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
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Series
Packaging
Product Status
Mounting Type
Fuse Type
Current Rating (Amps)
Voltage Rating - AC
Voltage Rating - DC
Response Time
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Operating Temperature
Breaking Capacity @ Rated Voltage
Package / Case
Size / Dimension
PSR070FL0050Z
FUSE SQUARE 50A 1.3KVAC/1KVDC
Littelfuse Inc.
4
$334.21
POWR-SPEED® PSR
Box
Active
Bolt Mount
Square
50A
1.3 kV
1 kV
Fast Blow
Semiconductors
Indicating
-
CCC, CE, cURus, UL
-55°C ~ 125°C
100kA AC, 150kA DC
-
2.913" L x 1.693" W x 1.929" H (74.00mm x 43.00mm x 49.00mm)
PSR070FS0350Z
FUSES POWR-SPEED
Littelfuse Inc.
2
$348.13
POWR-SPEED® PSR
Bulk
Active
Holder
Square
350A
1.3 kV
1 kV
Fast Blow
Semiconductors
Indicating
-
CE, cURus, UL
-55°C ~ 125°C
100kA AC, 150kA DC
Rectangular, Blade
2.913" L x 1.693" W x 1.929" H (74.00mm x 43.00mm x 49.00mm)
PSR031FS0900Z
FUSES POWR-SPEED
Littelfuse Inc.
3
$349.80
POWR-SPEED® PSR
Bulk
Active
Holder
Square
900A
600 V
550 V
Fast Blow
Semiconductors
Indicating
-
CE, cURus, UL
-55°C ~ 125°C
200kA AC, 150kA DC
Rectangular, Blade
1.969" L x 2.028" W x 2.264" H (50.00mm x 51.50mm x 57.50mm)
PSR070FS0400Z
FUSES POWR-SPEED
Littelfuse Inc.
2
$356.62
POWR-SPEED® PSR
Bulk
Active
Holder
Square
400A
1.2 kV
900 V
Fast Blow
Semiconductors
Indicating
-
CE, cURus, UL
-55°C ~ 125°C
100kA AC, 150kA DC
Rectangular, Blade
2.913" L x 1.693" W x 1.929" H (74.00mm x 43.00mm x 49.00mm)
L75QS500.X
750VDC HIGHSPEED SEMICONDUCTOR F
Littelfuse Inc.
4
$361.85
POWR-SPEED® L75QS
Box
Active
Bolt Mount
Cartridge
500A
-
750 V
Fast Blow
Electrical, Industrial
-
-
CE, cURus, UL
-55°C ~ 125°C
50kA
Cylindrical, Blade Terminal (Bolt)
2.000" Dia x 2.844" L (50.80mm x 72.24mm)
L75QS600.X
750VDC HIGHSPEED SEMICONDUCTOR F
Littelfuse Inc.
2
$353.29
POWR-SPEED® L75QS
Box
Active
Bolt Mount
Cartridge
600A
-
750 V
Fast Blow
Electrical, Industrial
-
-
CE, cURus, UL
-55°C ~ 125°C
50kA
Cylindrical, Blade Terminal (Bolt)
2.000" Dia x 2.844" L (50.80mm x 72.24mm)
PSR031DL0900Z
FUSES POWR-SPEED
Littelfuse Inc.
3
$357.64
POWR-SPEED® PSR
Bulk
Active
Bolt Mount
Square
900A
600 V
550 V
Fast Blow
Semiconductors
Indicating
-
CE, cURus, UL
-55°C ~ 125°C
200kA AC, 150kA DC
Rectangular, Blade
1.937" L x 2.028" W x 2.264" H (49.20mm x 51.50mm x 57.50mm)
PSR031DS0900Z
FUSES POWR-SPEED
Littelfuse Inc.
3
$364.13
POWR-SPEED® PSR
Bulk
Active
Bolt Mount
Square
900A
600 V
550 V
Fast Blow
Semiconductors
Indicating
-
CE, cURus, UL
-55°C ~ 125°C
200kA AC, 150kA DC
Rectangular, Blade
1.937" L x 2.028" W x 2.264" H (49.20mm x 51.50mm x 57.50mm)
PSR071FL0280Z
POWR-SPEED SQB SIZE 71 FLUSH MET
Littelfuse Inc.
4
$377.07
POWR-SPEED® PSR
Box
Active
Bolt Mount
Square
280A
1.3 kV
1 kV
Fast Blow
Semiconductors
-
-
CCC, CE, cURus, IEC, UL
-55°C ~ 125°C
100kA AC, 150kA DC
Rectangular, Blade
2.913" L x 2.028" W x 2.264" H (74.00mm x 51.50mm x 57.50mm)
PSR071FL0350Z
FUSE SQUARE 350A 1.3KVAC/1KVDC
Littelfuse Inc.
3
$381.87
POWR-SPEED® PSR
Box
Active
Bolt Mount
Square
350A
1.3 kV
1 kV
Fast Blow
Semiconductors
-
-
CCC, CE, cURus, UL
-55°C ~ 125°C
100kA AC, 150kA DC
-
2.913" L x 2.028" W x 2.264" H (74.00mm x 51.50mm x 57.50mm)
PSR032UL0900X
FUSE SQUARE 900A 700VAC/600VDC
Littelfuse Inc.
2
$383.02
POWR-SPEED® PSR
Box
Active
Bolt Mount
Square
900A
700 V
600 V
Fast Blow
Semiconductors
Indicating
-
CE, cURus, UL
-55°C ~ 125°C
200kA AC, 150kA DC
-
1.898" L x 2.362" W x 2.598" H (48.20mm x 60.00mm x 66.00mm)
PSR031FL0900Z
FUSES POWR-SPEED
Littelfuse Inc.
2
$379.19
POWR-SPEED® PSR
Bulk
Active
Holder
Square
900A
600 V
550 V
Fast Blow
Semiconductors
Indicating
-
CE, cURus, UL
-55°C ~ 125°C
200kA AC, 150kA DC
Rectangular, Blade
1.969" L x 2.028" W x 2.264" H (50.00mm x 51.50mm x 57.50mm)
PSR070DL0350Z
FUSES POWR-SPEED
Littelfuse Inc.
4
$404.86
POWR-SPEED® PSR
Bulk
Active
Bolt Mount
Square
350A
1.3 kV
1 kV
Fast Blow
Semiconductors
Indicating
-
CE, cURus, UL
-55°C ~ 125°C
100kA AC, 150kA DC
Rectangular, Blade
2.823" L x 1.693" W x 1.929" H (71.70mm x 43.00mm x 49.00mm)
PSR070DL0400Z
FUSES POWR-SPEED
Littelfuse Inc.
2
$409.96
POWR-SPEED® PSR
Bulk
Active
Bolt Mount
Square
400A
1.2 kV
900 V
Fast Blow
Semiconductors
Indicating
-
CE, cURus, UL
-55°C ~ 125°C
100kA AC, 150kA DC
Rectangular, Blade
2.823" L x 1.693" W x 1.929" H (71.70mm x 43.00mm x 49.00mm)
PSR070FL0350Z
FUSES POWR-SPEED
Littelfuse Inc.
2
$429.95
POWR-SPEED® PSR
Bulk
Active
Holder
Square
350A
1.3 kV
1 kV
Fast Blow
Semiconductors
Indicating
-
CE, cURus, UL
-55°C ~ 125°C
100kA AC, 150kA DC
Rectangular, Blade
2.913" L x 1.693" W x 1.929" H (74.00mm x 43.00mm x 49.00mm)
PSR070FL0400Z
FUSES POWR-SPEED
Littelfuse Inc.
2
$441.20
POWR-SPEED® PSR
Bulk
Active
Holder
Square
400A
1.2 kV
900 V
Fast Blow
Semiconductors
Indicating
-
CE, cURus, UL
-55°C ~ 125°C
100kA AC, 150kA DC
Rectangular, Blade
2.913" L x 1.693" W x 1.929" H (74.00mm x 43.00mm x 49.00mm)
PSR071FS0500Z
FUSES POWR-SPEED
Littelfuse Inc.
2
$477.24
POWR-SPEED® PSR
Bulk
Active
Holder
Square
500A
1.2 kV
900 V
Fast Blow
Semiconductors
Indicating
-
CE, cURus, UL
-55°C ~ 125°C
100kA AC, 150kA DC
Rectangular, Blade
2.913" L x 2.028" W x 2.264" H (74.00mm x 51.50mm x 57.50mm)
PSR071UL0500Z
FUSES POWR-SPEED
Littelfuse Inc.
2
$473.34
POWR-SPEED® PSR
Bulk
Active
Bolt Mount
Square
500A
1.2 kV
900 V
Fast Blow
Semiconductors
Indicating
-
CE, cURus, UL
-55°C ~ 125°C
100kA AC, 150kA DC
Rectangular, Blade
2.882" L x 2.028" W x 2.264" H (73.20mm x 51.50mm x 57.50mm)
PSR071FS0550Z
FUSES POWR-SPEED
Littelfuse Inc.
3
$495.84
POWR-SPEED® PSR
Bulk
Active
Holder
Square
550A
1.2 kV
900 V
Fast Blow
Semiconductors
Indicating
-
CE, cURus, UL
-55°C ~ 125°C
100kA AC, 150kA DC
Rectangular, Blade
2.913" L x 2.028" W x 2.264" H (74.00mm x 51.50mm x 57.50mm)
PSR071UL0550Z
FUSES POWR-SPEED
Littelfuse Inc.
2
$501.60
POWR-SPEED® PSR
Bulk
Active
Bolt Mount
Square
550A
1.2 kV
900 V
Fast Blow
Semiconductors
Indicating
-
CE, cURus, UL
-55°C ~ 125°C
100kA AC, 150kA DC
Rectangular, Blade
2.882" L x 2.028" W x 2.264" H (73.20mm x 51.50mm x 57.50mm)
