littelfuse.com

Rev: 030915

3 of 3

1000

900

800

700

600

500

1000

900

800

700

600

500

- 2A

500

400

300

200

100

90

80

70

500

400

300

200

100

90

80

70

- 2.5A

- 3A

- 3.5A

- 4A

- 5A

- 6A

60

50

40

30

20

10

9

60

50

40

30

20

10

9

- 8A

- 10A

- 12A

9

8

7

6

5

4

3

2

9

8

7

6

5

4

3

2

1

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

1

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0.09

0.08

0.07

0.06

0.05

0.04

0.03

0.1

0.09

0.08

0.07

0.06

0.05

0.04

0.03

0.02

0.01

0.02

0.01

CURRENT IN AMPERES

BASIS FOR DATA:

TEST VOLTAGE: 1000V

TIME CONSTANT/POWER FACTOR:

FUSE CATALOG NUMBER:

DRAWN BY:

DATE:

REVISION:

DRAWING NO.:

SHEET

TIME CURRENT CHARACTERISTIC CURVES

LITTELFUSE, INC.

CHICAGO, IL. USA

LLL

08/10/2012

C

2 OF 2

FCC01-SPFI000

SPFI 2A - 30A

- DATA GENERATED IN EXCEL -

1000

900

800

700

600

500

1000

900

800

700

600

500

500

400

300

200

100

90

80

70

500

400

300

200

100

90

80

70

60

50

40

30

20

10

9

60

50

40

30

20

10

9

- 15A

- 20A

- 25A

- 30A

9

8

7

6

5

4

3

2

9

8

7

6

5

4

3

2

1

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

1

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0.09

0.08

0.07

0.06

0.05

0.04

0.03

0.1

0.09

0.08

0.07

0.06

0.05

0.04

0.03

0.02

0.01

0.02

0.01

CURRENT IN AMPERES

BASIS FOR DATA:

TEST VOLTAGE: 1000V

TIME CONSTANT/POWER FACTOR:

FUSE CATALOG NUMBER:

DRAWN BY:

DATE:

REVISION:

DRAWING NO.:

SHEET

TIME CURRENT CHARACTERISTIC CURVES

LITTELFUSE, INC.

CHICAGO, IL. USA

LLL

08/10/2012

C

2 OF 2

FCC01-SPFI000

SPFI 2A - 30A

- DATA GENERATED IN EXCEL -

Time Current Curve (2-12 A)

Time Current Curve (15-30 A)

Electrical Specification —

Agency Requirements

-60°C

-40°C

-20°C

0°C

20°C

40°C

60°C

80°C

100°C

120°C

140°C

-76°F

-40°F

-4°F

32°F

68°F

104°F

140°F

176°F

212°F

248°F

284°F

AMBIENT TEMPERATURE

60

40

20

0

0

20

40

60

Temperature Rerating Curve

(Temperature of Air Immediately Surrounding Fuse)

OPENING TIME (MINUTES)

100% of

Amp Rating

per UL

113% of

Amp Rating

per IEC

135% of

Amp Rating

per UL

145% of

Amp Rating

per IEC

200% of

Amp Rating

per UL

2-30 Temperature

Stabilization

60 Min

60 Max

60 Max

4 Max

SPFI SERIES IN-LINE SOLAR FUSE