The DC box series is mainly used in circuits with AC 50Hz, rated voltage 400V, and rated current up to 3150A. Used for infrequent connection and disconnection of circuits and electrical isolation. The acceleration mechanism with instantaneous release of spring energy storage achieves fast connection or disconnection (13.8 meters/second), which is independent of the speed of the operating handle and greatly improves the ability to extinguish arcs. The shell made of glass fiber reinforced unsaturated polyester resin has good flame retardant performance, dielectric performance, carbonization resistance, and impact resistance. Parallel double break point contacts have self-cleaning effects. All contacts have two separate contact surfaces.
Advantages
The ambient air temperature is not higher than 40 and not lower than-5 C, and the relative humidity is not Greater than 95% The altitude of the installation site shall not exceed 2000m.
Note: If expected to be used under conditions where the ambient air temperature is above 40 ° C or below -5 ° C, the user should inform the manufacturer. No explosion hazard medium, no rain and snow invading the environment.
