4.5 A Fuses 90

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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

FLSR04.5ID

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

4.5 A

End Cap

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

0.811 in (20.6 mm)

Indicator

0.811 x 5 in (20.6 x 127 mm)

5 in (127 mm)

CSA; QPL; UL

Time Delay

1206SFS450F/32

Littelfuse

Electric Fuse

Surface Mount

32 V

4.5 A

End Cap

3.6 J

-55 °C (-67 °F)

Tin Over Nickel

50 A

Rated Breaking Capacity at 32 VDC: 50 A

0.126 in (3.2 mm)

0.063 in (1.6 mm)

e3

0.126 x 0.063 x 0.038 in (3.2 x 1.6 x 0.97 mm)

0.038 in (0.97 mm)

UL

125 °C (257 °F)

Slow

LLNRK04.5

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

4.5 A

End Cap

200 kA

Rated Breaking Capacity at 125 VDC: 20000 A

0.563 in (14.3 mm)

0.563 x 2 in (14.3 x 50.8 mm)

2 in (50.8 mm)

CSA; UL

Time Delay

CCMR04.5

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

4.5 A

End Cap

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

0.406 in (10.3 mm)

0.406 x 1.5 in (10.3 x 38.1 mm)

1.5 in (38.1 mm)

CE; CSA; UL

Time Delay

IDSR4.50

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

4.5 A

200 kA

IDSR

Rated Breaking Capacity at 600 VDC; 20000

Indicator

CSA; MSHA; UL

Time Delay

FLM04.5

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

4.5 A

End Cap

10 kA

12 s

Pre Arcing Time: Open within 12 s at 200% Rated Current

Bulk

0.406 in (10.31 mm)

250 V

0.394 x 1.496 in (10 x 38 mm)

0.406 x 1.5 in (10.3 x 38.1 mm)

1.5 in (38.1 mm)

CE; CSA; QPL; UL

Time Delay

KLDR04.5TXP

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

4.5 A

End Cap

83.89 J

Nickel

200 kA

12 s

Rated Breaking Capacity at 300 VDC: 20000 A

Bulk

0.406 in (10.3 mm)

0.406 x 1.5 in (10.3 x 38.1 mm)

1.5 in (38.1 mm)

CE; CSA; UL

Time Delay

RF0449-000

Littelfuse

Electric Fuse

Surface Mount

32 V

4.5 A

Wraparound

2.63 J

50 A

RF0449-000

UL

125 °C (257 °F)

SPXI04.5LXB

Littelfuse

Electric Fuse

Inline/Holder

1.5 KV

4.5 A

End Cap

34 J

30 kA

4 m

Bulk

0.406 in (10.31 mm)

4.49 in (114.05 mm)

TUV; UL

0603SFS450F/32-2

Littelfuse

Electric Fuse

Surface Mount

32 V

4.5 A

Wraparound

2.7 J

50 A

0603SFS450F/32-2

UL

125 °C (257 °F)

Slow

SPXV04.5LXS

Littelfuse

Electric Fuse

Inline/Holder

1.5 KV

4.5 A

End Cap

34 J

30 kA

4 m

Bulk

0.406 in (10.31 mm)

3.333 in (84.65 mm)

CE; CUL; IEC; UL

Fast

SPXV04.5T

Littelfuse

Electric Fuse

Inline/Holder

1.5 KV

4.5 A

End Cap

34 J

30 kA

4 m

Bulk

0.406 in (10.31 mm)

GPV

1.5 KV

0.394 x 3.346 in (10 x 85 mm)

3.333 in (84.65 mm)

CUL; TUV; UL

Fast

067404.5DRT4

Littelfuse

Electric Fuse

Through Hole Mount

250 V

4.5 A

Pin Wire

9.58 J

Tin Lead

50 A

4 h

9.5

Tape And Reel

0.154 in (3.9 mm)

e0

250 V

0.154 x 0.433 in (3.9 x 11 mm)

0.433 in (11 mm)

CSA; UL

Fast

1206SFS450FM/32

Littelfuse

Electric Fuse

Surface Mount

32 V

4.5 A

End Cap

-55 °C (-67 °F)

Tin Over Nickel

Rated Breaking Capacity at 32 VDC: 50 A

0.134 in (3.4 mm)

0.071 in (1.8 mm)

e3

0.134 x 0.071 x 0.046 in (3.4 x 1.8 x 1.17 mm)

0.046 in (1.17 mm)

UL

125 °C (257 °F)

Slow

IDSR04.5ID

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

4.5 A

200 kA

IDSR

Rated Breaking Capacity at 600 VDC: 20000 A

Indicator

CSA; UL

Time Delay

SPXV04.5TXS

Littelfuse

Electric Fuse

Inline/Holder

1.5 KV

4.5 A

End Cap

34 J

30 kA

4 m

Bulk

0.406 in (10.31 mm)

3.333 in (84.65 mm)

CE; CUL; IEC; UL

Fast

KLDR04.5HXP

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

4.5 A

End Cap

83.89 J

Nickel

200 kA

12 s

Rated Breaking Capacity at 300 VDC: 20000 A

Bulk

0.406 in (10.3 mm)

0.406 x 1.5 in (10.3 x 38.1 mm)

1.5 in (38.1 mm)

CE; CSA; UL

Time Delay

067204.5MXE

Littelfuse

Electric Fuse

Through Hole Mount

250 V

4.5 A

Pin Wire

9.77 J

Tin Lead

50 A

5 s

Pre Arcing Time: Open within 5 s at 200% Rated Current

9.77

Bulk

0.154 in (3.9 mm)

e0

250 V

0.142 x 0.394 in (3.6 x 10 mm)

0.154 x 0.433 in (3.9 x 11 mm)

0.433 in (11 mm)

CSA; UL

Fast

SPXI04.5TXB

Littelfuse

Electric Fuse

Inline/Holder

1.5 KV

4.5 A

End Cap

34 J

30 kA

4 m

Bulk

0.406 in (10.31 mm)

4.49 in (114.05 mm)

TUV; UL

7945894979

Littelfuse

Electric Fuse

Inline/Holder

500 V

300 V

4.5 A

Tab/Blade

-55 °C (-67 °F)

10 kA

Rated Breaking Capacity at 300 VDC: 10000 A

Bulk

0.406 in (10.31 mm)

0.394 x 1.496 in (10 x 38 mm)

1.5 in (38.1 mm)

CE, UL

125 °C (257 °F)

Time Delay

FLQ41/2

Littelfuse

Electric Fuse

Inline/Holder

500 V

4.5 A

End Cap

10 kA

0.406 in (10.31 mm)

0.406 x 1.5 in (10.31 x 38.1 mm)

1.5 in (38.1 mm)

CSA; UL

Slow

067404.5MXE

Littelfuse

Electric Fuse

Through Hole Mount

250 V

4.5 A

Pin Wire

9.58 J

Tin Lead

50 A

4 h

9.5

Bulk

0.154 in (3.9 mm)

e0

250 V

0.154 x 0.433 in (3.9 x 11 mm)

0.433 in (11 mm)

CSA; UL

Fast

JTD04.5

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

4.5 A

End Cap

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

Bulk

0.811 in (20.6 mm)

2.252 in (57.2 mm)

CSA; UL

Time Delay

0603SFP450F/32

Littelfuse

Electric Fuse

Surface Mount

32 V

4.5 A

Wraparound

2.63 J

-55 °C (-67 °F)

50 A

0.069 in (1.75 mm)

0.037 in (0.95 mm)

200 µs

0603

0.037 in (0.95 mm)

UL

125 °C (257 °F)

A41268-000

Littelfuse

Electric Fuse

Surface Mount

32 V

4.5 A

Wraparound

3.6 J

50 A

UL

125 °C (257 °F)

Slow

RF0460-000

Littelfuse

Electric Fuse

Surface Mount

32 V

4.5 A

Wraparound

3.2 J

50 A

RF0460-000

UL

125 °C (257 °F)

RF0349-000

Littelfuse

Electric Fuse

Surface Mount

32 V

4.5 A

Wraparound

2.7 J

50 A

UL

125 °C (257 °F)

Slow

FLQ04.5

Littelfuse

Electric Fuse

Inline/Holder

500 V

300 V

4.5 A

End Cap

10 kA

0.406 in (10.31 mm)

0.394 x 1.496 in (10 x 38 mm)

1.5 in (38.1 mm)

CSA; UL

Time Delay

087404.5MRET1P

Littelfuse

Electric Fuse

4.5 A

Pin Wire

-55 °C (-67 °F)

50 A

4 h

14.42

Tape And Reel

0.142 in (3.6 mm)

250 V

0.142 x 0.394 in (3.6 x 10 mm)

0.394 in (10 mm)

UL

125 °C (257 °F)

Fast

FLSR4.5ID

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

4.5 A

End Cap

200 kA

0.811 in (20.6 mm)

Indicator

0.811 x 5 in (20.6 x 127 mm)

5 in (127 mm)

CSA; UL

Time Delay

KLDR04.5T

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

4.5 A

End Cap

200 kA

KLDR

Rated Breaking Capacity at 300 VDC: 20000 A

Bulk

0.406 in (10.3 mm)

0.406 x 1.5 in (10.3 x 38.1 mm)

1.5 in (38.1 mm)

CSA; UL

Time Delay

087404.5MXEP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

4.5 A

Pin Wire

14.42 J

-55 °C (-67 °F)

Tin

50 A

4 h

14.42

Bulk

0.142 in (3.6 mm)

e3

250 V

0.142 x 0.394 in (3.6 x 10 mm)

0.394 in (10 mm)

UL

125 °C (257 °F)

Fast

SPXI04.5L

Littelfuse

Electric Fuse

Inline/Holder

1.5 KV

4.5 A

End Cap

34 J

30 kA

4 m

Bulk

0.406 in (10.31 mm)

4.333 in (110.06 mm)

CUL; TUV; UL

SPXI04.5T

Littelfuse

Electric Fuse

Inline/Holder

1.5 KV

4.5 A

End Cap

34 J

30 kA

4 m

Bulk

0.406 in (10.31 mm)

4.333 in (110.06 mm)

CUL; TUV; UL

FLNR04.5T

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

4.5 A

End Cap

200 kA

Rated Breaking Capacity at 125 VDC: 20000 A

Bulk

0.563 in (14.3 mm)

2 in (50.8 mm)

CSA; UL

Time Delay

FLA04.5

Littelfuse

Electric Fuse

Inline/Holder

125 V

4.5 A

End Cap

10 kA

12 s

Bulk

0.406 in (10.31 mm)

5AG

Indicator

1.5 in (38.1 mm)

UL

Time Delay

0FLA04.5T

Littelfuse

Electric Fuse

Inline/Holder

125 V

4.5 A

End Cap

10 kA

12 s

Bulk

0.406 in (10.31 mm)

5AG

Indicator

1.5 in (38.1 mm)

UL

Time Delay

FLSR04.5TXID

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

4.5 A

End Cap

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

Bulk

0.815 in (20.7 mm)

Indicator

5 in (127 mm)

CSA; UL

Time Delay

67204.5MXE

Littelfuse

Electric Fuse

Through Hole Mount

250 V

4.5 A

Pin Wire

9.77 J

50 A

5 s

Bulk

0.154 in (3.9 mm)

0.142 x 0.394 in (3.6 x 10 mm)

0.433 in (11 mm)

CSA; UL

Fast

0FLM04.5T

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

4.5 A

End Cap

10 kA

12 s

Pre Arcing Time: Open within 12 s at 200% Rated Current

Bulk

0.406 in (10.31 mm)

0.394 x 1.496 in (10 x 38 mm)

1.5 in (38.1 mm)

CE; CSA; QPL; UL

Time Delay

LLSRK04.5.TXID

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

4.5 A

End Cap

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

0.811 in (20.6 mm)

Indicator

5 in (127 mm)

CE; CSA; UL; QPL

Time Delay

LLNRK04.5.V

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

4.5 A

End Cap

200 kA

Rated Breaking Capacity at 125 VDC: 20000 A

0.563 in (14.3 mm)

2 in (50.8 mm)

CE; CSA; UL; QPL

Time Delay

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.