Bulletin 1492-MC
Circuit Breaker
Product Description
Time Current Curve – 3-Pole Circuit Breakers
0
1
Time Current Curve
1492-MCAA3NN
1492-MCBA3NN
3-pole Circuit Breakers
CURRENT IN PERCENT OF BREAKER TRIP UNIT RATING
10,000
5,000
10,000
5,000
— 40ºC Ambient
— 4 ft 60º/75ºC Wire per Terminal
— Open Air
3,000
2,000
3,000
2,000
2
— Current in All Phases
1,000
500
1,000
500
3
300
200
300
200
4
100
50
100
50
5
30
20
30
20
Minimum
Maximum
10
5
10
5
6
3
2
3
2
7
1
1
.5
.5
8
.3
.2
.3
.2
9
.1
.1
.05
.05
.03
.02
.03
.02
10
11
12
13
Maximum Interuppting Time
.01
.01
.005
.005
.003
.002
.003
.002
.001
.001
CURRENT IN PERCENT OF BREAKER TRIP UNIT RATING
www.ab.com/catalogs
Preferred availability cat. nos. are bold.
7-10
Publication A117-CA001A-EN-P
ROCKWELL [ ROCKWELL INTERNATIONAL CORPORATION. ]
