Molded case circuit breaker of DMM1 series,they are one of the new circuit breakers designed by our company. Its rated insulation voltage is 800V,it is suitable for AC 50HZ,Rated operating voltage 690V and below.The device is used in infrequently switched circuits and infrequently started motors. The circuit breaker has the functions of overload, short circuit and under-voltage protection, and can protect lines and power equipment from damage.
1.According to the product poles, it can be divided into two levels: 100A and 225A. There are no four levels in three-pole and four-pole 800.
2. Types of Neutral Pole N Pole in Quadrupole Products. It can be divided into A,B,C,D.
A: N-pole does not install overcurrent tripper, and N-pole is always connected and does not share with other three poles.
B: N pole does not install overcurrent tripper, and N pole is combined with other three poles; N pole is combined first and then divided
C: N-pole is equipped with over-current tripper, and N-pole is combined with other three poles, N-pole is combined first and thendivided.
D: The N-pole is equipped with over-current tripper, and the N-pole is always connected, which is not combined with other three poles.Category Rated current (A )
1.DMM1-63 is 6, 10, 16, 20, 25, 32, 40, 50, 63, grade 9 6A without overload protection.
2.- 100 is 10, 16, 20, 25, 32, 40, 50, 63, 80, 100A, grade 10
3-160 is 100, 125, 140, 160A, four grades.
4.-225 is 100, 125, 140, 160, 180, 200, 225A, grade seven.
5.- 400 is 225, 250, 315, 350, 400A, grade five.
6.- 630 is 400, 500, 630 A, three levels.
7.- 800 is 630, 700, 800A, three levels.
work environment
1. Temperature: - 5 ~+40℃, average temperature within 24 hours does not exceed + 35℃.
2. Relative humidity: when the maximum temperature is 40℃, it is not more than 50%. Higher humidity is allowed at lower
temperature.
3. Elevation below 2000 meters.
4. there is no explosive dangerous medium in the air and no corrosive metal, destroying insulating gas and conductive dust.
5. there is no snow or rain, the pollution level is Grade 3.