Technical data

IZMX circuit-breakers, INX switch-disconnectors
Tripping characteristics
CA01305001Z-EN www.eaton.com
65
IZMX16…P… Tripping characteristics for professional protection IZMX40…P… Tripping characteristic for professional protection
Digitrip 1150/1150i - Maintenance Mode Curves (ARMS) Digitrip 1150/1150i - Maintenance Mode Curves (ARMS)
Notes The total Instantaneous clearing times shown are conservative and consider the maximum response times of the trip unit, the circuit breaker open-
ing, and the interruption of the current under factors that contribute to worst case conditions, like: maximum rated voltages, single phase interrup-
tion, and minimum power factor. Faster clearing times are possible depending on the specific system conditions, the type of circuit breaker applied,
and if any arc reduction settings are employed.
4.0
5.0
2.0
3.0
1.0
0.6
0.8
8
9
5
4
7
6
1
2
3
0.01
0.5
0.7
0.9
1
0.02
0.08
0.09
0.05
0.04
0.03
0.07
0.06
0.2
0.8
0.9
0.5
0.4
0.3
0.7
0.6
543
6
7
8
9
10
2
RMS Current (kA)
t [s]
0.1
10
1230DIA-137
Minimum Available
Arc Flash
Reduction Setting
5.0 kA
Maximum Available
Arc Flash
Reduction Setting
1.0 kA
20.0
8.0
12.0
16.0
4.0
0.6
0.8
100
8
9
5
4
7
6
1
2
3
0.01
0.5
0.7
0.9
1
0.02
0.08
0.09
0.05
0.04
0.03
0.07
0.06
0.2
0.8
0.9
0.5
0.4
0.3
0.7
0.6
543
6
7
8
9
10
20
30
40 50 60
70 90
2
t [s]
0.1
10
1230DIA-151
80
RMS Current (kA)
Minimum Available
Arc Flash
Reduction Setting
20.0 kA
Maximum Available
Arc Flash
Reduction Setting
4.0 kA
IZMX16(40)...P...