Page 247 - ABB_Motor _Protection_and_Control_catalogue_20221216

ABB MOTOR PROTECTION AND CONTROL 3/171

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3-pole contactors for safety applications
Electrical durability

Electrical durability for AC-3 utilization category - Ue ≤ 440 V. 03
Switching cage motors: starting and switching off running motors. The breaking current Ic for AC-3 is equal to the rated
operational current Ie (Ie = motor full load current).
Ambient temperature and maximum electrical switching frequency: see "Technical data".

Millions of
operating AFS30, AFS38 AFS80, AFS96
cycles AFS09 AFS12 AFS16 AFS26 AFS40 AFS52 AFS65 AFS116 AFS146 AFS190 AFS205 AFS265 AFS305 AFS370 AFS400 AFS460 AFS580 AFS750
10

5

3 9
7
5
3
2 9 1
1.8 7
5
3
1 1

0.5

13 57 9 13 57 9 15 9 13 57 9
0.3
13 57 9
1 3 5 7 9 15 9 1 3 5 7 9
0.2
2 3 5 10 20 30 50 100 200 300 500 1000
55 Breaking current Ic (A)
Example:
Motor power 30 kW for AC-3 - Ue = 400 V and Ie = 55 A utilization – Electrical durability required = 1.8 million operating cycles.
For AC-3: Ic = Ie. Select the AFS65 contactor at intersection " " (55 A / 1.8 million operating cycles) on the curves
(AC-3 - Ue ≤ 440 V).