GENERAL
ST2 Series AC Contactor is suitable for using in the circuits the rated voltage up to 660V AC 50Hz or 60Hz, rated current up to 95A, for making & breaking, frequently starting & controlling the AC motor. Combined with the auxiliary contact block, timer delay & machine- interlocking device etc, it becomes the delay contactor, mechanical interlocking contactor, star-delta starter. With the thermal relay, it is combined into the electromagnetic starter. The Contactor is produced according to IEC 60947-1.
Specifications
Type |
ST2-09 |
ST2-12 |
ST2-18 |
ST2-25 |
ST2-32 |
ST2-40 |
ST2-50 |
ST2-65 |
ST2-80 |
ST2-95 |
Rated working current (A) |
AC3 |
9 |
12 |
18 |
25 |
32 |
40 |
50 |
65 |
80 |
95 |
AC4 |
3.5 |
5 |
7.7 |
8.5 |
12 |
18.5 |
24 |
28 |
37 |
44 |
Standard power ratingsof 3-phase motors 50/60Hz in category AC-3 |
220/230V |
2.2 |
3 |
4 |
5.5 |
7.5 |
11 |
15 |
18.5 |
22 |
25 |
380/400V |
4 |
5.5 |
7.5 |
11 |
15 |
18.5 |
22 |
30 |
37 |
45 |
415V |
4 |
5.5 |
9 |
11 |
15 |
22 |
25 |
37 |
45 |
45 |
500V |
5.5 |
7.5 |
10 |
15 |
18.5 |
22 |
30 |
37 |
55 |
55 |
660/690V |
5.5 |
7.5 |
10 |
15 |
18.5 |
30 |
33 |
37 |
45 |
55 |
Rated heat current (A) |
20 |
20 |
32 |
40 |
50 |
60 |
80 |
80 |
125 |
125 |
Electrical life |
AC3 (x104) |
100 |
100 |
100 |
100 |
80 |
80 |
60 |
60 |
60 |
60 |
AC4 (x104) |
20 |
20 |
20 |
20 |
20 |
15 |
15 |
15 |
10 |
10 |
Mechanical life (x104) |
1000 |
1000 |
1000 |
1000 |
800 |
800 |
800 |
800 |
600 |
600 |
Number of the contacts |
3P+NO |
3P+NC+NO |
3P+NC |