MO C Capacitor Duty Contactors are specially designed for capacitor switching applications. As capacitor switching is associated with high inrush current, the contactors are provided with damping resistors which limit the value of inrush current to a safe value. The contactors are used in APFC panels for switching power capacitors depending upon the amount of reactive power compensation required. The MO C contactors are 3-pole contactors are of the block type design - Control circuit: AC operated and suitable for 50/60Hz frequency - Accessories: a wide range of accessories is available.