CENM7 series DC moulded case circuit breakers (he reinafter called:breaker), are suitable for DC system of DC 1000V, rated current10A - 1250A, with protections of overloading, short circuit, undervoltage and etc, able to protect line and power equipment frombeing damaged by over-voltage or over-current, widely used inpower generationtransmission and distribution, new energy.communication, building fields and etc.

● Breaker can be used in the DC system with no earthing, one poleearthed, or neutral point earthed

● Within specified voltage, it can carry 1250A at maximum ifseveral breakers operated in parallel. 

● Arcing quench system integrates VJC and ISTAC technologies toperform quickly extinguish electric arc.

● It can perform operating full load at 50°C (Please indicate thispoint if requested)

● The breaker can be mounted vertically, or in horizon

● The breaker has the function of isolation, its symbol as: 

● The breaker complies with IEC60947-2 and GB14048.2 standards

● Altitude: ≤2000m (if higher than 2000m, please put into serviceat lower capacity)
● Ambient temperature: -25~70°C (if higher than 50°C，pleaseput into service at lower capacity, if lower than 25°C ， pleasediscuss with manufacturer)

● Relative humidity at +40°C shall not exceed 50%, higher valueallowed at lower temperature, such as: 90% allowed at 20°Calso please adopt proper treatment in consideration of dewresulted from temperature difference.

● able to withstand the influence of humid air

● able to withstand the influence of salty fog, oil fog

● resist fungus

● Mounting category between breaker to main line: Ill, breaker notconnected to main line: II
● Working site shall have no explosive medium, or the medium didnot corrode the metal or damage the insulation, or noconductive dust
● lf the working site out of the conditions specified above, pleasediscuss with manufacturer