© 2012 Littelfuse, Inc.

Specifications are subject to change without notice.

Axial Lead & Cartridge Fuses

251/253 Series

Please refer to www.littelfuse.com/series/251.html

or /253.html for current information.

Ampere

Rating

(A)

Amp

Code

Ordering

Number

(Std.)

Ordering

Number

(Mil.)

Max

Voltage

Rating

(V)

Interrupting

Rating

Nominal

Cold

Resistance

(Ohms)

Nominal

Melting

Nom

Voltage

Drop

(V)

Agency Approvals

PS

E

TUV

QPL

.062

.062

251.062

253.062

125

300 A @ rated

50 A @ rated

For CCC 7A:

70 A @ rated

For CCC 10A:

100 A @ rated

7.000

0.000113

1.4

x

x

x

.125

.125

251.125

253.125

125

1.700

0.00174

0.285

x

x

x

.250

.250

251.250

253.250

125

0.665

0.0116

0.24

x

x

x

.375

.375

251.375

253.375

125

0.395

0.0296

0.215

x

x

x

.500

.500

251.500

253.500

125

0.280

0.0598

0.2165

x

x

x

x

x

.630

.630

251.630

125

0.205

0.094

0.188

x

x

.750

.750

251.750

253.750

125

0.175

0.153

0.176

x

x

x

x

1.00

001.

251001.

253001.

125

0.128

0.256

0.194

x

x

x

x

x

x

1.25

1.25

2511.25

125

0.100

0.390

0.2

x

x

x

1.50

01.5

25101.5

25301.5

125

0.0823

0.587

0.21

x

x

x

x

x

2.00

002.

251002.

253002.

125

0.0473

0.405

0.141

x

x

x

x

x

x

2.50

02.5

25102.5

125

0.0360

0.721

0.132

x

x

x

x

x

3.00

003.

251003.

253003.

125

0.0290

1.19

0.131

x

x

x

x

x

x

3.50

03.5

25103.5

125

0.0240

1.58

0.1205

x

x

x

x

4.00

004.

251004.

253004.

125

0.0204

2.45

0.114

x

x

x

x

x

x

5.00

005.

251005.

253005.

125

0.0155

4.14

0.11

x

x

x

x

x

x

7.00

007.

251007.

253007.

125

0.0105

10.4

0.102

x

x

x

x

10.0

010.

251010.

253010.

125

0.00705

25.5

0.1

x

x

x

x

12.0

012.

251012.

32

0.0055

45.2

0.0878

x

x

15.0

015.

251015.

253015.

32

0.00446

68.8

0.071

x

x

x

Electrical Specifications by Item

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