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Plastic case type low-voltage circuit breakers are suitable for alternating current with a frequency of 50Hz or 60Hz.
Our company can produce this kind of product with a rated voltage of less than 1kV and a rated current of 800A and below.
It integrates comprehensive protection, high-precision measurement, control, and communication functions, and has high sensitivity.
This product is mainly used in low-current low-voltage switchgear, distribution boxes,and other low-voltage power distribution line networks, as well as in new energy power generation.
Enforce standars
GB/T 14048 Low voltage switchgear and control equipment
IEC 60947-2 Low voltage switchgear and control equipment
Type description
Normal service condition
Temperature: -25 degrees Celsius to +70 degrees Celsius
Altitude: less than or equal to 2500 meters
Pollution/Protection Level:Level 3/IP20
Performance parameter
| Modelnumber | Bracketratingcurrent(A) | Ratedcurrent(A) | Rated operatingvoltageUe(V) | Rated in-sulationvoltageUi(V) | Flutterimpulsewith-standvoltageUimp(kV) | Ratedlimitshort-cir-cuitbreakingcapacity(kA) | Rated op-eratingshort-cir-cuitbreakingcapacity(kA)400V/690V | Main-tainablemachinelife(second) | ElectricallifeAC400V(times) | Numberof poles | Arcdistance(mm) |
| EWS-63S | 63 | 10,16,20,25,32.4050.63 | 400 | 500 | 8 | 25* | 12.5° | 20000 | 3000 | 3 | ≤50 |
| EWS-63H | 63 | 50*50* | 25* | 20000 | 3000 | 3 | |||||
| 25* | 20000 | 3000 | 4 | ||||||||
| EWS-125S | 125 | 16,20,25,32,40,50.63,80,100,125 | 400/690 | 800 | 8 | 35/8 | 17.5/4 | 20000 | 3000 | 2.3 | ≤50 |
| 35/8 | 17.5/4 | 20000 | 3000 | 4 | |||||||
| EWS-125H | 125 | 50/10 | 25/5 | 20000 | 3000 | 2,3,4 | |||||
| EWS-125R | 125 | 85/20 | 425/10 | 20000 | 3000 | 3 | |||||
| EWS-250S | 250 | 125,160,180.200,225,250 | 400/690 | 800 | 8 | 35/8 | 18/4 | 20000 | 3000 | 2.3 | ≤50 |
| 35/8 | 18/4 | 20000 | 3000 | 4 | |||||||
| EWS-250H | 250 | 50/10 | 25/5 | 20000 | 3000 | 2,3,4 | |||||
| EWS-250R | 250 | 85/20 | 42.5/10 | 20000 | 3000 | 3 | |||||
| EWS-400S | 400 | 250,315,350,400 | 400/690 | 800 | 8 | 50/10 | 25/5 | 10000 | 2000 | 3 | s100 |
| 50/10 | 25/5 | 10000 | 2000 | 4 | |||||||
| EWS-400H | 400 | 65/2065/20 | 325/10 | 10000 | 2000 | 3 | |||||
| 32.5/10 | 10000 | 2000 | 4 | ||||||||
| EWS-400R | 400 | 100/20 | 50/10 | 10000 | 2000 | 3 | |||||
| EWS-630S | 630 | 400,500,630 | 400/690 | 800 | 8 | 50/10 | 25/5 | 10000 | 2000 | 3 | |
| 50/10 | 25/5 | 10000 | 2000 | 4 | ≤100 | ||||||
| EWS-630H | 630 | 65/10 | 32.5/5 | 10000 | 2000 | 3,4 | |||||
| EWS-630R | 630 | 100/20 | 50/10 | 10000 | 2000 | 3 | |||||
| EWS-800S | 800 | 630,700,800 | 400/690 | 800 | 8 | 50/10 | 25/5 | 10000 | 2000 | 3 | |
| 50/10 | 25/5 | 10000 | 2000 | 4 | ≤100 | ||||||
| EWS-800H | 800 | 75/3075/30 | 37.5/1537.5/15 | 10000 | 2000 | 3 | |||||
| 10000 | 2000 | 4 | |||||||||
| EWS-800R | 800 | 100/30 | 50/15 | 10000 | 2000 | 3 | |||||
| EWS-1250S | 1250 | 800,1000,1250 | 400/690 | 800 | 8 | 65/20 | 32.5/10 | 5000 | 800 | 3 | ≤100 |
| EWS-1250H | 1250 | 85/25 | 42.5/12.5 | 5000 | 800 | 3 | s100 |
