Function of mcb breaker
RB10-63 series MCB breaker, used as overload and short circuit protection, applies to a circuit of AC 50Hz,rated voltage 230/400V, rated current up to 63A. Usually it functions as un frequently switching. In addition, it can be also used as an isolator to cut off the circuit for maintenance of circuit and equipment.
Application
Industry and commercial buildings, high-rise buildings and residential houses, etc.
Conforms to standard
IEC/EN 60898-1
Main Parameters of mcb breaker (Form 1)
| Types | Values |
| Rated voltage Un | 240V/415V AC(1P),415V AC(2P、3P、4P) |
| Rated current In | 1A,2A,3A,4A,6A,10A,16A,20A,25A,32A,40A,50A,63A |
| Poles | 1P、2P、3P、4P |
| lnstant tripping type | B,C,D |
| Rated short circuit breaking capacity(lcn) | 10000A |
| Overcurrent protection properties | See Form 2，Diagram 1,2 and 3 |
| Mechanical and electrical life | See Form 3 |
| Connection wire | See Form 4 |
| Tightening torque | 2.5N.m |
| Nominal temperature °C | 30°C |
| Operated ambient temperature °C | -5~+40°C |
| Stored ambient temperature °C | -25~+70°C |
| Pollution level | 2 |
| Protection level | IP20 |
| Mounting type | ll |
Overcurrent protection properties(Nominal temperature 30 °C) (Form 2)
| ltem | Type | Test current |
Initial status | Tripping or non tripping time limit |
Expected result | Remarks |
| a | BCD | 1.13In | Cold | t≤1h | Non tripping | |
| b | 1.45In | est following the previous procedure; Process after test |
t<1h | Trip | Current increases to stipulated value within 5s |
|
| c | 2.55In | Cold | 1s<t<60s (for In≤32A) 1s<t<120s (for In>32A) |
Trip | ||
| d | BCD | 3In 5In 10ln |
Cold | t≤0.1s | Non tripping | Connection of current by opening auxiliary switch |
| e | BCD | 5In 10ln 20In |
Cold | t≤0.1s | Trip | Connection of current by opening auxiliary switch |
Diagram 1,2 and 3
Mechanical and electrical life (Form 3)
|
Type
|
Times
|
|
Electrical life
|
10000
|
|
Mechanical life
|
20000
|
Connection Wire of mcb breaker (Form 4)
| Rated current In(A) | Copper wire nominal cross-sectional area S(mm2) |
| 1~6 | 1.0 |
| 10 | 1.5 |
| 16,20 | 2.5 |
| 25 | 4 |
| 32 | 6 |
| 40,50 | 10 |
| 63 | 16 |
Overall and mounting sizes (mm)
