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Basic Info.
Model NO.
YCW3
Poles Number
3,4
Type
Circuit Breaker
Function
Conventional Circuit Breaker
Certification
VDE, CE
Rated Current
200~6300A
Poles
3p/4p
Ue(V)
400/415, 660/690
Ui(V)
1000
Frequency
50/60Hz
Installationtype
Drawout/Fixed
Transport Package
CNC Packingstandard Packaging
Specification
YCW3
Trademark
CNC
Origin
Zhejiang, China
HS Code
8536200000
Production Capacity
80000 Unit/Units Per Week
Product Description
CNC OEM Factory Air Circuit Breaker 400A 4000A 1250A 3p 42 Ka
YCW3 series air circuit breaker(hereinafter called ACB) is suitable for the circuit of AC 50Hz/60Hz with rated service voltage 400V, 690V and rated service current between 200A and 6300A. It is mainly used to distribute electric energy and protect circuits and electric equipment against over-load, under-voltage, short-circuit and single- phase earthing fault.
With intelligent and selective protection functions, the breaker can improve the reliability of power supply, and avoid unnecessary power failure. The breaker is applicable for power stations, factories, mines(for 690V) and modern high-buildings, especially for the distribution system of intelligentized building.
Standard: IEC/EN 60947-2.
Breaking capacity
| Rated current In(A) | 1600 | 2000 | 3200 | 4000 | 6300 | |
| Rated ultimate short circuit breaking capacity Icu(kA) | 400/415V | 65 | 80 | 100 | 120 | 135 |
| 660/690V | 50 | 65 | 85 | 85 | 100 | |
| Rated service short circuit breaking capacity Ics(kA) | 400/415V | 55 | 65 | 80 | 100 | 135 |
| 660/690V | 42 | 65 | 70 | 85 | 100 | |
| Rated short time withstand current Icw.1s(kA) | 400/415V | 50 | 65 | 80 | 100 | 135 |
| 660/690V | 42 | 65 | 70 | 85 | 100 | |
| Rated short circuit making and breaking capacity Icm(kA) | 400/415V | 110 | 176 | 220 | 264 | 297 |
| 660/690V | 77 | 143 | 154 | 187 | 220 | |
| Electric life | 8000 | 8000 | 8000 | 6000 | 1500 | |
| Mechanical life (Maintenance) | 30000 | 30000 | 20000 | 20000 | 5000 | |
| Mechanical life (Non-maintenance) | 20000 | 15000 | 12500 | 10000 | 2500 | |
| Dimension(mm) W×H×L | ||||||
| Drawout type | 3P | 285×345×351 | 375×451×432 | 435×486×439 | 435×486×439 | 930×486×439 |
| 4P | 352×345×351 | 470×451×432 | 550×486×439 | 550×486×439 | / | |
| Fixed type | 3P | 254×251×320 | 362×362×395 | 426×378×395 | 426×378×395 | / |
| 4P | 324×251×320 | 457×362×395 | 537×378×395 | 537×378×395 | / | |
Note: 6300A only has 3P drawout type 
