PSR Series POWR-SPEED® High-Speed Square Body Fuses

Littelfuse's high-speed fuses offer optimized circuit protection to protect modern day power conversion devices

Image of Littelfuse's PSR Series POWR-SPEED® Fuses Littelfuse POWR-SPEED® fuses are specifically designed to protect 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.

POWR-SPEED Catalog

Features
  • Best-in-class DC performance
  • Extreme current limiting
  • Superior cycling capability
  • Global certification cURus, CCC, and 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

PSR Series POWR-SPEED® Fuses

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
FUSE POWR-SPEED INCH SZ:30 50APSR030FS0050ZFUSE POWR-SPEED INCH SZ:30 50A3 - ImmediateView Details
FUSE POWR-SPEED INCH SZ:70 50APSR070FS0050ZFUSE POWR-SPEED INCH SZ:70 50A2 - ImmediateView Details
FUSE POWR-SPEED INCH SZ:72 250APSR072FS0250ZFUSE POWR-SPEED INCH SZ:72 250A2 - ImmediateView Details
POWR-SPEED SQB SIZE 30 FLUSH INCPSR030FS0063ZPOWR-SPEED SQB SIZE 30 FLUSH INC3 - ImmediateView Details
POWR-SPEED SQB SIZE 30 FLUSH INCPSR030FS0100ZPOWR-SPEED SQB SIZE 30 FLUSH INC3 - ImmediateView Details
FUSE SQUARE 125A 700VAC/600VDCPSR030FS0125ZFUSE SQUARE 125A 700VAC/600VDC3 - ImmediateView Details
FUSE SQUARE 200A 700VAC/600VDCPSR030FS0200ZFUSE SQUARE 200A 700VAC/600VDC6 - ImmediateView Details
FUSE SQUARE 250A 700VAC/600VDCPSR030FS0250ZFUSE SQUARE 250A 700VAC/600VDC3 - ImmediateView Details
FUSE SQUARE 315A 700VAC/600VDCPSR030FS0315ZFUSE SQUARE 315A 700VAC/600VDC3 - ImmediateView Details
FUSE SQUARE 350A 700VAC/600VDCPSR030FS0350ZFUSE SQUARE 350A 700VAC/600VDC3 - ImmediateView Details
FUSE SQUARE 400A 700VAC/600VDCPSR030FS0400ZFUSE SQUARE 400A 700VAC/600VDC3 - ImmediateView Details
FUSE SQUARE 450A 700VAC/600VDCPSR030FS0450ZFUSE SQUARE 450A 700VAC/600VDC3 - ImmediateView Details
FUSE SQUARE 500A 700VAC/600VDCPSR030FS0500ZFUSE SQUARE 500A 700VAC/600VDC3 - ImmediateView Details
POWR-SPEED SQB SIZE 31 FLUSH INCPSR031FS0200ZPOWR-SPEED SQB SIZE 31 FLUSH INC3 - ImmediateView Details
POWR-SPEED SQB SIZE 31 FLUSH INCPSR031FS0250ZPOWR-SPEED SQB SIZE 31 FLUSH INC3 - ImmediateView Details
POWR-SPEED SQB SIZE 31 FLUSH INCPSR031FS0315ZPOWR-SPEED SQB SIZE 31 FLUSH INC3 - ImmediateView Details
POWR-SPEED SQB SIZE 31 FLUSH INCPSR031FS0350ZPOWR-SPEED SQB SIZE 31 FLUSH INC3 - ImmediateView Details
POWR-SPEED SQB SIZE 31 FLUSH INCPSR031FS0400ZPOWR-SPEED SQB SIZE 31 FLUSH INC3 - ImmediateView Details
POWR-SPEED SQB SIZE 31 FLUSH INCPSR031FS0450ZPOWR-SPEED SQB SIZE 31 FLUSH INC3 - ImmediateView Details
POWR-SPEED SQB SIZE 31 FLUSH INCPSR031FS0500ZPOWR-SPEED SQB SIZE 31 FLUSH INC3 - ImmediateView Details
Published: 2019-03-13