8345-B Datasheet, PDF (6/10 Pages) ETAL Group – In the business fields Communication and Transport: power supplies, switchgear, instrumentation and process control engineering

Magnetic and Hydraulic-Magnetic Circuit Breaker 8345-...
Typical time/current characteristics at +23 °C / +73.4 °F
Curve F1 (instantaneous) for DC
10000
Curve F2 (instantaneous) for AC
10000
1000
1000
100
100
10
10
1
1
1
0,1
0,1
0,01
0,01
0,001
01
2 3 4 5 6 7 8 9 10 11 12
… times rated current
Curve K1 (short delay) for DC
10000
0,001
0 1 2 3 4 5 6 7 8 9 10 11 12
… times rated current
Curve K2 (short delay) for AC 50/60 Hz
10000
1000
1000
100
100
10
10
1
1
0,1
0,01
0,001
01
2 3 4 5 6 7 8 9 10 11 12
… times rated current
Curve M1 (medium delay) for DC
10000
0,1
0,01
0,001
01 2 3 4 5 6 7 89
… times rated current
Curve M2 (medium delay) for AC 50/60 Hz
10000
10 11 12
1000
1000
100
100
10
10
1
1
0,1
0,1
0,01
0,01
0,001
01
2 3 4 5 6 7 8 9 10 11 12
… times rated current
0,001
01
2 3 4 5 6 7 8 9 10 11 12
… times rated current
Curve T1 (long delay) for DC
10000
1000
Curve T2 (long delay) for AC 50/60 Hz
10000
1000
100
100
10
10
1
1
0,1
0,1
0,01
0,001
01
2 3 4 5 6 7 8 9 10 11 12
… times rated current
0,01
0,001
01
2 3 4 5 6 7 8 9 10 11 12
… times rated current
N.B. All curves will only be maintained if the escutcheon is mounted on a vertical surface.
Ambient temperature or mounting side-by-side does not influence the trip curve, derating is not required.
The breakers may trip in the event of current peaks < 0.003 sec. For these applications we
offer a mechanical pulse delay – please enquire.
Other characteristic curves upon request (e.g. pulse delayed, for high inrush currents or capacitive loads).
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