Product Description

ZUW1 Universal Circuit Breaker

ZYW1 intelligent 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.
2. Operation conditions
2.1 Temperature condition:  -5°C~40°C;the average value within 24h shall not exceed+35°C(special situation  excluded);
2.2 Altitude:≤2000m;
2.3 Pollution grade:  Grade 3;
2.4 Air conditions:
At mounting site, relative humidity not exceed 50% at the max temperature of +40°C, higher relative humidity is allowable under lower temperature,
RH could be 90% at +20°C, special measures  should be taken to occurrence of dews;

Main technical parameter

Type   YCW1-2000 YCW1-3200 YCW1-6300
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 50 50
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) 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 μΩ 11 9 -
Draw out type μΩ 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

Overload protection data

Overload protection YCW1-2000~6300
Adjust scope Ir1   (0.4-1)In (pole difference 2%)
1.05 Ir1 h ≥2h non-tripping
1.3 Ir1 h ≤1h tripping
Delay time tr1 when current is 2.0 In s 3.32, 5.32, 8.00, 13.3, 20, 26.6, 33.3, 45, 60, 93.3, 133, 200, 266, 333, 400, 433
Delay time tr1 when current is 3.0 In s 1.25, 2, 3.5, 7.5, 10, 12.5, 16.8, 22.5, 35, 50, 75, 100, 125, 150, 162
Accuracy % ±10
Short circuit, short time delay 
Adjust scope Ir1 Ir2 (0.4-15)In (pole difference 2%)
Delay time tr2 ms 100, 200, 300, 400
Accuracy % ±10

Characteristic of intelligent controller

    Overload long time-delay anti-time limit protection
Short circuit short time-delay anti-time limit protection
Short circuit short time-delay timing protection
Short circuit instantaneous protection
Insulate earth fault protection

Electrical accessories

Under-voltage release Rated working voltage Ue(V) AC400 AC230
Acting voltage (V) (0.35~0.7) Ue
Reliable close voltage (V) (0.85~1.1) Ue
Non close voltage (V) ≤0.335Ue
Power loss 12VA (YCW1-1000 5VA)
Shunt release Rated control power voltage Us(V) AC400 AC230 DC220 DC110
Acting voltage (V) (0.7~1.1) Ue
Open time 40VA 40W (YCW1-1000 5VA)
Power loss less than 30ms
Close electromagnetic iron Rated control power voltage Us(V) AC400 AC230 DC220 DC110
Acting voltage (V) (0.85~1.1) Ue
Open time 40VA 40W (YCW1-1000 5VA)
Power loss less than 70ms
Motor operating device Rated control power voltage Us(V) AC400 AC230 DC220 DC110
Acting voltage (V) (0.85~1.1) Ue
Open time 40VA 40W (YCW1-1000 5VA)
Power loss less than 5s