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

59304.5

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 V

4.5 A

End Cap

Nickel

593

1206SFP450F/32

Littelfuse

Electric Fuse

Surface Mount

32 V

4.5 A

Wraparound

3.2 J

50 A

0.134 in (3.4 mm)

0.071 in (1.8 mm)

200 µs

1206

0.046 in (1.17 mm)

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

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

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

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

LLSRK04.5ID

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; UL

Time Delay

FLQ04.5T

Littelfuse

Electric Fuse

Inline/Holder

500 V

300 V

4.5 A

End Cap

-55 °C (-67 °F)

10 kA

0.406 in (10.31 mm)

500 V

Midget

0.406 x 1.5 in (10.31 x 38.1 mm)

1.5 in (38.1 mm)

CSA, UL

125 °C (257 °F)

Time Lag

IDSR04.5T

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

4.5 A

End Cap

200 kA

Rated Breaking Capacity at 600 VDC: 20000 A

Bulk

0.815 in (20.7 mm)

5 in (127 mm)

CSA; UL

Time Delay

0603SFV450F/32-2

Littelfuse

Electric Fuse

Surface Mount

32 V

4.5 A

Wraparound

1.68 J

-55 °C (-67 °F)

35 A

4 h

1.68

0.069 in (1.75 mm)

0.037 in (0.95 mm)

32 V

0603

0.069 x 0.037 x 0.019 in (1.75 x 0.95 x 0.48 mm)

0.019 in (0.48 mm)

UL

125 °C (257 °F)

Very Fast

FLA4-1/2

Littelfuse

Electric Fuse

Inline/Holder

125 V

4.5 A

End Cap

10 kA

0.406 in (10.31 mm)

Indicator

0.406 x 1.5 in (10.31 x 38.1 mm)

1.5 in (38.1 mm)

UL

Slow

0603SFV450F/32

Littelfuse

Electric Fuse

Surface Mount

32 V

4.5 A

Wraparound

35 A

0.069 in (1.75 mm)

0.037 in (0.95 mm)

1 ms

0603

0.019 in (0.48 mm)

UL

Very Fast

JTD04.5ID

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

4.5 A

End Cap

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

Bulk

0.811 in (20.6 mm)

Indicator

0.811 x 2.252 in (20.6 x 57.2 mm)

2.252 in (57.2 mm)

CSA; UL

Time Delay

040704.5WR

Littelfuse

Electric Fuse

Surface Mount

32 V

32 V

4.5 A

Wraparound

5.2 J

-55 °C (-67 °F)

50 A

2 ms

Tape And Reel

0.126 in (3.2 mm)

0.064 in (1.63 mm)

32 V

20 mΩ

1206

0.033 in (0.835 mm)

UL

150 °C (302 °F)

Time Lag

067404.5

Littelfuse

Electric Fuse

Through Hole Mount

250 V

4.5 A

Pin Wire

9.58 J

Tin Lead

50 A

674

0.154 in (3.9 mm)

e0

0.154 x 0.433 in (3.9 x 11 mm)

0.433 in (11 mm)

CSA; UL

Fast

FLM41/2

Littelfuse

Electric Fuse

Inline/Holder

250 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; QPL; UL

Slow

RF1569-000

Littelfuse

Electric Fuse

Surface Mount

32 V

4.5 A

Wraparound

1.68 J

35 A

UL

125 °C (257 °F)

Very Fast

7945816054

Littelfuse

Electric Fuse

Inline/Holder

500 V

300 V

4.5 A

End Cap

-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)

CSA; UL

125 °C (257 °F)

Time Delay

040704.5WRA

Littelfuse

Electric Fuse

Surface Mount

32 V

4.5 A

Wraparound

5.2 J

-55 °C (-67 °F)

50 A

50 ms

Tape And Reel

0.126 in (3.2 mm)

0.064 in (1.63 mm)

1206

0.033 in (0.835 mm)

AEC-Q200; CUL; UL

150 °C (302 °F)

TOO4.50

Littelfuse

Electric Fuse

Inline/Holder

125 V

4.5 A

End Cap

10 kA

UL

Time Delay

FLNR4.5ID

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

4.5 A

End Cap

200 kA

0.563 in (14.3 mm)

Indicator

0.563 x 2 in (14.3 x 50.8 mm)

2 in (50.8 mm)

CSA; UL

Time Delay

FLNR04.5

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

4.5 A

End Cap

200 kA

Rated Breaking Capacity at 125 VDC: 20000 A

Bulk

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

FLSR4.50

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

4.5 A

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

CSA; UL

Time Delay

067204.5

Littelfuse

Electric Fuse

Through Hole Mount

250 V

4.5 A

Pin Wire

9.77 J

Tin Lead

50 A

0672

0.154 in (3.9 mm)

e0

0.154 x 0.433 in (3.9 x 11 mm)

0.433 in (11 mm)

CSA; UL

Fast

FLQ04.5R

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

067204.5DRT4

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

Tape And Reel

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

CCMR04.5HXP

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

0.406 in (10.3 mm)

600 V

0.406 x 1.5 in (10.3 x 38.1 mm)

1.5 in (38.1 mm)

CE; CSA; UL

Time Delay

FLNR4.50

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

4.5 A

200 kA

Rated Breaking Capacity at 125 VDC: 20000 A

CSA; UL

Time Delay

1206SFS450F/32-2

Littelfuse

Electric Fuse

Surface Mount

32 V

4.5 A

Wraparound

3.6 J

50 A

1206SFS450F/32-2

UL

125 °C (257 °F)

Slow

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

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

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.