BML-Series Residual current protective circuit breaker,BML-B Residual current protective circuit breaker with alarm function
BML series residual current protection circuit breaker and bml-b residual current protection circuit breaker with alarm device (referred to as leakage circuit breaker) are the new generation of products that our company has completed r&d and launched in 2018.BML leakage circuit breaker adds display function, memory function and communication function on the basis of previous SBL products.Is currently the smallest volume of leakage circuit breaker.With the characteristics of high breaking ability, complete function, accurate display and reliable movement, it is the leading level in China.BML series leakage circuit breakers have five shell frame grade currents of 160, 250, 400, 630 and 800, rated currents of 16a-800a;Applicable to ac 50Hz and 60Hz;Rated insulation voltage 800V, rated working voltage AC400V.BML leakage circuit breaker can be equipped with shunt tripping device, under-voltage tripping device, auxiliary contact, internal accessories of alarm contact head and external accessories such as electric operating mechanism and rotating handle operating mechanism.
BML-B residual current protection/alarm circuit breaker is a new product derived from BML residual current protection circuit breaker.With leakage fault circuit breaker disconnect or leakage fault acousto-optic alarm circuit breaker constantly open two functions, users can set themselves and the two functions can be converted to AC400V.BML leakage circuit breaker can be equipped with shunt tripping device, under-voltage tripping device, auxiliary contact, internal accessories of alarm contact head and external accessories such as electric operating mechanism and rotating handle operating mechanism.
The normal short circuit setting current of BML series circuit breakers manufactured by MINGRI is 10In, and when the rated current is In 50A, the short circuit setting current Ii is 500A 20%.The circuit breaker protected by the motor is normally short-circuited to set the current at 12In.Short circuit setting current Ii, which can meet other requirements, is 5In ~ 12In.If the customer chooses other multiple short-circuit setting current, please indicate in the order list.
● Model definition and labeling
GB/T 14048.1（IEC 60947-1）Low-voltage switchgear and controlgear - part 1: general provisions.
GB/T 14048.2（IEC 60947-2）Low-voltage switchgear and controlgear - part 2: circuit breakers.
GB/T 14048.4（IEC 60947-4）Low-voltage switchgear and controlgear - part 4-1: electromechanical contactors and motor starters (including motor protectors)
● BML Series product size
● Auxilliary function and code list of BML(SBL) series circuit breaker