2

Technical Data

10572

Effective June 2017

1025HC

Fast-acting, high current, surface mount ceramic tube fuses

www.eaton.com/electronics

Electrical characteristics

% of Amp Rating

Opening Time

100

4 hours minimum

200

60 s maximum

Product specifications

Current

rating

(A)

Voltage

rating

(V

Voltage

rating

(V

Interrupting

rating at rated

voltage

(A

Interrupting

rating at rated

(A

Typical DC

(mW )

Typical

Part marking

cURus

PSE

1025HC20-R

20

250

72

100

500

3.1

25

<PS> E JET

BUSS 20A

x

x

1025HC25-R

25

250

72

100

500

2.6

50

<PS> E JET

BUSS 25A

x

x

1025HC30-R

30

250

72

100

500

1.7

112

<PS> E JET

BUSS 30A

x

x

1025HC40-R

40

250

72

300

500

1.3

400

BUSS 40A

x

1025HC50-R

50

250

60

300

600

1.1

600

BUSS 50A

x

1 DC interrupting rating measured at rated voltage, time constant of less than 1.0 microseconds, battery source

2 Typical DC cold resistance measured at <10% of rated current at an ambient temperature of 20 °C (reference only)

3. Typical melting I²t value is measured at 10In rated current

4. Part number definition: 1025HCxx-R

1025HC= Product code and size

xx= Ampere rating

-R= Rohs compliant

Dimensions (mm)

Rating

A

B

C

20 A to 30 A

10.0 ±0.50

3.15 ±0.15

1.70 ±0.15

40 A to 50 A

12.4 ±0.50

4.50 ±0.15

2.70 ±0.15

Recommended pad layout (mm)

Recommended trace thickness is 3 oz.

Recommended min-trace width is 10 mm (20 A to 30 A) and 15 mm (40 A to 50 A)

20 A to 30 A

40 A to 50 A