Page 641 - Motor_protection_and_control_Manual_motor_starters_ contactors
P. 641

AS09..S ... AS16..S and

         ASL09..S ... ASL16..S  3-pole contactors - with spring terminals
         Electrical durability



         Electrical durability for AC-3 utilization category - Ue ≤ 440 V - Ambient temperature ≤ 60 °C
         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). Maximum electrical switching frequency: 1200 cycles / hour.


                      AS12..S, ASL12..S
                   AS09..S, ASL09..S AS16..S, ASL16..S
         Millions of
         operating
         cycles
                10


                 5


                 3 3      9
                          7
                          5
                          3
                 2    9   1                                                                                         6
                      7
                      5
                      3
                      1
                 1

               0.5


               0.3
                                            1  3  5  7  9
               0.2
                   2     3   4  5         10        20
                                           Breaking current Ic (A)
         Example:
         Breaking current = 4 A.
         On the opposite curve at intersection " " 4 A the corresponding value for the electrical durability is approximately 3 millions
         operating cycles.
























                                                                                                                    1SBC101945S0201






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