Air Circuit Breakers — CW1 Series ACB 
Designation
CW1 series intelliqent air circuit breakers (hereinafter called ACB) are applied for the network circuit of AC 50Hz. rated voltage 400V. 690V and rated current between 630A and 6300A. Mainly used for distributing energy and protecting the circuit and power supply device against short-circuit, undervoltage, single-phase ground fault, etc. The ACB has intelligent protection function and the key parts adopt intelligent release. The release can make the accurate selective protection, which can avoid cutting off the power and improve the reliability of power supply.
The products conform with IEC60947-1.IEC60947-2 standards.
Specaition
Type | CW1-2000 | CW1-3200 | CW1-6300 | ||
Pole | 3P, 4P | 3P, 4P | 3P, 4P | ||
Rated current In | A | 630, 800, 1000 | 2000, 2500, 3000 | 4000, 5000, 6300 | |
Rated operation voltage Ue | V | 400, 660 | 400, 660 | 400, 660 | |
Rated insulation voltage Ui | V | 800 | 800 | 800 | |
Rated impulse withstanding voltage Uimp | V | 8000 | 8000 | 8000 | |
Rated operation short circuit | 400V | kA | 50 | 80 | 100 |
690V | kA | 40 | 50 | 75 | |
Rated limiting short circuit | 400V | kA | 80 | 100 | 120 |
690V | kA | 50 | 65 | 85 | |
Rated short circuit closing | 400V | kA | 176 | 220 | 264 |
690V | kA | 105 | 143 | 187 | |
Rated short time withstanding | 400V | kA | 50 | 65 | 85 |
Operation life | Per hour | times | 20 | 20 | 10 |
Electrical | times | 1000 | 500 | 500 | |
Mechanical | times | 10000 | 5000 | 5000 | |
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