BM30 series plastic case circuit breaker (hereinafter referred to as circuit breaker) is one of the new type circuit breakers developed by our company with international advanced design and manufacturing technology. Its rated insulation voltage is 800V (BM30-63 is 500V), suitable for AC 50Hz, rated working voltage 690V and below, rated working current to 1250A circuit for less frequent conversion and motor start-up. The circuit breaker has the functions of overload, short circuit, under-voltage and N-phase breaking protection at the power supply end, which can protect the line and power supply equipment from damage.
According to the rated limit short circuit breaking capacity (Icu), circuit breakers can be divided into three types: L type (standard type), M type (higher type) and H type (high type). The circuit breaker has the characteristics of small size, high interruption, short arc (partial specification zero arc), anti-vibration and so on. It is an ideal product for land and ship use.
The circuit breaker can be installed vertically (i. E. vertically) or horizontally (i. E. horizontally).
This circuit breaker can not be inverted into the line, that is, only 1, 3, 5 power lines, 2, 4, 6 load lines.
This circuit breaker is suitable for isolation (but different from isolation switch).
Compliance with standards
IEC 60947-1 and GB/T 14048.1 "General Provisions for Low Voltage Switchgear and Control Equipment Part 1"
IEC 60947-2 and GB/T 14048.2 "Low Voltage Switchgear and Control Equipment Part 2 Circuit Breakers"
IEC 60947-4-1 and GB/T 14048.4 "Low Voltage Switchgear and Control Equipment Part 4 Contactors and Motor Starters" IEC 60947-5-1 and GB/T 14048.5 "Low Voltage Switchgear and Control Equipment Part 5 Electromechanical Control Circuits and Electrical Appliances"
The volume reduction coefficient at high altitude is shown in Table 6 of the sample volume reduction coefficient.
When the ambient medium temperature is not higher than + 70 (+45 C for marine products) and not lower than - 35 (-35 C), the average value within 24 hours is not more than + 35 (?) C. When the ambient medium temperature is higher than + 40 (?) C, users need to use capacity reduction. The coefficient of capacity reduction is shown in table 5 of samples.
Can withstand the influence of humid air;
It can tolerate the influence of salt fog and oil fog.
It can tolerate the influence of mould.
The maximum inclination is (+ 22.5 degree);
It can work reliably when it is subjected to normal vibration of the ship.
In the medium without explosion danger, and the medium is not enough to corrode metal and destroy insulating gas and conductive dust.
Where there is no rain or snow.
Number of Poles: 3P;
Electric Ccurrent: 125A;
Breaking Capacity: 35kA.