Page 350 - Motor_protection_and_control_Manual_motor_starters_ contactors

3-pole contactors

Electrical durability

Electrical durability for AC-1 utilization category - Ue ≤ 690 V
Switching non-inductive or slightly inductive loads. The breaking current Ic for AC-1 is equal to the rated operational current of
the load.
Ambient temperature and maximum electrical switching frequency: see "Technical data".

AF1250, AF1350,
Millions of AF1650, AF2050:
operating AF30, AF38 AF80, AF96 AF400 AF460 AF580 AF750 The electrical durability at
cycles AF09 AF12 AF16 AF26 AF40 AF52 AF65 AF116 AF140 AF146 AF190 AF205 AF265 AF305 AF370 the rated current is 50000
operating cycles.
10

5
5

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

0.5

0.3 9
7
5
3
0.2 1
13 57 9 15 9 13 57 9
13 57 9 15 9
1 3 5 7 9 1 3 5 7 9
0.1
2 3 5 10 20 30 50 100 200 300 500 1000
26.5 Breaking current Ic (A)

Example:
Ic / AC-1 = 26.5 A – Electrical durability required = 2 millions operating cycles.
Using the AC-1 curves above select the AF26 contactor at intersection " " (26.5 A / 2 millions operating cycles).

1SBC101940S0201

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