Application

CSDM5HU series high voltage circuit breaker (referred to circuit breaker) is specially designed for high voltage electrical system with rated voltage up to 1140V and rated current 63A~800A.

This circuit breakers can effectively protect electrical systems like the output loading of the string Inverters and others such as the loading capacity of the AC combiner box in the photovoltaic systems.

Meet the standard:

GB/T14048.1 Low-voltage switchgear and control equipment - Part 1:
General Rules

GB/T14048.2 Low-voltage switchgear and control equipment - Part 2:
Circuit breakers

Normal Working Conditions and Installation Conditions

•The elevation of the installation site can't exceed 2000m;

•The temperature is not higher than +70°C, not lower than -45°C(Over +40°C , use it through capacity reduction, the specific need to negotiate with the manufacturer);

•Atmospheric conditions: such as 90% at 20°C, and taking into account the condensation on the surface due to temperature changes, When the arounding temperature is 40°C, the relative humidity of the atmosphere does not exceed 50%, and a higher relative humidity is allowed at a lower temperature.

•The pollution level is 3;

•Installation category is III;

•Installation magnetic field: The magnetic field of the installation position does not exceed 5 times the earth magnetic field in any direction;

•In a medium without explosion risk, and there is no gas and conductive dust sufficient to corrode metal and destroy insulation in the medium;

•Where there is no snow erosion;

•Installation conditions: It can be installed horizontally or vertically. There should be no significant impact or vibration at the installation place.

•It should not be installed in inflammable and explosive places.

•The circuit breaker has the isolation function, the symbol is

Quick Selection Table

The Cross-sectional Area of The Connecting Wire and The Corresponding Rated Current

Main Technical Data

Note: 1. Line: 1, 3, 5; Load: 2, 4, 6;
          2. The installation method of arcing cover

Retention

The thermal release of circuit breakers have the particularity of inverse time limit; The electromagnetic release is an instantaneous action, and its characteristics are shown
in the table below.

•Power distribution

•Power loss table

•The capacity reduction coefficient of the rated operating current of the thermal release as a function of the ambient temperature

Note: When the ambient temperature is lower than 50°C, the product can be used normally, and there is no capacity reduction.

•Elevation reduction

If the altitude exceeds 2000m in the applicable working environment, the electrical performance of the circuit breaker can be referred to the following table.

Tripping characteristic curve

Description: The characteristic curve is measured under cold, three-phase load.