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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Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL FLUSH 125A
Datasheet
9Factory Stock Available
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PSX Specialty Fuses 125 A 1.5 kVDC 200 kA Square Body Fuses Stud Threaded Stud Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL FLUSH 200A
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15Factory Stock Available
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Min.: 1
Mult.: 1

PSX Specialty Fuses 200 A 1.5 kVDC 200 kA Square Body Fuses Stud Threaded Stud Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL FLUSH 350A
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16Factory Stock Available
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PSX Specialty Fuses 350 A 1.5 kVDC 200 kA Square Body Fuses Stud Threaded Stud Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL FLUSH 400A
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19Factory Stock Available
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PSX Specialty Fuses 400 A 1.5 kVDC 200 kA Square Body Fuses Stud Threaded Stud Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL FLUSH 500A
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1Factory Stock Available
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Mult.: 1

PSX Specialty Fuses 500 A 1.5 kVDC 200 kA Square Body Fuses Stud Threaded Stud Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL FLUSH 630A
Datasheet
5Factory Stock Available
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Min.: 1
Mult.: 1

PSX Specialty Fuses 630 A 1.5 kVDC 200 kA Square Body Fuses Stud Threaded Stud Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 100A
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1Factory Stock Available
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PSX Specialty Fuses 100 A 1.5 kVDC 200 kA Square Body Blade Fuses Screw Blade Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 125A
Datasheet
2Factory Stock Available
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Mult.: 1

PSX Specialty Fuses 125 A 1.5 kVDC 200 kA Square Body Blade Fuses Screw Blade Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 160A
Datasheet
149Factory Stock Available
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Mult.: 1

PSX Specialty Fuses 160 A 1.5 kVDC 200 kA Square Body Blade Fuses Screw Blade Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 350A
Datasheet
84Factory Stock Available
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PSX Specialty Fuses 350 A 1.5 kVDC 200 kA Square Body Blade Fuses Screw Blade Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 550A
Datasheet
2Factory Stock Available
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Min.: 1
Mult.: 1

PSX Specialty Fuses 550 A 1.5 kVDC 200 kA Square Body Blade Fuses Screw Blade Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL BOLTED BL 630A
Datasheet
15Factory Stock Available
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Mult.: 1

PSX Specialty Fuses 630 A 1.5 kVDC 200 kA Square Body Blade Fuses Screw Blade Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses SQB SIZE 3XL DIN BL 700A
Datasheet
22Factory Stock Available
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Mult.: 1

PSX Specialty Fuses 700 A 1.5 kVDC 200 kA Square Body Blade Fuses DIN Blade Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses SQB SIZE 3XL DIN BL 800A
Datasheet
13Factory Stock Available
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PSX Specialty Fuses 800 A 1.5 kVDC 200 kA Square Body Blade Fuses DIN Blade Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses SQB SIZE 3XL DIN BL 900A
Datasheet
2Factory Stock Available
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Min.: 1
Mult.: 1

PSX Specialty Fuses 900 A 1.5 kVDC 200 kA Square Body Blade Fuses DIN Blade Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses SQB SIZE 3XL DIN BL 1100A
Datasheet
5Factory Stock Available
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Min.: 1
Mult.: 1

PSX Specialty Fuses 1.1 kA 1.5 kVDC 200 kA Square Body Blade Fuses DIN Blade Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses SQB SIZE 3XL FLUSH 700A
Datasheet
3Factory Stock Available
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Min.: 1
Mult.: 1

PSX Specialty Fuses 700 A 1.5 kVDC 200 kA Square Body Fuses Stud Threaded Stud Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses SQB SIZE 3XL FLUSH 800A
Datasheet
11Factory Stock Available
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Min.: 1
Mult.: 1

PSX Specialty Fuses 800 A 1.5 kVDC 200 kA Square Body Fuses Stud Threaded Stud Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses SQB SIZE 3XL FLUSH 900A
Datasheet
4Factory Stock Available
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Min.: 1
Mult.: 1

PSX Specialty Fuses 900 A 1.5 kVDC 200 kA Square Body Fuses Stud Threaded Stud Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses SQB SIZE 3XL BOLTED BL 900A
Datasheet
19Factory Stock Available
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Min.: 1
Mult.: 1

PSX Specialty Fuses 900 A 1.5 kVDC 200 kA Square Body Blade Fuses Screw Blade Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses SQB SIZE 3XL BOLTED BL 1250A
Datasheet
1Factory Stock Available
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Min.: 1
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PSX Specialty Fuses 1.25 kA 1.5 kVDC 200 kA Square Body Blade Fuses Screw Blade Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses SQB SIZE 3XL FLUSH 1400A
Datasheet
Non-Stocked Lead-Time 8 Weeks
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Mult.: 1

PSX Specialty Fuses 1.4 kA 1.5 kVDC 200 kA Square Body Fuses Stud Threaded Stud Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses SQB SIZE 3XL BOLTED BL 800A
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 1
Mult.: 1

PSX Specialty Fuses 800 A 1.5 kVDC 200 kA Square Body Blade Fuses Screw Blade Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses SQB SIZE 3XL BOLTED BL 1100A
Datasheet
Non-Stocked Lead-Time 8 Weeks
Min.: 1
Mult.: 1

PSX Specialty Fuses 1.1 kA 1.5 kVDC 200 kA Square Body Blade Fuses Screw Blade Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses SQB SIZE 1XL DIN BL 280A
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 1
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PSX Specialty Fuses 280 A 1.5 kVDC 200 kA Square Body Blade Fuses DIN Blade Visual Blown Fuse Bulk