PSR033FS1600 - PSR Flush End Series

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Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

Littelfuse PSR Series High-Speed Square Body Fuses are specially designed for protection of power semiconductor devices such as diodes, triacs, IGBTs, SCRs, MOSFETs and other solid state devices that are typically designed into power conversion and power conditioning equipment. Variable frequency drives, inverters, UPS, rectifiers and soft-starters are examples of typical equipment designed with sensitive power semiconductor devices that cannot withstand any line surge or overcurrent conditions and require high-speed protection.

Littelfuse POWR-SPEED® PSR Series products offer optimized circuit protection at the extremely fast speed required to protect modern day power conversion devices. Such products are commonly found in numerous applications including pulp and paper industries, cranes and heavy-lifting equipment, processing industries, wastewater treatment plants and various large factories and MRO facilities.


  • Best in Class DC performance
  • Extremely current limiting
  • Superior cycling capability
  • Global certification cURus, CCC, IEC
  • Direct bus-bar mount design
  • Visual and optional microswitch fuse blown indication
  • Low watt-loss design
  • Compliance with US and Canadian requirements
  • Class aR performance according to IEC60269-4



  • Power Conversion Devices (UPS, Inverter, Rectifiers, Drives)
  • DC Systems (DC Common Bus, DC Injection Braking)
  • Battery Protection Application (Energy Storage Systems)
  • Electric Vehicle Charging Stations
  • Heaters and Power Supplies
Property (Mouseover for details) Value
Ampere Rating (A) 1600
Interrupting Rating 200 kA @ 650 Vac
Opening Very Fast-Acting (FF)
Case Size 33
Amp Code (Part Number) 1600

CEicon CE PSR FS US UL PSR Bolted Blade Series

tc-icon PSR33 Time Current Curve

pdficon PSR Series High Speed Square Body Fuses Datasheet

pdficon PSR-FS 2D Print

pdficon PSR-FL 2D Print

icon-request-icon PSR072FS 3D Model STP

icon-request-icon PSR032FS 3D Model STP

icon-request-icon PSR033FS 3D Model STP

icon-request-icon PSR032FL 3D Model STP

icon-request-icon PSR030FS 3D Model STP

icon-request-icon PSR073FS 3D Model STP

icon-request-icon PSR033FL 3D Model STP

icon-request-icon PSR070FS 3D Model STP

icon-request-icon PSR073FL 3D Model STP

icon-request-icon PSR031FS 3D Model STP

icon-request-icon PSR030FL 3D Model STP

icon-request-icon PSR071FL 3D Model STP

icon-request-icon PSR072FL 3D Model STP

icon-request-icon PRS031FL 3D Model STP

icon-request-icon PSR071FS 3D Model STP

icon-request-icon PSR070FL 3D Model STP

plt-icon PSR30 Peak-Let Thru Curve

plt-icon PSR31 Peak Let-Thru Curve

plt-icon PSR32 D Peak Let-Thru Curve

plt-icon PSR33 D Peak Let-Thru Curve

plt-icon PSR70 Peak Let-Thru Curve

plt-icon PSR71 E Peak Let-Thru Curve

plt-icon PSR72 D Peak Let-Thru Curve

tc-icon PSR30 Time Current Curve

tc-icon PSR31 Time Current Curve

tc-icon PSR32 Time Current Curve

tc-icon PSR70 Time Current Curve

tc-icon PSR71 Time Current Curve

pdficon CoC_RoHS10_72R020XPR

tc-icon PSR73 Time Current Curve

pdficon POWR-SPEED Fuse Cross Reference Guide - Mandarin

pdficon POWR-SPEED Fuse Cross Reference Guide

pdficon POWR-Speed Technical Applications Guide

pdficon POWR-Speed Technical Application Guide - Japanese

pdficon POWR-Speed Technical Applications Guide - Mandarin

pdficon POWR-SPEED Overcurrent Protection Fundamentals

pdficon POWR-Speed Application Considerations

pdficon Wind Energy Solutions Flyer

pdficon Wind Energy Solutions Flyer-Mandarin

pdficon Wind energy solutions flyer- Spanish

pdficon Wind energy solutions flyer- Brazilian-Portuguese

pdficon PSR73 B Peak Let-Thru Curve

Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
PSR033FS1600Z POWR-SPEED SQBSIZE 33 FLUSH INCHES 1600A RoHS No 03/02/2017 PbFree No 03/02/2017 Yes
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