550 A Fuses 106

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Part RoHS Manufacturer Circuit Protection Type Mounting Feature Rated AC Voltage Rated DC Voltage Rated Current Terminal Shape Nominal Joule Integral Minimum Operating Temperature Terminal Finish Rated Breaking Capacity Manufacturer Series Trip Time/Delay Additional Features Pre Arcing Rating (A2/s) Packing Method Body Length/Diameter Body Width Fuse Class JESD-609 Code Rated Voltage Resistance Minimum Pre Arcing Time Fuse Size Built-in Features Dimensions Body Height Reference Standard Maximum Operating Temperature Blow Characteristic

PSR032UL0550X

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Tab/Blade

26.327 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.362 in (60 mm)

1.937 in (49.2 mm)

Indicator

3.736 in (94.9 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR031FS0550Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Threaded

42.056 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.028 in (51.5 mm)

1.969 in (50 mm)

Indicator

3.402 in (86.4 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR072UL0550X

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

550 A

Tab/Blade

73.858 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 1000 VDC: 150000 A

Bulk

2.882 in (73.2 mm)

2.362 in (60 mm)

Indicator

3.736 in (94.9 mm)

CUL; UL

125 °C (257 °F)

Fast

550-30R-3C-5.5S

Littelfuse

Electric Fuse

Inline/Holder

5.5 KV

550 A

End Cap

2.4 kA

Hermitically Sealed Part Number

9.75 in (247.65 mm)

9.75 x 15.875 in (247.65 x 403.23 mm)

15.875 in (403.23 mm)

Medium

PSR032US0550X

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Tab/Blade

26.327 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.362 in (60 mm)

1.937 in (49.2 mm)

Indicator

3.736 in (94.9 mm)

CUL; UL

125 °C (257 °F)

Fast

LA070URD33LI0550

Littelfuse

Electric Fuse

Inline/Holder

700 V

550 A

Tab/Blade

27 J

200 kA

2.933 in (74.5 mm)

2.933 in (74.5 mm)

Indicator

2.933 x 2.933 x 1.874 in (74.5 x 74.5 x 47.6 mm)

1.874 in (47.6 mm)

UL

Very Fast

PSX3XLDB0550X

Littelfuse

Electric Fuse

Inline/Holder

1.5 KV

550 A

Tab/Blade

142.79 kJ

-55 °C (-67 °F)

250 kA

Bulk

5.067 in (128.7 mm)

2.894 in (73.5 mm)

Indicator

2.894 in (73.5 mm)

CUL; UL

125 °C (257 °F)

Fast

LA130URD72LI0550

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

550 A

Tab/Blade

68 J

100 kA

2.362 in (60 mm)

2.362 in (60 mm)

Indicator

2.362 x 2.362 x 2.854 in (60 x 60 x 72.5 mm)

2.854 in (72.5 mm)

UL

Very Fast

PSX3XLUB0550X

Littelfuse

Electric Fuse

Inline/Holder

1.5 KV

550 A

Tab/Blade

142.79 kJ

-55 °C (-67 °F)

250 kA

Bulk

5.067 in (128.7 mm)

2.894 in (73.5 mm)

Indicator

2.894 in (73.5 mm)

CUL; UL

125 °C (257 °F)

Fast

LA070URD33KI0550

Littelfuse

Electric Fuse

Inline/Holder

700 V

550 A

Tab/Blade

27 J

200 kA

2.933 in (74.5 mm)

2.933 in (74.5 mm)

Indicator

2.933 x 2.933 x 1.874 in (74.5 x 74.5 x 47.6 mm)

1.874 in (47.6 mm)

UL

Very Fast

PSR073FS0550Z

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

550 A

Threaded

55.513 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 1000 VDC: 150000 A

Bulk

2.953 in (75 mm)

2.894 in (73.5 mm)

Indicator

4.268 in (108.4 mm)

CUL; UL

125 °C (257 °F)

Fast

PSX1XLFL0550X

Littelfuse

Electric Fuse

Inline/Holder

1.5 KV

550 A

Threaded

276.65 kJ

-55 °C (-67 °F)

250 kA

Bulk

4.988 in (126.7 mm)

2.028 in (51.5 mm)

Indicator

2.028 in (51.5 mm)

CUL; UL

125 °C (257 °F)

Fast

LA130URD72TTI0550

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

550 A

End Cap

68 J

100 kA

2.362 in (60 mm)

2.362 in (60 mm)

Indicator

2.362 x 2.362 x 2.854 in (60 x 60 x 72.5 mm)

2.854 in (72.5 mm)

UL

Very Fast

PSR033FS0550H

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Threaded

23.314 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.008 in (51 mm)

2.894 in (73.5 mm)

Indicator

3.13 in (79.5 mm)

CCC; CE; CUL; UL; IEC

125 °C (257 °F)

Fast

550-30R-3C-5.5W

Littelfuse

Electric Fuse

Inline/Holder

5.5 KV

550 A

End Cap

2.4 kA

Part Number With Hookeye Attachment

9.75 in (247.65 mm)

9.75 x 15.875 in (247.65 x 403.23 mm)

15.875 in (403.23 mm)

Medium

PSR072FS0550Z

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

550 A

Threaded

73.858 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 1000 VDC: 150000 A

Bulk

2.953 in (75 mm)

2.362 in (60 mm)

Indicator

3.736 in (94.9 mm)

CUL; UL

125 °C (257 °F)

Fast

550-30R-3C-5.5

Littelfuse

Electric Fuse

Inline/Holder

5.5 KV

550 A

End Cap

2.4 kA

15 s

9.752 in (247.7 mm)

Striker

9.75 x 15.875 in (247.65 x 403.23 mm)

15.874 in (403.2 mm)

40 °C (104 °F)

Medium

550-30R-3BI-5.5

Littelfuse

Electric Fuse

Inline/Holder

5.5 KV

550 A

Tab/Blade

80 kA

18 in (457.2 mm)

Indicator

18 x 18 in (457.2 x 457.2 mm)

18 in (457.2 mm)

Medium

LA070URD31TTI0550

Littelfuse

Electric Fuse

Inline/Holder

700 V

550 A

End Cap

52 J

200 kA

2 in (50.8 mm)

2 in (50.8 mm)

Indicator

2 x 2 x 1.929 in (50.8 x 50.8 x 49 mm)

1.929 in (49 mm)

UL

Very Fast

PSR032FS0550Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Threaded

26.327 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.362 in (60 mm)

2.008 in (51 mm)

Indicator

3.736 in (94.9 mm)

CUL; UL

125 °C (257 °F)

Fast

LA120URD71TTI0550

Littelfuse

Electric Fuse

Inline/Holder

1.2 KV

550 A

End Cap

84 J

100 kA

2.008 in (51 mm)

2.008 in (51 mm)

Indicator

2.008 x 2.008 x 2.854 in (51 x 51 x 72.5 mm)

2.854 in (72.5 mm)

UL

Very Fast

550-30R-2C-5.5W

Littelfuse

Electric Fuse

Inline/Holder

5.5 KV

550 A

End Cap

2.4 kA

Part Number With Hookeye Attachment

6.38 in (162.05 mm)

6.38 x 15.875 in (162.05 x 403.23 mm)

15.875 in (403.23 mm)

Medium

PSR073FL0550Z

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

550 A

Threaded

55.513 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 1000 VDC: 150000 A

Bulk

2.953 in (75 mm)

2.894 in (73.5 mm)

Indicator

4.268 in (108.4 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

PSR032FL0550Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Threaded

26.327 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.362 in (60 mm)

2.008 in (51 mm)

Indicator

3.736 in (94.9 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

550-30R-2C-5.5

Littelfuse

Electric Fuse

Inline/Holder

5.5 KV

550 A

End Cap

2.4 kA

15 s

6.382 in (162.1 mm)

Striker

6.38 x 15.875 in (162.05 x 403.23 mm)

15.874 in (403.2 mm)

40 °C (104 °F)

Medium

PSR033US0550X

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Tab/Blade

23.314 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.894 in (73.5 mm)

1.976 in (50.2 mm)

Indicator

4.268 in (108.4 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR071FL0550Z

Littelfuse

Electric Fuse

Inline/Holder

1.2 KV

900 V

550 A

Threaded

87.328 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 900 VDC: 150000 A

Bulk

2.913 in (74 mm)

2.028 in (51.5 mm)

Indicator

3.402 in (86.4 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR071FS0550Z

Littelfuse

Electric Fuse

Inline/Holder

1.2 KV

900 V

550 A

Threaded

87.328 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 900 VDC: 150000 A

Bulk

2.913 in (74 mm)

2.028 in (51.5 mm)

Indicator

3.402 in (86.4 mm)

CUL; UL

125 °C (257 °F)

Fast

07945825224

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Tab/Blade

26.327 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.362 in (60 mm)

1.937 in (49.2 mm)

Indicator

2.598 in (66 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR032US0550

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Tab/Blade

26.327 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.362 in (60 mm)

1.937 in (49.2 mm)

Indicator

2.598 in (66 mm)

CUL; UL

125 °C (257 °F)

Fast

07945825233

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Tab/Blade

23.314 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.894 in (73.5 mm)

1.976 in (50.2 mm)

Indicator

3.13 in (79.5 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR072UL0550

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

550 A

Tab/Blade

73.858 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 1000 VDC: 150000 A

Bulk

2.882 in (73.2 mm)

2.362 in (60 mm)

Indicator

2.598 in (66 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR030UL0550

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Tab/Blade

44.323 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

1.878 in (47.7 mm)

1.693 in (43 mm)

Indicator

1.929 in (49 mm)

CUL; UL

125 °C (257 °F)

Fast

07945825275

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Tab/Blade

26.327 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.362 in (60 mm)

1.937 in (49.2 mm)

Indicator

2.598 in (66 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR032UL0550

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Tab/Blade

26.327 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.362 in (60 mm)

1.937 in (49.2 mm)

Indicator

2.598 in (66 mm)

CUL; UL

125 °C (257 °F)

Fast

07945825284

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Tab/Blade

23.314 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.894 in (73.5 mm)

1.976 in (50.2 mm)

Indicator

3.13 in (79.5 mm)

CUL; UL

125 °C (257 °F)

Fast

07945825329

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

550 A

Tab/Blade

55.513 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 1000 VDC: 150000 A

Bulk

2.921 in (74.2 mm)

2.894 in (73.5 mm)

Indicator

3.13 in (79.5 mm)

CUL; UL

125 °C (257 °F)

Fast

07945825209

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Tab/Blade

44.323 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

1.878 in (47.7 mm)

1.693 in (43 mm)

Indicator

1.929 in (49 mm)

CUL; UL

125 °C (257 °F)

Fast

07945825268

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Tab/Blade

42.056 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.028 in (51.5 mm)

1.937 in (49.2 mm)

Indicator

2.264 in (57.5 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR033US0550

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Tab/Blade

23.314 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.894 in (73.5 mm)

1.976 in (50.2 mm)

Indicator

3.13 in (79.5 mm)

CUL; UL

125 °C (257 °F)

Fast

07945825260

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Tab/Blade

44.323 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

1.878 in (47.7 mm)

1.693 in (43 mm)

Indicator

1.929 in (49 mm)

CUL; UL

125 °C (257 °F)

Fast

07945825322

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

550 A

Tab/Blade

73.858 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 1000 VDC: 150000 A

Bulk

2.882 in (73.2 mm)

2.362 in (60 mm)

Indicator

2.598 in (66 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR033DS0550X

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Tab/Blade

23.314 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.894 in (73.5 mm)

1.976 in (50.2 mm)

Indicator

4.268 in (108.4 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

PSR032DS0550X

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Tab/Blade

26.327 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.362 in (60 mm)

1.937 in (49.2 mm)

Indicator

3.736 in (94.9 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

PSR030DL0550Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Tab/Blade

44.323 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

1.878 in (47.7 mm)

1.693 in (43 mm)

Indicator

3.067 in (77.9 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

PSR073DL0550X

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

550 A

Tab/Blade

55.513 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 1000 VDC: 150000 A

Bulk

2.921 in (74.2 mm)

2.894 in (73.5 mm)

Indicator

4.268 in (108.4 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

PSR031DL0550Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Tab/Blade

42.056 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.028 in (51.5 mm)

1.937 in (49.2 mm)

Indicator

3.402 in (86.4 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

PSR030DS0550Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Tab/Blade

44.323 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

1.878 in (47.7 mm)

1.693 in (43 mm)

Indicator

3.067 in (77.9 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

Fuses

A fuse is an electrical safety device that is designed to protect an electrical circuit from damage caused by overcurrent. Fuses are commonly used in residential, commercial, and industrial electrical systems, and they are an important safety device that helps prevent electrical fires, equipment damage, and personal injury.

A fuse typically consists of a metal wire or filament that is enclosed in a fuse body, which is designed to protect the wire from damage. The fuse is connected in series with the electrical circuit, and when the current flowing through the circuit exceeds a preset level, the wire in the fuse will melt or blow, which opens the circuit and prevents further damage to the electrical system.

Fuses are available in a variety of types and sizes, and they can be classified based on their current rating, voltage rating, and speed of operation. Some common types of fuses include cartridge fuses, blade fuses, and plug fuses.

In addition to protecting electrical systems from overcurrent, fuses can also be used to protect electrical equipment and machinery from damage caused by short circuits or other types of electrical faults. They are a cost-effective and reliable method of electrical protection, and they are widely used in a variety of electrical applications.