We catch the right phase
CQ type contactors are designed for switching of capacitive circuits (capacitors) in three-phase low voltage networks of voltage up to 400V.
Technologies applied ensure reduction to minimum of transients (overvoltages, overloads) during switching of capacitive circuits. In case of single
capacitor switching by means of traditional capacitors, switching current can reach value 30 times higher than value of the capacitor’s rated current.
In case of capacitor bank with several grades, the value can exceed several hundred times the rated value. Such high currents might cause welding of
contactors’ contacts and damaging of capacitors. Construction of contactor with “smooth switching” circuits ensure switching transients limiting to
value permitted by IEC 60831 standard (≤100ICN by 0,5 of period).
General rated data
| Type | CQ12 | CQ20 | CQ32 | CQ50 |
| Rated voltage UN | 400V | |||
| Insulation voltage Ui | 660V | |||
| Control current | 230V AC | |||
| Making ability for ambient temperature up to 40°C for voltage 400V [kVar] | 12 | 20 | 32 | 50 |
| Rated thermal currentIth [A] | 26 | 43 | 69 | 108 |
| Quantity of auxiliary contacts | 1NO + 1NC | 1NO + 1NC | 1NO + 2NC | 1NO + 2NC |
| Maximum quantity of operations per hour |
120 | |||
| Electrical life (ambient temperature up to 40°C) | 100000 | |||
| Electrical life (ambient temperature up to 30°C) | 300000 | |||
| Mechanical life | 1000000 | |||
| Altitude | ≤2000m. a.s.l. | |||
| Ambient temperature: | -5...+40°C | |||
| Permissible power cables cross-section [mm2] | 4 | 10 | 16 | 25 |
| Permissible power cables cross-section [mm2] | 1,5 | |||
| Dimensions: Drawing A [mm] B [mm] C [mm] D [mm] E [mm] F [mm] |
1 max. 130 48 132 76 40 50/60 |
1 max. 130 58 137 86 40 50/60 |
2 max. 200 77 151 - 40 - |
2 max. 200 87 160 - 40 - |
