j
2.7 SHORT CIRCUIT RATINGS
Short circuit ratings vary with the applied system vol
tage. On
240
VAC
systems they are also dependent upon
whether the overcurrent trip device contains an instan
taneous trip element. See Table
4.
TABLE 4 - BREAKER INTERRUPTION RATINGS
FRAME
SIZE
BREAKER
(AMPERES)
TYPE
AKA 30
800
AC
AKA 30H
AKA 50
1600
AC
AKA SOH
AKA SOH-1
AKAT 50
2000
AC
AKAT SOH
800
AKAU 30
1600
AKAU 50
800 DC
AKA 30
2000
DC
AKA 50
'With
40-800
Amp Trip Coils
'With
200-2000
Amp Trip Coils
>consult Factory For Application Data
3c/>
INTERRUPTION RATING
RATED
KA RMS SYMMETRICAL
MAXIMUM
WITH
VOLTAGE
INSTANTANEOUS INSTANTANEOUS
(60HZ AC)
TRIP
TRIP
635
508
30
30
254
42
635
508
42
42
254
635
42
42
508
50
50
254
65
635
50
50
508
65
65
254
635
508
65
65
254
635
50
50
508
65
65
254
635
508
65
65
254
600
200
200
600
300VDC
25'
300
VDC
3
SHORT
TIME
30
42
50
50
65
65
50
65
65
-
25
9
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