1.25 kA Fuses 40

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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

E300453

Mersen S A

Electric Fuse

Panel Mount

690 V

1.25 kA

Threaded

355 kJ

200 kA

Bulk

1.992 in (50.6 mm)

2.874 in (73 mm)

33

Indicator

3.091 in (78.5 mm)

CCC; CE; CSA; EAC; IEC; UL; VDE

Ultra Fast

170M8554D

Eaton Corporation

Electric Fuse

Inline/Holder

690 V

1.25 kA

Tab/Blade

2.15 MJ

200 kA

3.425 in (87 mm)

2.795 in (71 mm)

Indicator

3.425 x 2.795 x 2.677 in (87 x 71 x 68 mm)

2.677 in (68 mm)

CE; CSA; IEC; UL

1250NHG4G

Eaton Corporation

Electric Fuse

Inline/Holder

500 V

1.25 kA

Tab/Blade

7 MJ

120 kA

Box

3.543 in (90 mm)

3.425 in (87 mm)

NH4

Indicator

4.016 in (102 mm)

CE; DIN; IEC; VDE

170M8612

Eaton Corporation

Electric Fuse

Inline/Holder

1 KV

1.25 kA

575 kJ

150 kA

170M

3.161 in (80.3 mm)

2.913 in (74 mm)

Indicator

3.161 x 2.913 x 3.622 in (80.3 x 74 x 92 mm)

3.622 in (92 mm)

CE; IEC; UL

GH1250

Eaton Corporation

Electric Fuse

Inline/Holder

550 V

1.25 kA

Tab/Blade

14 kJ

80 kA

Box

3.937 in (100 mm)

3.937 x 3.189 in (100 x 81 mm)

3.189 in (81 mm)

IEC

PSX3XLUB1250X

Littelfuse

Electric Fuse

Inline/Holder

1.5 KV

1.25 kA

Tab/Blade

995.376 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

170M5468

Eaton Corporation

Electric Fuse

Inline/Holder

700 V

1.25 kA

Tab/Blade

365 kJ

200 kA

Box

2.402 in (61 mm)

2.402 in (61 mm)

Indicator

2.402 x 2.402 x 1.969 in (61 x 61 x 50 mm)

1.969 in (50 mm)

CE; IEC; UL

170M6116

Eaton Corporation

Electric Fuse

Inline/Holder

700 V

1.25 kA

Tab/Blade

290 kJ

200 kA

Box

2.008 in (51 mm)

2.992 in (76 mm)

Indicator

2.008 x 2.992 x 2.992 in (51 x 76 x 76 mm)

2.992 in (76 mm)

CE; DIN 43653; IEC; UL

LA100URD73TTI1250

Littelfuse

Electric Fuse

Inline/Holder

1 KV

1.25 kA

End Cap

585 J

100 kA

LA

Indicator

UL

Very Fast

170M6466

Eaton Corporation

Electric Fuse

Inline/Holder

700 V

1.25 kA

Tab/Blade

290 kJ

200 kA

Box

2.992 in (76 mm)

2.992 in (76 mm)

Indicator

2.992 x 2.992 x 2.008 in (76 x 76 x 51 mm)

2.008 in (51 mm)

CE; IEC; UL

LA070URD33TTI1250

Littelfuse

Electric Fuse

Inline/Holder

700 V

1.25 kA

End Cap

350 J

200 kA

2.933 in (74.5 mm)

2.933 in (74.5 mm)

Indicator

2.933 x 2.933 x 1.929 in (74.5 x 74.5 x 49 mm)

1.929 in (49 mm)

UL

Very Fast

PSR033FL1250H

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

1.25 kA

Threaded

476.902 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

PSR033FS1250Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

1.25 kA

Threaded

476.902 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.894 in (73.5 mm)

2.008 in (51 mm)

Indicator

4.268 in (108.4 mm)

CUL; UL

125 °C (257 °F)

Fast

PSX3XLDB1250X

Littelfuse

Electric Fuse

Inline/Holder

1.5 KV

1.25 kA

Tab/Blade

995.376 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

PSR033FL1250Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

1.25 kA

Threaded

476.902 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.894 in (73.5 mm)

2.008 in (51 mm)

Indicator

4.268 in (108.4 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

LA060URD32TTI1250

Littelfuse

Electric Fuse

Inline/Holder

600 V

1.25 kA

End Cap

410 J

200 kA

2.374 in (60.3 mm)

2.374 in (60.3 mm)

Indicator

2.374 x 2.374 x 1.929 in (60.3 x 60.3 x 49 mm)

1.929 in (49 mm)

UL

Very Fast

LA100URD73LI1250

Littelfuse

Electric Fuse

Inline/Holder

1 KV

1.25 kA

Tab/Blade

585 J

100 kA

LA

Indicator

UL

Very Fast

LA060URD32LI1250

Littelfuse

Electric Fuse

Inline/Holder

600 V

1.25 kA

Tab/Blade

410 J

200 kA

LA

Indicator

UL

Very Fast

LA070URD33KI1250

Littelfuse

Electric Fuse

Inline/Holder

700 V

1.25 kA

Tab/Blade

350 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

PSR033UL1250X

Littelfuse

Electric Fuse

Inline/Holder

700 V

500 V

1.25 kA

Tab/Blade

476.902 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 500 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

LA070URD33LI1250

Littelfuse

Electric Fuse

Inline/Holder

700 V

1.25 kA

Tab/Blade

350 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

PSX3XLFL1250X

Littelfuse

Electric Fuse

Inline/Holder

1.5 KV

1.25 kA

Threaded

995.376 kJ

-55 °C (-67 °F)

250 kA

Bulk

5.043 in (128.1 mm)

2.894 in (73.5 mm)

Indicator

2.894 in (73.5 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR033US1250X

Littelfuse

Electric Fuse

Inline/Holder

700 V

500 V

1.25 kA

Tab/Blade

476.902 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 500 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

PSR033FS1250H

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

1.25 kA

Threaded

476.902 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

PSR032FS1250Z

Littelfuse

Electric Fuse

Inline/Holder

600 V

550 V

1.25 kA

Threaded

336.661 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 550 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

PSR032US1250X

Littelfuse

Electric Fuse

Inline/Holder

600 V

550 V

1.25 kA

Tab/Blade

336.661 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 550 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

PSR032UL1250X

Littelfuse

Electric Fuse

Inline/Holder

600 V

550 V

1.25 kA

Tab/Blade

336.661 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 550 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

PSR032FL1250Z

Littelfuse

Electric Fuse

Inline/Holder

600 V

550 V

1.25 kA

Threaded

336.661 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 550 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

PSR033US1250

Littelfuse

Electric Fuse

Inline/Holder

700 V

500 V

1.25 kA

Tab/Blade

476.902 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 500 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

07945825291

Littelfuse

Electric Fuse

Inline/Holder

700 V

500 V

1.25 kA

Tab/Blade

476.902 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 500 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

PSR033UL1250

Littelfuse

Electric Fuse

Inline/Holder

700 V

500 V

1.25 kA

Tab/Blade

476.902 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 500 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

PSR073UL1250X

Littelfuse

Electric Fuse

Inline/Holder

1 KV

1.25 kA

Tab/Blade

993.924 kJ

-55 °C (-67 °F)

100 kA

Bulk

2.921 in (74.2 mm)

2.894 in (73.5 mm)

Indicator

4.268 in (108.4 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR073FS1250Z

Littelfuse

Electric Fuse

Inline/Holder

1 KV

1.25 kA

Threaded

993.924 kJ

-55 °C (-67 °F)

100 kA

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

PSR073FL1250Z

Littelfuse

Electric Fuse

Inline/Holder

1 KV

1.25 kA

Threaded

993.924 kJ

-55 °C (-67 °F)

100 kA

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

PSR033DL1250X

Littelfuse

Electric Fuse

Inline/Holder

700 V

500 V

1.25 kA

Tab/Blade

476.902 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 500 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

PSR032DS1250X

Littelfuse

Electric Fuse

Inline/Holder

600 V

550 V

1.25 kA

Tab/Blade

336.661 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 550 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

PSR032DL1250X

Littelfuse

Electric Fuse

Inline/Holder

600 V

550 V

1.25 kA

Tab/Blade

336.661 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 550 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

PSR073DL1250X

Littelfuse

Electric Fuse

Inline/Holder

1 KV

1.25 kA

Tab/Blade

993.924 kJ

-55 °C (-67 °F)

100 kA

Bulk

2.921 in (74.2 mm)

2.894 in (73.5 mm)

Indicator

4.268 in (108.4 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR033DS1250X

Littelfuse

Electric Fuse

Inline/Holder

700 V

500 V

1.25 kA

Tab/Blade

476.902 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 500 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

07945825240

Littelfuse

Electric Fuse

Inline/Holder

700 V

500 V

1.25 kA

Tab/Blade

476.902 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 500 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

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.