Littelfuse.com/PSR

© 2022 Littelfuse, Inc.

Rev: 042722

20 of 20

PSR SERIES HIGH-SPEED SQUARE BODY

- THIS DATA IS GENERATED IN EXCEL -

BASIS FOR DATA:

TEST VOLTAGE:

TIME CONSTANT/POWER FACTOR:

FUSE CATALOG NUMBER:

DRAWN BY:

DATE:

REVISION:

DRAWING NO.:

SHEET

TEMPERATURE RE-RATING CURVE

LITTELFUSE, INC.

CHICAGO, IL. USA

LLL

04/04/2017

A

2 OF 2

FCC11-PSR

PSR Series

0

20%

140°C

284°F

0

20%

120°C

248°F

80°C

176°F

40°C

104°F

-20°C

-4°F

-40°C

-40°F

-60°C

-76°F

40%

0°C

32°F

20°C

68°F

100°C

212°F

60°C

140°F

AMBIENT TEMPERATURE

10%

30%

10%

30%

50%

Temperature Derating Curve

(temperature of air immediately surrounding fuse)

- THIS DATA IS GENERATED IN EXCEL -

1

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

1

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

BASIS FOR DATA:

TEST VOLTAGE:

TIME CONSTANT/POWER FACTOR:

FUSE CATALOG NUMBER:

DRAWN BY:

DATE:

REVISION:

DRAWING NO.:

SHEET

I2T CORRECTION FACTOR

LITTELFUSE, INC.

CHICAGO, IL. USA

LLL

01/26/2015

A

3 OF 3

FCC0-

L50S 35-800A

PERCENT OF RATED CURRENT(%)

BASIS FOR DATA:

TEST VOLTAGE:

TIME CONSTANT/POWER FACTOR:

FUSE CATALOG NUMBER:

DRAWN BY:

DATE:

REVISION:

DRAWING NO.:

SHEET

DERATING CURVE - WATTS LOSS CORRECTION

LITTELFUSE, INC.

CHICAGO, IL. USA

LLL

03/20/2017

A

2 OF 2

FCC08-PSR

PSR Series

Watts Loss Correction Factor Curve

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their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/product-disclaimer.