
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL FLUSH 315A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 12
Mult.: 1

Semiconductor Fuses 315 A Fast-Acting Fuses 1.5 kVDC 200 kA Threaded Visual Indicator Bulk PSX
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL FLUSH 350A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 12
Mult.: 1

Semiconductor Fuses 350 A Fast-Acting Fuses 1.5 kVDC 200 kA Threaded Visual Indicator Bulk PSX
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL FLUSH 400A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 12
Mult.: 1

Semiconductor Fuses 400 A Fast-Acting Fuses 1.5 kVDC 200 kA Threaded Visual Indicator Bulk PSX
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL FLUSH 500A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 12
Mult.: 1

Semiconductor Fuses 500 A Fast-Acting Fuses 1.5 kVDC 200 kA Threaded Visual Indicator Bulk PSX
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL FLUSH 630A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 12
Mult.: 1

Semiconductor Fuses 630 A Fast-Acting Fuses 1.5 kVDC 200 kA Threaded Visual Indicator Bulk PSX
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 80A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 80 A Fast-Acting Fuses 1.5 kVDC 200 kA Blade Visual Indicator Bulk PSX
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 100A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 12
Mult.: 1

Semiconductor Fuses 100 A Fast-Acting Fuses 1.5 kVDC 200 kA Blade Visual Indicator Bulk PSX
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 125A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 12
Mult.: 1

Semiconductor Fuses 125 A Fast-Acting Fuses 1.5 kVDC 200 kA Blade Visual Indicator Bulk PSX
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 160A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 12
Mult.: 1

Semiconductor Fuses 160 A Fast-Acting Fuses 1.5 kVDC 200 kA Blade Visual Indicator Bulk PSX
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 250A
Datasheet
Lead-Time 15 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 250 A Fast-Acting Fuses 1.5 kVDC 200 kA Blade Visual Indicator Bulk PSX
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 280A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 12
Mult.: 1

Semiconductor Fuses 280 A Fast-Acting Fuses 1.5 kVDC 200 kA Blade Visual Indicator Bulk PSX
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 315A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 12
Mult.: 1

Semiconductor Fuses 315 A Fast-Acting Fuses 1.5 kVDC 200 kA Blade Visual Indicator Bulk PSX
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 350A
Datasheet
Lead-Time 15 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 350 A Fast-Acting Fuses 1.5 kVDC 200 kA Blade Visual Indicator Bulk PSX
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 450A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 12
Mult.: 1

Semiconductor Fuses 450 A Fast-Acting Fuses 1.5 kVDC 200 kA Blade Visual Indicator Bulk PSX
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 500A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 12
Mult.: 1

Semiconductor Fuses 500 A Fast-Acting Fuses 1.5 kVDC 200 kA Blade Visual Indicator Bulk PSX
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 550A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 12
Mult.: 1

Semiconductor Fuses 550 A Fast-Acting Fuses 1.5 kVDC 200 kA Blade Visual Indicator Bulk PSX