Page 660 - Motor_protection_and_control_Manual_motor_starters_ contactors
P. 660

Auxiliary contact blocks for AS09..S ... AS16..S, ASL09..S ... ASL16..S

       contactors and NS, NSL contactor relays - with spring terminals
       Electrical durability



       Electrical durability for AC-15 utilization category - Ue ≤ 400 V
       AC-15 utilization category according to IEC 60947-5-1 / EN 60947-5-1:
          – making current: 10 x Ie with cos ϕ = 0.7 and Ue
          – breaking current: Ie with cos ϕ = 0.4 and Ue.
       This curve represents the electrical durability of the built-in or add-on auxiliary contacts in relation to the breaking current.

       The curve has been drawn for resistive and inductive loads up to 400 V:
          – AS09..S ... AS16..S and ASL09..S ... ASL16..S contactor built-in auxiliary contacts
          – 1-pole CA3..S
          – NS..S and NSL..S contactor relays.


       Millions of
       operating
       cycles
              30

    6         20

              10

              5

              3
              2

              1


             0.5
             0.3
             0.2

                                                                  1  3  5  7  9
             0.1
                0.02       0.05     0.1      0.2  0.3   0.5      1  1.3   2   3   4  5  6    10
                                                                                   Breaking current Ic (A)


       Example:
       Breaking current = 1.3 A
       On the opposite curve at intersection " " 1.3 A the corresponding value for the electrical durability is approximately 2 millions
       operating cycles.













                                                                                                                  1SBC101947S0201






       6/36  |  ABB
   655   656   657   658   659   660   661   662   663   664   665