YFB1 Series Miniature Circuit Breaker
YFB1 series miniature high-section miniature circuit breaker is suitable for AC 50Hz or 60Hzrated working voltage is AC230V/400V, rated current to 63A line, overload and short circuitprotection of the line, can also be used as the line of infrequent operation conversion. Thecircuit breaker is suitable for commercial office buildings, residential buildings and similarbuildings.
This product conforms to GB/T10963.1,lEC60898-1 standards, with the internationaladvancedlevel.
Specification Parameter
Rated current:6A,10A,16A,20A,25A,25A,32A,40A,50A,63A
The supply form of the circuit breaker instantaneous release device is type C,and other
types of users can place special orders,such as type B or type D.
Rated short-circuit breaking capacity:Icn=lcs=6000A;TypeHIcn=lcs=10000A;
Number of poles and rated operating voltage:Ue=AC230V/AC400V(1P),
Ue=AC230V(1P+N),Ue=AC400V(2P,3P,3P+N,4P)
Mechanical and electrical life:Electrical life:6000 times;Mechanical life:20000 times.
Circuit breaker overcurrent protection characteristics:
| NO. | Rated current | Initial state | Experimental current | Fixed time | Expected result |
| 1 | In≤63 | Cold state | 1.13In | t≤1h | Don't trip |
| In>63 | t≤2h | ||||
| 2 | In≤63 | Immediately after the preceding test | 1.45In | t<1h | trip |
| In>63 | t<2h | ||||
| 3 | In≤32 | Cold state | 2.55In | 1s<t<60s | trip |
| In>32 | 1s<t<120s | ||||
| 4 | Type C | Cold state | 51In | t≤0.1s | Don't trip |
| 10In | t<0.1s | trip |
Outline And Mounting Dimensions
