Page 354 - Motor_protection_and_control_Manual_motor_starters_ contactors

3-pole contactors

Electrical durability

Electrical durability for AC-2 or AC-4 utilization category - 440 V < Ue ≤ 690 V
Ambient temperature ≤ 60 °C for AF09 ... AF370, ≤ 55 °C for AF400 ... AF750
Switching cage motors: starting, reverse operation and step-by-step operation. The breaking current Ic is equal to 2.5 x Ie for
AC-2 and 6 x Ie for AC-4, keaping in mind tha Ie is the motor rated operational current (Ie = motor full load current). Maximum
electrical switching frequency: see "Technical data".

Millions of
operating AF116 AF140
cycles AF146 AF190 AF205 AF400
AF09 AF12 AF16 AF26 AF30 AF38 AF40 AF52 AF65 AF80, AF96 AF265 AF305 AF370 AF460 AF580 AF750

10
5
5

3
2 9
7
5
3
1 1

0.5
0.3
0.2 9
7
5
3
0.1 1
0.05

0.03
0.02 9
7
5
3
0.01 1 1 3 5 7 9
1 3 5 7 9 1 3 5 7 9 1 3 5 7 9
0.005
2 3 5 10 20 30 50 100 200 300 500 1000 2000 3000 5000
Breaking current Ic (A)

1SBC101943S0201

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