Page 352 - Motor_protection_and_control_Manual_motor_starters_ contactors

3-pole contactors

Electrical durability

Electrical durability for AC-3 utilization category - 440 V < Ue ≤ 690 V.
Switching cage motors: starting and switching off running motors. The breaking current Ic for AC-3 is equal to the rated opera-
tional 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 AF750 the rated current is 50000
operating cycles.
10

5
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)

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).

1SBC101955S0201

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