circuit breaker DZ20LE-250/4300

Product Description

1. DZ20LE series earth leakage circuit breaker (mccb) is a current operated electronic protective devices of residual current, mainly used in AC 50Hz, circuit with rated voltage 380V, rated current to 630A.

2. it used for physical electric shock protection, and protect equipment from isolating damage and ground fire danger cause by earth fault current, used for distributing electric energy, protecting circuit and power equipment against overload and short-circuit, also can be used for unfrequent switch over of circuits.

3. It confirms to GB6829-95 and GB14048.2-2002 standard.

Temperature of ambient air:

a. Upper limited not exceed +40 degrees;

b. Lower limited not less than -5 degrees;

c. Average within 24h not exceed +35 degrees.

Normal working condition:

1. Elevation to install should not exceed 2000m.

2. When temperature of ambient air is +40 degrees, the atmospheric relative humidity should not exceed 50%, when the temperature is lower, the relative humidity can be higher, the lowest average temperature can not exceed +25 degrees in the most humid month, and the highest average relative humidity can not exceed 90% in this month.

3. As well, because of the change of temperature, the coagulate dewdrop in the surface of the product should be considering.