An overview of the

3TW1 series intelligent universal type circuit breaker used for control and protection of low-voltage distribution network. General installation rule in low voltage power distribution ark switch total protection role. Its technical performance has reached their type on the contemporary international advanced level.

• Rated current630A~6300A;

• Short circuit breaking capacity80kA~120kA(RMS);

• Rated voltage up to and AC690V;

• 3 and 4 pole;

• Draw-out type and fixed type;

• can be poured into line installation;

• A variety of intelligent controller, providing different functions;

• perform IEC60947-2, GB14048.2 standards.

The normal working conditions and installation conditions

• Ambient air temperature is 5 ℃ ~ + 40 ℃, 35 ℃ and average no more than 24 h + (special orders except);

• Installation location of altitude does not exceed 2000 m;

• Installation site of air relative humidity in the highest temperature is + 40 ℃ not more than 50%; At low temperature can be allowed to have a higher relative humidity, such as 20 ℃ at 90%. Due to temperature change occasionally produce condensation special measures should be taken.

• Pollution levels for level 3;

• Circuit breaker main circuit and undervoltage trip coils, power transformer primary coil installation type IV, the rest of the auxiliary circuit, control circuit installation type III;

• Circuit breaker shall be installed in accordance with the manual installation requirements. Circuit breaker vertical slope of no more than five & deg; ;

• Circuit breaker installed in the cabinet put oneself in another's hours, protection grade reaches IP40; Add frame, protection grade up to IP54.