3TF Series AC Contactors are latest products of Siemens AG in 1990’s. The series products are suitable for frequency of 50/60Hz, rated insulation voltage up to 690 ~ 1000V, rated operational current up to 9A ~ 400A at rated operational voltage up to 380V under the utilization category AC - 3. 3TF Series AC Contactors are mainly used for making/breaking electric circuits at a long distance and for frequent starting/ stopping and reversing control of AC motors.They comply with IEC947, VDE0660, GB14048
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