
© 2000–2014 Schneider Electric
All Rights Reserved
Masterpact™ NT and NW Universal Power Circuit Breakers
Trip Curves
170
05/2014
Figure 166: Micrologic 6.0 A/P/H Trip Units: I
n
> 1200 A
.15
.1
.1
AMPERES x 10
3
AMPERES x 10
3
.05
.06
.07
.08
.09
.15
.2
.3
.4
.5
.6
.7
.8
.9
1
1.5
2
3
4
5
6
7
8
9
10
.05
.06
.07
.08
.09
.2
.3
.4
.5
.6
.7
.8
.9
1
1.5
2
3
4
5
6
7
8
9
10
200
300
400
500
600
700
800
900
1000
1500
2000
3000
4000
6000
7000
8000
9000
5000
10000
.005
.006
.007
.008
.009
.01
.015
.02
.03
.04
.05
.06
.07
.08
.09
.1
.005
.006
.007
.008
.009
.01
.015
.02
.03
.04
.05
.06
.07
.08
.09
.1
.15
.2
.3
.4
.5
.6
.7
.8
.9
1
.15
.2
.3
.4
.5
.6
.7
.8
.9
1
1.5
2
3
4
5
6
7
8
9
10
1.5
2
3
4
5
6
7
8
9
10
15
20
30
40
50
60
70
80
90
100
15
20
30
40
50
60
70
80
90
100
150
200
300
400
500
600
700
800
900
1000
1500
2000
3000
4000
5000
6000
7000
8000
9000
10000
TIME IN SECONDS
CYCLE
2
1
1 CYCLE
150
0.1 O
N
0.3 ON
0.4 ON
0.2 ON
0.4 OFF
500 A
720 A
1040 A
1200 A
880 A
640 A
800 A
960 A
1120 A
0.3 OFF
0.2 OFF
0.1 OFF
0
GROUND-FAULT
DELAY BANDS
I
2
t ON
GROUND-FAULT
PICKUP
x In
GROUND-FAULT
DELAY BANDS
I
2
t OFF
(FIXED DELAY)
DELAY
SECONDS AT 1 x In
0.1
0.2
0.3
0.4
MAXIMUM
UNRESTRAINED
GROUND-FAULT
DELAY
Curve No. 0613TC0003
Drawing No. B48095-613-03
Micrologic 6.0 A/P/H Trip Units
with Adjustable Ground-Fault Pickup and Delay
Characteristic Trip Curve No. 613-3
Ground Fault I
2
t OFF and ON
I
n
> 1200 A
The time-current curve information is to be used for
application and coordination purposes only.
Curves apply from -30°C to +60°C (-22°F to +140°F)
ambient temperature.
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