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Electrical, Specialty Fuses

Category Introduction

Products in this family are used for over-current fault protection, and function on the basis of current flow in excess of a desired maximum causing the destruction of a conductive element within the device. They are distinguished from common fuses by one of several factors; bearing a non-supplementary classification under the UL248 standard, certification for use in hazardous or explosive environments, or a form factor other than those commonly encountered in products used for supplementary equipment protection such as those with an indication function or fusible cable links, and fuses designated for specific applications such as protection of telecommunications circuits or multimeters.

Product List

16687 Items
PDF Mfr Part # Quantity
Available		 UnitPrice RFQ Series Packaging Product StatusMounting TypeFuse TypeCurrent Rating (Amps)Voltage Rating - ACVoltage Rating - DCResponse TimeApplicationsFeaturesClassApproval AgencyOperating TemperatureBreaking Capacity @ Rated VoltagePackage / CaseSize / Dimension
L70QS200.V
L70QS200.V
FUSE CRTRDGE 200A 700VAC/700VDC
Littelfuse Inc.
 3 $121.36
POWR-SPEED™ L70QS Box ActiveBolt MountCartridge200A700 V700 VFast BlowSemiconductors--CE, cURus, UR-55°C ~ 125°C200kA AC, 50kA DCCylindrical, Blade Terminal (Bolt)1.218" Dia x 5.085" L (30.94mm x 129.16mm)
L75QS200.V
L75QS200.V
750VDC HIGHSPEED SEMICONDUCTOR F
Littelfuse Inc.
 8 $128.06
POWR-SPEED® L75QS Box ActiveBolt MountCartridge200A-750 VFast BlowElectrical, Industrial--CE, cURus, UL-55°C ~ 125°C50kACylindrical, Blade Terminal (Bolt)1.218" Dia x 2.875" L (30.94mm x 73.03mm)
L15S1000V
L15S1000V
FUSE CARTRIDGE 1KA 150VAC/100VDC
Littelfuse Inc.
 2 $130.69
POWR-GARD® L15S Bulk ActiveBolt MountCartridge1kA150 V100 VFast BlowSemiconductors--CE, CSA, UR-100kA AC, 20kA DCCylindrical, Blade Terminal (Bolt)1.500" Dia x 1.252" L (38.10mm x 31.80mm)
SPFJ125.XXL
SPFJ125.XXL
FUSE CARTRIDGE 125A 600VAC/1KVDC
Littelfuse Inc.
 7 $164.06
POWR-GARD® SPFJ Bulk ActiveBolt MountCartridge125A600 V1 kVFast BlowSolar (Photovoltaic)--CE, UL-200kA AC, 20kA DCCylindrical, Blade Terminal (Bolt)1.500" Dia x 3.012" L (38.10mm x 76.50mm)
SPFJ100.X
SPFJ100.X
FUSE CRTRDGE 100A 1KVDC CYLINDR
Littelfuse Inc.
 2 $164.22
POWR-GARD® SPFJ Bulk ActiveBolt MountCartridge100A-1 kVFast BlowSolar (Photovoltaic)-JCE, UL-20kACylindrical, Blade Terminal (Bolt)1.500" Dia x 3.012" L (38.10mm x 76.50mm)
L50QS450.X
L50QS450.X
FUSE CRTRDGE 450A 500VAC/VDC
Littelfuse Inc.
 5 $167.97
POWR-SPEED™ L50QS Box ActiveBolt MountCartridge450A500 V500 VFast BlowSemiconductors--CE, cURus, UR-55°C ~ 125°C200kA AC, 50kA DCCylindrical, Blade Terminal (Bolt)2.000" Dia x 4.468" L (50.80mm x 113.49mm)
L50QS500.X
L50QS500.X
FUSE CRTRDGE 500A 500VAC/VDC
Littelfuse Inc.
 4 $168.67
POWR-SPEED™ L50QS Box ActiveBolt MountCartridge500A500 V500 VFast BlowSemiconductors--CE, cURus, UR-55°C ~ 125°C200kA AC, 50kA DCCylindrical, Blade Terminal (Bolt)2.000" Dia x 4.468" L (50.80mm x 113.49mm)
L50QS600.X
L50QS600.X
FUSE CRTRDGE 600A 500VAC/VDC
Littelfuse Inc.
 4 $167.38
POWR-SPEED™ L50QS Box ActiveBolt MountCartridge600A500 V500 VFast BlowSemiconductors--CE, cURus, UR-55°C ~ 125°C200kA AC, 50kA DCCylindrical, Blade Terminal (Bolt)2.000" Dia x 4.468" L (50.80mm x 113.49mm)
PF-FB1-400
PF-FB1-400
FUSE BOLT MNT 800VAC 800VDC 400A
Bourns Inc.
 4 $172.75
POWrFuse™ PF-F Box ActiveBolt MountCartridge400A800 V800 V-Semiconductors-aRcURus-55°C ~ 125°C100kA AC, 50kA DCCylindrical, Blade Terminal (Bolt)1.386" Dia x 2.724" L (35.20mm x 69.20mm)
PF-FB2-400
PF-FB2-400
FUSE BOLT MNT 800VAC 800VDC 400A
Bourns Inc.
 3 $171.73
POWrFuse™ PF-F Box ActiveBolt MountCartridge400A800 V800 V-Semiconductors-aRcURus-55°C ~ 125°C100kA AC, 50kA DCCylindrical, Blade Terminal (Bolt)1.386" Dia x 2.724" L (35.20mm x 69.20mm)
PF-FB2-225
PF-FB2-225
FUSE BOLT MNT 800VAC 800VDC 225A
Bourns Inc.
 2 $172.21
POWrFuse™ PF-F Box ActiveBolt MountCartridge225A800 V800 V-Semiconductors-aRcURus-55°C ~ 125°C100kA AC, 50kA DCCylindrical, Blade Terminal (Bolt)1.386" Dia x 2.724" L (35.20mm x 69.20mm)
PF-FB2-300
PF-FB2-300
FUSE BOLT MNT 800VAC 800VDC 300A
Bourns Inc.
 4 $174.52
POWrFuse™ PF-F Box ActiveBolt MountCartridge300A800 V800 V-Semiconductors-aRcURus-55°C ~ 125°C100kA AC, 50kA DCCylindrical, Blade Terminal (Bolt)1.386" Dia x 2.724" L (35.20mm x 69.20mm)
PF-FB2-250
PF-FB2-250
FUSE BOLT MNT 800VAC 800VDC 250A
Bourns Inc.
 4 $171.68
POWrFuse™ PF-F Box ActiveBolt MountCartridge250A800 V800 V-Semiconductors-aRcURus-55°C ~ 125°C100kA AC, 50kA DCCylindrical, Blade Terminal (Bolt)1.386" Dia x 2.724" L (35.20mm x 69.20mm)
PF-FB1-300
PF-FB1-300
FUSE BOLT MNT 800VAC 800VDC 300A
Bourns Inc.
 7 $176.49
POWrFuse™ PF-F Box ActiveBolt MountCartridge300A800 V800 V-Semiconductors-aRcURus-55°C ~ 125°C100kA AC, 50kA DCCylindrical, Blade Terminal (Bolt)1.386" Dia x 2.724" L (35.20mm x 69.20mm)
PF-FB2-350
PF-FB2-350
FUSE BOLT MNT 800VAC 800VDC 350A
Bourns Inc.
 6 $171.57
POWrFuse™ PF-F Box ActiveBolt MountCartridge350A800 V800 V-Semiconductors-aRcURus-55°C ~ 125°C100kA AC, 50kA DCCylindrical, Blade Terminal (Bolt)1.386" Dia x 2.724" L (35.20mm x 69.20mm)
PF-FB1-225
PF-FB1-225
FUSE BOLT MNT 800VAC 800VDC 225A
Bourns Inc.
 6 $172.43
POWrFuse™ PF-F Box ActiveBolt MountCartridge225A800 V800 V-Semiconductors-aRcURus-55°C ~ 125°C100kA AC, 50kA DCCylindrical, Blade Terminal (Bolt)1.386" Dia x 2.724" L (35.20mm x 69.20mm)
PF-FB1-250
PF-FB1-250
FUSE BOLT MNT 800VAC 800VDC 250A
Bourns Inc.
 4 $174.85
POWrFuse™ PF-F Box ActiveBolt MountCartridge250A800 V800 V-Semiconductors-aRcURus-55°C ~ 125°C100kA AC, 50kA DCCylindrical, Blade Terminal (Bolt)1.386" Dia x 2.724" L (35.20mm x 69.20mm)
PF-FB1-350
PF-FB1-350
FUSE BOLT MNT 800VAC 800VDC 350A
Bourns Inc.
 3 $176.11
POWrFuse™ PF-F Box ActiveBolt MountCartridge350A800 V800 V-Semiconductors-aRcURus-55°C ~ 125°C100kA AC, 50kA DCCylindrical, Blade Terminal (Bolt)1.386" Dia x 2.724" L (35.20mm x 69.20mm)
L70QS300.X
L70QS300.X
FUSE CARTRIDGE 300A 700VAC/VDC
Littelfuse Inc.
 6 $193.09
POWR-SPEED™ L70QS Bulk ActiveBolt MountCartridge300A700 V700 VFast BlowSemiconductors--CE, cURus-55°C ~ 125°C200kA AC, 50kA DCCylindrical, Blade Terminal (Bolt)2.000" Dia x 2.844" L (50.80mm x 72.24mm)
L70QS250.X
L70QS250.X
FUSE CRTRDGE 250A 700VAC/700VDC
Littelfuse Inc.
 2 $195.21
POWR-SPEED™ L70QS Box ActiveBolt MountCartridge250A700 V700 VFast BlowSemiconductors--CE, cURus, UR-55°C ~ 125°C200kA AC, 50kA DCCylindrical, Blade Terminal (Bolt)2.000" Dia x 5.094" L (50.80mm x 129.39mm)