ABB Isomax MCCBs Technical data
Protective releases
Thermal-magnetic overcurrent release
Time-current curves, S3
S3, R15 S3, R20-R30
10000
10000
Isomax
MCCBs
15
2000
1000
200
100
20
t[s]
10
2
1
0.1
R15
0.01
0.1 110100
x Ith
2000
1000
200
100
20
10
t[s]
2
1
0,1
0,01
0,1 1 10 100
S3, R35-R50 S3, R50-R100
10000
10000
R30
R20
R25
xIth
2000
1000
200
100
20
t[s]
10
2
1
0.1
0.01
0.1 1 10 100
1 Direct current may shift tripping characteristic. Consult ABB.
xIth
R35
R40
R50
2000
1000
15
200
100
20
10
t[s]
2
1
0.1
0.01
0.1 1 10 100
x Ith
Low Voltage Products & Systems 15.103
ABB Inc. • 888-385-1221 • www.abb-control.com 1SXU 000 023 C0201
Protective releases
Isomax
MCCBs
15
S3, R125-R225 – 10X Im S3, R150-R225 – 3X Im
10000
Thermal-magnetic overcurrent release
Time-current curves, S3
10000
2000
1000
200
100
20
10
t[s]
2
1
0.1
0.01
0.1 1 10 100
x Ith
2000
1000
200
100
20
10
t[s]
2
1
0.1
0.01
0.1 1 10 100
xIth
15
15.104 Low Voltage Products & Systems
1SXU 000 023 C0201 ABB Inc. • 888-385-1221 • www.abb-control.com
S5 400 TMD
In = 300 - 400 A
= 2.5 In
I
3
Trip curves for distribution
Circuit breakers w/thermomagnetic trip units
Isomax S5 & S6
Consult factory
Isomax
MCCBs
15
S5 400 TMD
In = 300 - 400 A
= 5 ÷ 10 In
I
3
15
Consult factory
Low Voltage Products & Systems 15.105
ABB Inc. • 888-385-1221 • www.abb-control.com 1SXU 000 023 C0201
Isomax
MCCBs
15
Trip curves for distribution
Circuit breakers w/thermomagnetic trip units
Isomax S6
S6 600 TMD
In = 800 A
= 5 ÷ 10 In
I
3
t [s]
4
10
3
10
2
10
10
1
-1
10
-2
10
-1
10
1
600A
10
10
xI
2
1
S6 800 TMD
In = 800 A
= 2.5 In
I
3
15
t [s]
4
10
3
10
2
10
10
1
-1
10
-2
10
-1
10
1
800A
10
10
xI
2
1
15.106 Low Voltage Products & Systems
1SXU 000 023 C0201 ABB Inc. • 888-385-1221 • www.abb-control.com
Trip curves for distribution
Circuit breakers w/thermomagnetic trip units
Isomax S6
Isomax
MCCBs
15
S6 800 TMD
In = 800 A
= 5 ÷ 10 In
I
3
t [s]
4
10
3
10
2
10
10
1
-1
10
-2
10
-1
10
1
800A
10
10
xI
2
1
Low Voltage Products & Systems 15.107
ABB Inc. • 888-385-1221 • www.abb-control.com 1SXU 000 023 C0201
15
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