PSR Bolted Blade Series - High-Speed Square Body Fuses

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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. Available in Bolted Blade Style Termination (Typical in North American Market) with visual blown fuse indication standard on all fuses and optional Micro-switch for external indication.

Features/Benefits

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

Applications

  • 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

Access specifications, certifications, check availability and order parts below

Catalog #Amps (A)Interrupting RatingOpeningCase SizeAmp Code (part number)StockCompare
PSR030UL004040200 kA @ 700 VacVery Fast-Acting (FF)3040Check
PSR030UL005050200 kA @ 700 VacVery Fast-Acting (FF)3050Check
PSR030UL006363200 kA @ 700 VacVery Fast-Acting (FF)3063Check
PSR030UL008080200 kA @ 700 VacVery Fast-Acting (FF)3080Check
PSR030UL0100100200 kA @ 700 VacVery Fast-Acting (FF)30100Check
PSR030UL0125125200 kA @ 700 VacVery Fast-Acting (FF)30125Check
PSR030UL0160160200 kA @ 700 VacVery Fast-Acting (FF)30160Check
PSR030UL0200200200 kA @ 700 VacVery Fast-Acting (FF)30200Check
PSR030UL0250250200 kA @ 700 VacVery Fast-Acting (FF)30250Check
PSR030UL0315315200 kA @ 700 VacVery Fast-Acting (FF)30315Check
PSR030UL0350350200 kA @ 700 VacVery Fast-Acting (FF)30350Check
PSR030UL0400400200 kA @ 700 VacVery Fast-Acting (FF)30400Check
PSR030UL0450450200 kA @ 700 VacVery Fast-Acting (FF)30450Check
PSR030UL0500500200 kA @ 700 VacVery Fast-Acting (FF)30500Check
PSR030UL0550550200 kA @ 700 VacVery Fast-Acting (FF)30550Check
PSR030UL0630630200 kA @ 700 VacVery Fast-Acting (FF)30630Check
PSR030US004040200 kA @ 700 VacVery Fast-Acting (FF)3040Check
PSR030US005050200 kA @ 700 VacVery Fast-Acting (FF)3050Check
PSR030US006363200 kA @ 700 VacVery Fast-Acting (FF)3063Check
PSR030US008080200 kA @ 700 VacVery Fast-Acting (FF)3080Check
PSR030US0100100200 kA @ 700 VacVery Fast-Acting (FF)30100Check
PSR030US0125125200 kA @ 700 VacVery Fast-Acting (FF)30125Check
PSR030US0160160200 kA @ 700 VacVery Fast-Acting (FF)30160Check
PSR030US0200200200 kA @ 700 VacVery Fast-Acting (FF)30200Check
PSR030US0250250200 kA @ 700 VacVery Fast-Acting (FF)30250Check
PSR030US0315315200 kA @ 700 VacVery Fast-Acting (FF)30315Check
PSR030US0350350200 kA @ 700 VacVery Fast-Acting (FF)30350Check
PSR030US0400400200 kA @ 700 VacVery Fast-Acting (FF)30400Check
PSR030US0450450200 kA @ 700 VacVery Fast-Acting (FF)30450Check
PSR030US0500500200 kA @ 700 VacVery Fast-Acting (FF)30500Check
PSR030US0550550200 kA @ 700 VacVery Fast-Acting (FF)30550Check
PSR030US0630630200 kA @ 700 VacVery Fast-Acting (FF)30630Check
PSR031UL0200200200 kA @ 700 VacVery Fast-Acting (FF)31200Check
PSR031UL0250250200 kA @ 700 VacVery Fast-Acting (FF)31250Check
PSR031UL0315315200 kA @ 700 VacVery Fast-Acting (FF)31315Check
PSR031UL0350350200 kA @ 700 VacVery Fast-Acting (FF)31350Check
PSR031UL0400400200 kA @ 700 VacVery Fast-Acting (FF)31400Check
PSR031UL0450450200 kA @ 700 VacVery Fast-Acting (FF)31450Check
PSR031UL0500500200 kA @ 700 VacVery Fast-Acting (FF)31500Check
PSR031UL0550550200 kA @ 700 VacVery Fast-Acting (FF)31550Check
PSR031UL0630630200 kA @ 700 VacVery Fast-Acting (FF)31630Check
PSR031UL0700700200 kA @ 700 VacVery Fast-Acting (FF)31700Check
PSR031UL0800800200 kA @ 700 VacVery Fast-Acting (FF)31800Check
PSR031UL0900900200 kA @ 600 VacVery Fast-Acting (FF)31900Check
PSR031US0200200200 kA @ 700 VacVery Fast-Acting (FF)31200Check
PSR031US0250250200 kA @ 700 VacVery Fast-Acting (FF)31250Check
PSR031US0315315200 kA @ 700 VacVery Fast-Acting (FF)31315Check
PSR031US0350350200 kA @ 700 VacVery Fast-Acting (FF)31350Check
PSR031US0400400200 kA @ 700 VacVery Fast-Acting (FF)31400Check
PSR031US0450450200 kA @ 700 VacVery Fast-Acting (FF)31450Check
PSR031US0500500200 kA @ 700 VacVery Fast-Acting (FF)31500Check
PSR031US0550550200 kA @ 700 VacVery Fast-Acting (FF)31550Check
PSR031US0630630200 kA @ 700 VacVery Fast-Acting (FF)31630Check
PSR031US0700700200 kA @ 700 VacVery Fast-Acting (FF)31700Check
PSR031US0800800200 kA @ 700 VacVery Fast-Acting (FF)31800Check
PSR031US0900900200 kA @ 600 VacVery Fast-Acting (FF)31900Check
PSR032UL0400400200 kA @ 700 VacVery Fast-Acting (FF)32400Check
PSR032UL0450450200 kA @ 700 VacVery Fast-Acting (FF)32450Check
PSR032UL0500500200 kA @ 700 VacVery Fast-Acting (FF)32500Check
PSR032UL0550550200 kA @ 700 VacVery Fast-Acting (FF)32550Check
PSR032UL0630630200 kA @ 700 VacVery Fast-Acting (FF)32630Check
PSR032UL0700700200 kA @ 700 VacVery Fast-Acting (FF)32700Check
PSR032UL0800800200 kA @ 700 VacVery Fast-Acting (FF)32800Check
PSR032UL0900900200 kA @ 700 VacVery Fast-Acting (FF)32900Check
PSR032UL10001000200 kA @ 700 VacVery Fast-Acting (FF)321000Check
PSR032UL11001100200 kA @ 700 VacVery Fast-Acting (FF)321100Check
PSR032US0400400200 kA @ 700 VacVery Fast-Acting (FF)32400Check
PSR032US0450450200 kA @ 700 VacVery Fast-Acting (FF)32450Check
PSR032US0500500200 kA @ 700 VacVery Fast-Acting (FF)32500Check
PSR032US0550550200 kA @ 700 VacVery Fast-Acting (FF)32550Check
PSR032US0630630200 kA @ 700 VacVery Fast-Acting (FF)32630Check
PSR032US0700700200 kA @ 700 VacVery Fast-Acting (FF)32700Check
PSR032US0800800200 kA @ 700 VacVery Fast-Acting (FF)32800Check
PSR032US0900900200 kA @ 700 VacVery Fast-Acting (FF)32900Check
PSR032US10001000200 kA @ 700 VacVery Fast-Acting (FF)321000Check
PSR032US11001100200 kA @ 700 VacVery Fast-Acting (FF)321100Check
PSR033UL0450450200 kA @ 700 VacVery Fast-Acting (FF)33450Check
PSR033UL0500500200 kA @ 700 VacVery Fast-Acting (FF)33500Check
PSR033UL0550550200 kA @ 700 VacVery Fast-Acting (FF)33550Check
PSR033UL0630630200 kA @ 700 VacVery Fast-Acting (FF)33630Check
PSR033UL0700700200 kA @ 700 VacVery Fast-Acting (FF)33700Check
PSR033UL0800800200 kA @ 700 VacVery Fast-Acting (FF)33800Check
PSR033UL0900900200 kA @ 700 VacVery Fast-Acting (FF)33900Check
PSR033UL10001000200 kA @ 700 VacVery Fast-Acting (FF)331000Check
PSR033UL11001100200 kA @ 700 VacVery Fast-Acting (FF)331100Check
PSR033UL12501250200 kA @ 700 VacVery Fast-Acting (FF)331250Check
PSR033UL14001400200 kA @ 700 VacVery Fast-Acting (FF)331400Check
PSR033UL15001500200 kA @ 650 VacVery Fast-Acting (FF)331500Check
PSR033UL16001600200 kA @ 650 VacVery Fast-Acting (FF)331600Check
PSR033UL18001800200 kA @ 650 VacVery Fast-Acting (FF)331800Check
PSR033UL20002000200 kA @ 600 VacVery Fast-Acting (FF)332000Check
PSR033US0450450200 kA @ 700 VacVery Fast-Acting (FF)33450Check
PSR033US0500500200 kA @ 700 VacVery Fast-Acting (FF)33500Check
PSR033US0550550200 kA @ 700 VacVery Fast-Acting (FF)33550Check
PSR033US0630630200 kA @ 700 VacVery Fast-Acting (FF)33630Check
PSR033US0700700200 kA @ 700 VacVery Fast-Acting (FF)33700Check
PSR033US0800800200 kA @ 700 VacVery Fast-Acting (FF)33800Check
PSR033US0900900200 kA @ 700 VacVery Fast-Acting (FF)33900Check
PSR033US10001000200 kA @ 700 VacVery Fast-Acting (FF)331000Check
PSR033US11001100200 kA @ 700 VacVery Fast-Acting (FF)331100Check
PSR033US12501250200 kA @ 700 VacVery Fast-Acting (FF)331250Check
PSR033US14001400200 kA @ 700 VacVery Fast-Acting (FF)331400Check
PSR033US15001500200 kA @ 650 VacVery Fast-Acting (FF)331500Check
PSR033US16001600200 kA @ 650 VacVery Fast-Acting (FF)331600Check
PSR033US18001800200 kA @ 650 VacVery Fast-Acting (FF)331800Check
PSR033US20002000200 kA @ 600 VacVery Fast-Acting (FF)332000Check
PSR070UL005050100 kA @ 1300 VacVery Fast-Acting (FF)7050Check
PSR070UL006363100 kA @ 1300 VacVery Fast-Acting (FF)7063Check
PSR070UL008080100 kA @ 1300 VacVery Fast-Acting (FF)7080Check
PSR070UL0100100100 kA @ 1300 VacVery Fast-Acting (FF)70100Check
PSR070UL0125125100 kA @ 1300 VacVery Fast-Acting (FF)70125Check
PSR070UL0160160100 kA @ 1300 VacVery Fast-Acting (FF)70160Check
PSR070UL0200200100 kA @ 1300 VacVery Fast-Acting (FF)70200Check
PSR070UL0250250100 kA @ 1300 VacVery Fast-Acting (FF)70250Check
PSR070UL0280280100 kA @ 1300 VacVery Fast-Acting (FF)70280Check
PSR070UL0315315100 kA @ 1300 VacVery Fast-Acting (FF)70315Check
PSR070UL0350350100 kA @ 1300 VacVery Fast-Acting (FF)70350Check
PSR070UL0400400100 kA @ 1200 VacVery Fast-Acting (FF)70400Check
PSR071UL0160160100 kA @ 1300 VacVery Fast-Acting (FF)71160Check
PSR071UL0200200100 kA @ 1300 VacVery Fast-Acting (FF)71200Check
PSR071UL0250250100 kA @ 1300 VacVery Fast-Acting (FF)71250Check
PSR071UL0280280100 kA @ 1300 VacVery Fast-Acting (FF)71280Check
PSR071UL0315315100 kA @ 1300 VacVery Fast-Acting (FF)71315Check
PSR071UL0350350100 kA @ 1300 VacVery Fast-Acting (FF)71350Check
PSR071UL0400400100 kA @ 1300 VacVery Fast-Acting (FF)71400Check
PSR071UL0450450100 kA @ 1300 VacVery Fast-Acting (FF)71450Check
PSR072UL0250250100 kA @ 1300 VacVery Fast-Acting (FF)72250Check
PSR072UL0280280100 kA @ 1300 VacVery Fast-Acting (FF)72280Check
PSR072UL0315315100 kA @ 1300 VacVery Fast-Acting (FF)72315Check
PSR072UL0350350100 kA @ 1300 VacVery Fast-Acting (FF)72350Check
PSR072UL0400400100 kA @ 1300 VacVery Fast-Acting (FF)72400Check
PSR072UL0450450100 kA @ 1300 VacVery Fast-Acting (FF)72450Check
PSR072UL0500500100 kA @ 1300 VacVery Fast-Acting (FF)72500Check
PSR072UL0550550100 kA @ 1300 VacVery Fast-Acting (FF)72550Check
PSR072UL0630630100 kA @ 1300 VacVery Fast-Acting (FF)72630Check
PSR073UL0315315100 kA @ 1300 VacVery Fast-Acting (FF)73315Check
PSR073UL0350350100 kA @ 1300 VacVery Fast-Acting (FF)73350Check
PSR073UL0400400100 kA @ 1300 VacVery Fast-Acting (FF)73400Check
PSR073UL0450450100 kA @ 1300 VacVery Fast-Acting (FF)73450Check
PSR073UL0500500100 kA @ 1300 VacVery Fast-Acting (FF)73500Check
PSR073UL0550550100 kA @ 1300 VacVery Fast-Acting (FF)73550Check
PSR073UL0630630100 kA @ 1300 VacVery Fast-Acting (FF)73630Check
PSR073UL0700700100 kA @ 1300 VacVery Fast-Acting (FF)73700Check
Catalog # Certificates
Sorting icon
PSR030UL0040 URcurus
PSR030UL0050 URcurus
PSR030UL0063 URcurus
PSR030UL0080 URcurus
PSR030UL0100 URcurus
PSR030UL0125 URcurus
PSR030UL0160 URcurus
PSR030UL0200 URcurus
PSR030UL0250 URcurus
PSR030UL0315 URcurus
PSR030UL0350 URcurus
PSR030UL0400 URcurus
PSR030UL0450 URcurus
PSR030UL0500 URcurus
PSR030UL0550 URcurus
PSR030UL0630 URcurus
PSR030US0040 URcurus
PSR030US0050 URcurus
PSR030US0063 URcurus
PSR030US0080 URcurus
PSR030US0100 URcurus
PSR030US0125 URcurus
PSR030US0160 URcurus
PSR030US0200 URcurus
PSR030US0250 URcurus
PSR030US0315 URcurus
PSR030US0350 URcurus
PSR030US0400 URcurus
PSR030US0450 URcurus
PSR030US0500 URcurus
PSR030US0550 URcurus
PSR030US0630 URcurus
PSR031UL0200 URcurus
PSR031UL0250 URcurus
PSR031UL0315 URcurus
PSR031UL0350 URcurus
PSR031UL0400 URcurus
PSR031UL0450 URcurus
PSR031UL0500 URcurus
PSR031UL0550 URcurus
PSR031UL0630 URcurus
PSR031UL0700 URcurus
PSR031UL0800 URcurus
PSR031UL0900 URcurus
PSR031US0200 URcurus
PSR031US0250 URcurus
PSR031US0315 URcurus
PSR031US0350 URcurus
PSR031US0400 URcurus
PSR031US0450 URcurus
PSR031US0500 URcurus
PSR031US0550 URcurus
PSR031US0630 URcurus
PSR031US0700 URcurus
PSR031US0800 URcurus
PSR031US0900 URcurus
PSR032UL0400 URcurus
PSR032UL0450 URcurus
PSR032UL0500 URcurus
PSR032UL0550 URcurus
PSR032UL0630 URcurus
PSR032UL0700 URcurus
PSR032UL0800 URcurus
PSR032UL0900 URcurus
PSR032UL1000 URcurus
PSR032UL1100 URcurus
PSR032US0400 URcurus
PSR032US0450 URcurus
PSR032US0500 URcurus
PSR032US0550 URcurus
PSR032US0630 URcurus
PSR032US0700 URcurus
PSR032US0800 URcurus
PSR032US0900 URcurus
PSR032US1000 URcurus
PSR032US1100 URcurus
PSR033UL0450 URcurus
PSR033UL0500 URcurus
PSR033UL0550 URcurus
PSR033UL0630 URcurus
PSR033UL0700 URcurus
PSR033UL0800 URcurus
PSR033UL0900 URcurus
PSR033UL1000 URcurus
PSR033UL1100 URcurus
PSR033UL1250 URcurus
PSR033UL1400 URcurus
PSR033UL1500 URcurus
PSR033UL1600 URcurus
PSR033UL1800 URcurus
PSR033UL2000 URcurus
PSR033US0450 URcurus
PSR033US0500 URcurus
PSR033US0550 URcurus
PSR033US0630 URcurus
PSR033US0700 URcurus
PSR033US0800 URcurus
PSR033US0900 URcurus
PSR033US1000 URcurus
PSR033US1100 URcurus
PSR033US1250 URcurus
PSR033US1400 URcurus
PSR033US1500 URcurus
PSR033US1600 URcurus
PSR033US1800 URcurus
PSR033US2000 URcurus
PSR070UL0050 URcurus
PSR070UL0063 URcurus
PSR070UL0080 URcurus
PSR070UL0100 URcurus
PSR070UL0125 URcurus
PSR070UL0160 URcurus
PSR070UL0200 URcurus
PSR070UL0250 URcurus
PSR070UL0280 URcurus
PSR070UL0315 URcurus
PSR070UL0350 URcurus
PSR070UL0400 URcurus
PSR071UL0160 URcurus
PSR071UL0200 URcurus
PSR071UL0250 URcurus
PSR071UL0280 URcurus
PSR071UL0315 URcurus
PSR071UL0350 URcurus
PSR071UL0400 URcurus
PSR071UL0450 URcurus
PSR072UL0250 URcurus
PSR072UL0280 URcurus
PSR072UL0315 URcurus
PSR072UL0350 URcurus
PSR072UL0400 URcurus
PSR072UL0450 URcurus
PSR072UL0500 URcurus
PSR072UL0550 URcurus
PSR072UL0630 URcurus
PSR073UL0315 URcurus
PSR073UL0350 URcurus
PSR073UL0400 URcurus
PSR073UL0450 URcurus
PSR073UL0500 URcurus
PSR073UL0550 URcurus
PSR073UL0630 URcurus
PSR073UL0700 URcurus
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s)
PSR070UL0125Z POWR-SPEED SQB SIZE 70 US LONG BL 125A RoHS No 06/01/2020 PbFree No 06/01/2020 CoC_RoHS10_PSR070UL0125Z_06-01-2020 REACH205_Declaration_PSR070UL0125Z_06-01-2020
Does not Contain
PSR070UL0200Z POWR-SPEED SQB SIZE 70 US LONG BL 200A RoHS No 11/16/2020 PbFree No 11/16/2020 CoC_RoHS10_PSR070UL0200Z_11-17-2020 REACH209_Declaration_PSR070UL0200Z_11-17-2020 Yes
11/16/2020
Does not Contain
PSR071UL0250Z POWR-SPEED SQB SIZE 71 US LONG BL 250A RoHS No 03/04/2020 PbFree No 03/04/2020 CoC_RoHS10_PSR071UL0250Z_03-05-2020 REACH205_Declaration_PSR071UL0250Z_03-05-2020 No
03/04/2020
Does not Contain
PSR073UL0315X POWR-SPEED SQB SIZE 73 US LONG BL 315A RoHS No 11/16/2020 PbFree No 11/16/2020 CoC_RoHS10_PSR073UL0315X_11-17-2020 REACH211_Declaration_PSR073UL0315X_03-19-2021 Yes
11/16/2020
Does not Contain
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