Contactors CAPACITOR DUTY CONTACTORS KC12, KC16, KC20, KC25, KC 33, KC 40, KC 60 When switched on, a capacitor can function as a short-circuit element. The capacitor inrush or charging current magnitude depends on AC voltage at turn-on and on the impedance of con- nection cables and a power supply transformer. In case of individual capacitor load, charging current peaks that are 30-time greater than rated capacitor current can occur. In case of a multi-stage capacitor the inrush current can exceed 180-time rated capacitor current. Such a strong current can flow through a contactor from the beginning when inrush current occurs from power supply network and the capacitor is already connected. Such inrush current is undesirable since main contacts of standard duty contactors are likely to weld. A new capacitor duty contactor is designed to meet the require- ments of capacitor duty applications. Contactors are fitted with a block of three auxiliary contacts connected in series with six quick discharge damping resistors, two per each phase. Peak current is limited to the value within the contactor making capacity. Advantages Three-pole contactors from 12,5 kVAr to 60 kVAr are available in Conforms to utilization category AC-6b seven ratings complying with the IEC 60947-4-1 for AC-6b utiliza- Saves costs of expensive replacement tion category. They have the UL certificate. Long electrical life Reduces watt losses during ON condition, saves energy High safety No risk of dangerous voltage Switching of capacitor bank in parallel without de-rating Less maintenance and downtime Standard control voltages: 24 V 50/60 Hz, 220 V 50/60 Hz, 230 V 50/60 Hz, 415 V 50/60 Hz TECHNICAL DATA Rating at Power Product 50 / 60 Current carrying capacity dissipation Mechanical Life (million) Electrical Life Code Hz per pole kVAr 55C 220 - 240 V 400 - 440 V kVAr/Current rating as per UL 50 or 60 Hz 50 / 60 Hz (Operations) Current Current kVAr at 230V kVAr at 400V 240 V 480 V 600 V W (A) (A) KC12 12.5 6.7 17.58 12.5 18.04 6 kVAr/15 A 12.5 kVAr/15 A 15 kVAr/15 A 0.36 17 15 200.000 KC16 16.7 8.5 22.3 16.7 24.1 8 kVAr/20 A 16.7 kVAr/20 A 20 kVAr/20 A 0.8 20 15 200.000 KC20 20 10 26.24 20 28.86 10 kVAr/24 A 20 kVAr/24 A 25 kVAr/24 A 1.25 16 12 100.000 KC25 25 15 39.36 25 36.08 12.5 kVAr/30 A 25 kVAr/30 A 33.3 kVAr/30 A 2 16 12 100.000 KC33 33.3 20 52.48 33.3 48.06 16.5 kVAr/40 A 33.3 kVAr/40 A 40 kVAr/40 A 4.2 16 6 100.000 KC40 40 25 65.6 40 57.73 20 kVAr/48 A 40 kVAr/48 A 50 kVAr/48 A 4.2 16 6 100.000 KC60 50 40 104.9 60 86.6 30 kVAr/72 A 60 kVAr/72 A 80 kVAr/77 A 5.1 10 4 100.000 1 2 For KC12 to KC25: clip-on mounting on 35 mm wide rail Average ambient temperature should not exceed 45 C within the 24-hour period in For KC33 - KC60: clip-on mounting on 75 mm wide rail accordance with IEC 60871 and IEC 60831 45Contactors CAPACITOR DUTY CONTACTORS KC12, KC16, KC20, KC25, KC33, KC40, KC60 TECHNICAL DATA Rating Product at 50 / Upper Block Wire Details Coil Consumption Code 60 Hz kVAr Time lag between Holding Lugs Cross - make contacts time of main Lugs - at at Aux Tightening 55C sectional Length Material VA VA VA of Aux block & contacts of Contactor end Block Torque Area contactor Aux block end 2 2 ms ms mm mm Nmm 50 Hz 60 Hz 50/60 Hz PTFE coated Pin type KC12 12.5 2 - 10 5 - 12 0.292 174.0 Ring type lug 1.2 7 7.5 8 Resistance wire lug PTFE coated Pin type KC16 16.7 2 - 10 5 - 12 0.292 174.0 Ring type lug 1.7 7 7.5 8 Resistance wire lug PTFE coated Pin type KC20 20 2 - 10 5 - 12 0.292 174.0 Ring type lug 1.85 7.5 7.5 8.5 Resistance wire lug PTFE coated Pin type KC25 25 2 - 10 5 - 12 0.292 174.0 Ring type lug 2.5 7.5 7.5 8.5 Resistance wire lug PTFE coated Pin type lug with Pin type KC33 33.3 2 - 10 5 - 12 0.196 245.0 5.0 20 22 26 Resistance wire Connector lug PTFE coated Pin type lug with Pin type KC40 40 2 - 10 5 - 12 0.196 245.0 5.0 20 22 26 Resistance wire Connector lug PTFE coated Pin type lug with Pin type KC60 50 2 - 10 5 - 12 0.196 245.0 9.0 20 22 26 Resistance wire Connector lug MOUNTING AND CONNECTION KC12, KC16, KC20, KC25 KC33, KC40, KC60 ORDERING DATA The type designation and control voltage are stated when ordering the contactors. KC12 - 11 - 230 - 50/60 Frequency Control voltage Version of contacts 46 Type