1. CAPACITOR CONTACTOR K3 - SERIES

2. Make-operation: - The inrush current peaks are reduced by the resistor wires - All contactors are provided with pre-contacts with snap function - The pre-contacts are opening after the main contacts are closed - The single controlled pre-contacts - as one block - are increasing the reliability against dust in the field and during transportation Operation: - No power losses of the resistor wires during operation, because they are no longer in the circuit Break: - No movement of the pre-contacts during breaking operation, these capacitor contactors can be used for all applications with high inrush currents Main Contacts Pre-Contacts 5-10 ms

3. RR open contactor housing coil RR auxiliary contacts - early make contacts auxiliary contact block damping resistors main contacts

4. K2-16A/K 12,5kVAr (18A/400V) A: 250A / Div. time:0,5ms / Div. With Pre-Contacts Without Pre-Contacts I = 1200 A I = 300 A

5. Advantages K2 & K3-series Contactor Range between 12,5 kVAr and 75 kVAr Usable for detuned and non-detuned capacitor banks Resistant against voltage raise caused by de-tuning No change of contactors in case of later installed detuning reactors Highest reliability in operation by using single controlled pre-contacts Reduced stress for capacitors Reduced power losses during operation Standardised design Compact design, small dimensions Standards: IEC/EN 60947 + VDE 0660 UL-Approved (UL508)

6. Advantages range-K3 Contactor Width up to 25/41 kvar 45mm only Larger terminals for larger cable cross-sections Box terminals for all contactors beginning at 20/28kVAr Up to 60 °C ambient temperature without derating (except 75/120kVAr) Covers for all moving parts of contactor Operation Indicator by auxiliary contact Side add-on auxiliary contact blocks (1NO+1NC) Integrated DIN-rail mounting

7. Product range

9. Safety and Reliability by: Safe Connection Covers

10. Customer benefits at one glance Excellent damping of inrush current Improved power quality (e.g. avoiding voltage sags) Smooth switching of the capacitor and therefore increased lifecycle of contactor and capacitor Increased lifecycle of the capacitor bank! Reduction of assembly time Reduction of ohmic losses (Cable turns)