Page 183 - ABB_Motor _Protection_and_Control_catalogue_20221216

ABB MOTOR PROTECTION AND CONTROL 3/107

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3-pole contactors
Electrical durability

Electrical durability for AC-3 utilization category - 440 V < Ue ≤ 690 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 AF1350, AF1650:
cycles The electrical durability at
AF09 AF12 AF16 AF26 AF30 AF38 AF40 AF52 AF65 AF80 AF96 AF116 AF140 AF146 AF190 AF205 AF265 AF305 AF370 AF400 AF460 AF580 * * the rated current is 50000
AF750
operating cycles.
10

5

3 9
7
5
3
2 9 1
7
1.5 5
3
1
1

0.5

0.3 13 57 9 15 9 13 57 9
1 3 5 7 9 13 57 9 1 3 5 7 9 13 57 9
0.2 13 57 9
2 3 5 10 20 30 50 100 200 300 500 1000
140 Breaking current Ic (A)

Note: * For AF580 and AF750 contacts needs to be replaced after 750k operations.
Example:
Motor power 132 kW for AC-3 - Ue = 660 V and Ie = 140 A utilization – Electrical durability required = 1.5 million operating cycles.
For AC-3: Ic = Ie. Select the AF265 contactor at intersection " " (140 A / 1.5 million operating cycles) on the curves
(AC-3 - 440 V < Ue ≤ 690 V).