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Varistor Products

Revision: September 3, 2009

©2009 Littelfuse, Inc.

CA Varistor Series

High Energy Industrial Disc Varistors > CA Series

Specifications are subject to change without notice.

Please refer to www.littelfuse.com/series/ca.html for current information.

MAX CLAMPING VOLTAGE

DISC SIZE 60mm

6,000

5,000

4,000

3,000

2,000

1,000

900

800

700

600

500

400

300

200

PEAK AMPERES (A)

V881CA60

V751CA60

V661CA60

V571CA60

V511CA60

V481CA60

V421CA60

V321CA60

V271CA60

V251CA60

Maximum Clamping Voltage for 60mm Parts

V112CA60 - V282CA60

30,000

20,000

10,000

9,000

8,000

7,000

6,000

5,000

4,000

3,000

2,000

PEAK AMPERES (A)

V282CA60

V242CA60

V202CA60

V172CA60

V142CA60

V112CA60

MAX CLAMPING VOLTAGE

DISC SIZE 60mm

V251CA60 - V881CA60

Repetitive Surge Capability for 60mm Parts

V251CA60 - V321CA60

50,000

20,000

10,000

5,000

2,000

1,000

500

200

100

50

20

10

IMPULSE DURATION (μs)

1,000

10,000

10

INDEFINITE

20

100

2

DISC SIZE 60mm

V251CA60 - V321CA60

1

V421CA60 - V282CA60

100,000

50,000

20,000

10,000

5,000

2,000

1,000

500

200

100

50

20

10

20

100

1,000

10,000

IMPULSE DURATION (μs)

10

2

1

DISC SIZE 60mm

V421CA60 - V282CA60

INDEFINITE

NOTE: If pulse ratings are exceeded, a shift of V

+/-10% could result. This type of shift, which normally results in a decrease of V

result in the device not meeting the original published specifications, but does not prevent

the device from continuing to function, and to provide ample protection.

Figure 3

Figure 4

Figure 5

Figure 6