LMB1moulded case circuit breaker with rated insulation voltage 800V, applied in the power system of AC50(60)Hz, rated voltage 690V and below, rated current 1250A and below as the transfer not frequently. The circuit breaker has the protection devices of over load, short circuit and under voltage ,it
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LMB1moulded case circuit breaker with rated insulation voltage 800V, applied in the power system of AC50(60)Hz, rated voltage 690V and below, rated current 1250A and below as the transfer not frequently. The circuit breaker has the protection devices of over load, short circuit and under voltage ,it can protect the circuit and power equipment from broken.
The mccb can be sorted to C type (basic),L type (standard), according to its rated limit short circuit breaking capacity.
The mccb has the features small volume, breaking capacity high, electric arcing short ,anti-vibration. It is the ideal product for application in land and ship.
The installation can be vertical or level and the standard conforms to IEC60947-2 and GB14048.2
Protective characteristics
Ui of release (A)
| Thermal breaking release (40for land,45°Cfor ship) | Electromagnetic release breaking current(A) | Remark | |
1.05In(cool station)no breaking time(h) | 1.30(thermal station) breaking time(h) | |||
10<In<63 | >=1 | <1 | 10In±20%
| Power distribution
|
63<In<100 | >=2 | <2 | ||
100<In<800 | >=2 | <2 | 5In±20%&10In±20% | Power distribution |
Type | LMB1-63 | LMB1-125 | LMB1-250 | LMB1-400 | LMB1-630 | LMB1-800 |
Poles | 3 & 4 pole | 3 pole | ||||
Rated current | 6,10,16,20, 25,32,40, 50 ,63 | 63,80,100, 125 | 125,160, 180,200, 225,250 | 225,250,315,350,400 | 400,500,630 | 630,800 |
Rated voltage Ue V | 400V | |||||
Rated insulation volt Ui V | 500V | 800V | ||||
Utilization category | A | |||||
Rated limited capacity Iuc(KA) | 50 | 50 | 50 | 65 | 75 | 100 |
