Basic Info.
Model NO.
QDW4
Poles Number
4
Type
Circuit Breaker
Function
Conventional Circuit Breaker
Certification
ISO9001-2000
Transport Package
Wooden Case
Specification
200A - 1600A
Trademark
Q&S
Origin
Zhejiang, China
HS Code
8536200000
Production Capacity
30000 PCS / Year
Product Description
QDW3 series universal Air circuit breaker(hereinafter referred to as breaker)is suitable for the circuit of AC 50Hz with rated voltage 400V, 690V and rated current up to 6300A. It is mainly used to distribute electric energy and protect circuits and power-supply equipment from overload, under-voltage, short-circuit and single-phase earthing. with intelligentized 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. This breaker conforms to IEC60947-2 and GB14048.2 and CE.
Specifications of Q&S brand QDW3 series Intelligent Air circuit breaker
| Type | QDW3 -2000 | QDW3-3200 | QDW3-6300 | ||
| Pole | 3P, 4P | 3P, 4P | 3P, 4P | ||
| Using category | B | B | B | ||
| Rated current In | A | 630, 800, 1000, 1250, 1600, 2000 | 2000, 2500, 3000 | 4000, 5000, 6300 | |
| Rated frequency | Hz | 50/60 | 50/60 | 50/60 | |
| Rated operation voltage Ue | V | 400 690 | 400 690 | 400 690 | |
| Rated insulation voltage Ui | V | 800 | 800 | 800 | |
| Arcing distance | mm | 0 | 0 | 0 | |
| Rated impulse withstanding voltage Uimp | V | 8000 | 8000 | 8000 | |
| Rated operation short circuit breaking capacity Ics(O-t-CO-t-CO) | 400V | ka | 50 | 80 | 100 |
| 690V | ka | 40 | 50 | 75 | |
| Rated limiting short circuit breaking capacity Icu(O-t-CO) | 400V | ka | 80 | 100 | 120 |
| 690V | ka | 50 | 65 | 85 | |
| Rated short circuit closing capacity Icm | 400V | ka | 176 | 220 | 264 |
| 690V | ka | 105 | 143 | 187 | |
| Rated short time withstanding current Icw(O-t-CO, AC400V 0.4s) | 400V | ka | 50 | 65 | 85 |
| Operation life | per hour | Times | 20 | 20 | 10 |
| Electrical | Times | 1000 | 500 | 500 | |
| Mechanical | Times | 10000 | 5000 | 5000 | |
| Full breaking time | ms | 20~30 | 20~30 | 20~30 | |
| Full closing time | ms | 55~70 | 55~70 | 55~70 | |
| Power consumption | 3P | W | 360 | 1200 | 2000 |
| 4P | W | 450 | 1750 | 2300 | |
| Resistance of each pole | Fixed type | μ Ω | 11 | 9 | - |
| Draw out type | μ Ω | 20 | 14 | 10 | |
| Dimensions(L*W*H) | 3P fixed type | mm | 362*323*402 | 422*323*402 | |
| 3P draw out type | mm | 375*461*452 | 435*471*452 | ||
| 4P fixed type | mm | 457*323*402 | 537*323*402 | ||
| 4P draw out type | mm | 470*461*452 | 550*471*452 | ||
| Approximate weight | 3P fixed type | kg | 41 | 55 | |
| 3P draw out type | kg | 71 | 95 | 245 | |
| 4P fixed type | kg | 51.5 | 65 | ||
| 4P draw out type | kg | 86 | 115 | 260 |
