DM1z series DC moulded case circuit breakers are suitable for DC system no more than DC 1000V, rated current 10A ~1250A, with protections of overload, short circuit, under-voltage and etc, able to protect line and power equipment from being damaged by over-voltage or over-current, widel used in power generation, transmission and distribution, new energy, communication, building fields, etc.

– DM1z circuit breakers can be used in the DC systems: no earthing, one pole earthed, or neutral point earthed.

– Arcing quench system integrates VJC and ISTAC technologies to perform quickly extinguish electric arc.

– Even at 50℃, the DM1z circuit breakers can load fully (please indicate this point if required)

– Can be mounted vertically or horizontally.

– Has isolation function also.

– Complies with IEC60947-2 standards.

Elevation of installation site: ≤2000m

Ambient temperature: -5℃ to +40℃

Relative humidity: not exceeding 50% at the maximum ambient temperature of +40℃. With lower temperature, higher humidity would be permitted, for example, reaches

90% at the temperature of +20℃, and special measures should be taken considering the dews on product surface due to temperature change.

Relative humidity of the humid tropical area breakers isn’t exceeding 95% at the temperature of +25℃.

Pollution protection: 3grade.

Installing categories: III for breakers’ main circuits; II for auxiliary circuit and control circuit without connecting with main circuit.

The breakers used in humid tropical area can work normally without influence of humid air, salt fog and mildew.

There must be not any explosive medium, and there must be not any gas which would corrode metal or any conducting dust which would destroy the insulation.

The place would not be invaded by rain and snow.