Littelfuse CA Varistor Series - Manual (Page 3)

© 2013 Littelfuse, Inc. 183
Revised: May 8, 2013
Varistor Products
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.
HI–ENERGY
MO
V’S
CA Series
MAX CLAMPING VOLTAGE
DISC SIZE 60mm
250 TO 880V
M(AC) RATING
T A = -55 o C TO 85 o C
6,000
5,000
4,000
3,000
2,000
1,000
900
800
700
600
500
400
300
200
10 -2 10 -1 10 0 10 1 10 2 10 3 10 4 10 5
PEAK AMPERES (A)
V881CA60
V751CA60
V661CA60
V571CA60
MAXIMUM PEAK
V
O
L
TS (V)
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
10 -2 10 -1 10 0 10 1 10 2 10 3 10 4 10 5
PEAK AMPERES (A)
MAX PEAK
V
O
L
TS (V)
V282CA60
V242CA60
V202CA60
V172CA60
V142CA60
V112CA60
MAX CLAMPING VOLTAGE
DISC SIZE 60mm
1100 TO 2800V
M(AC) RATING
T A = -55 o C TO 85 o C
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
10 2
10 3
INDEFINITE
10 6
20 100
2
DISC SIZE 60mm
V251CA60 - V321CA60 1
SURGE CURRENT (A)
10 5
10 4
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
10 2
10 3
10 6
2
1 DISC SIZE 60mm
V421CA60 - V282CA60
INDEFINITE
SURGE CURRENT (A)
10 4
10 5
NOTE: If pulse ratings are exceeded, a shift of V
N(DC)
(at specified current) of more than
+/-10% could result. This type of shift, which normally results in a decrease of V
N(DC)
, may
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