Page 149 - Motor protection and control Manual motor starters, contactors and overload relays

ABB MOTOR PROTECTION AND CONTROL 3/75

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3-pole contactors
Electrical durability

Electrical durability for AC-1 utilization category - Ue ≤ 690 V 03
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 AF580* * The electrical durability
AF09 AF12 AF16 AF26 AF40 AF52 AF65 AF116 AF140 AF146 AF190 AF205 AF265 AF305 AF370 50000 operating cycles.
cycles AF30, AF38 AF80, AF96 AF400 AF460 AF750 at the rated current is
10

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)
Note: * For AF580 and AF750 contacts needs to be replaced after 750k operations.
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