FTM2 series intelligent type molded case circuit breaker is the newest product with intelligence, residual current protection and communicative function which is cooperated with relevant department. Compared with similar products in domestic, FTM2 has characteristics as follows: 1. Firstly make one breaker have overload protection, short-circuit delay protection, short-circuit instant protection and residual current protection at the same time; 2. Firstly invent thermo-magnetic product. Thermo-magnetic product with residual current protection and intelligent product (with communicative function and residual protection) are same in outline dimension and installment dimension. These series products are awarded many patents and its technology reaches the international advanced level. These series products have 5 types (rated current between 20 to 800A) 1. FTM2 molded case circuit breaker (thermo-magnetic type) 2. FTM2L molded case circuit breaker with residual protection 3. FTM2E intelligent molded case circuit breaker (protective function of overload, short-circuit, short-circuit instant, short-circuit short delay, break-phase and pre-alarming, etc.) 4. FTM2L intelligent MCCB (multiple protective function of intelligent type with residual protection, to-earth protection, overload, short-circuit instant, short-circuit short delay, break-phase and pre-alarming, etc.) 5. FTM2T intelligent communicative MCCB (intelligent communicative interface with residual and to-earth protection, multiple protective function of overload, short-circuit instant, break-phase and pre-alarming.) Usage and applicable range: FTM2 series intelligent type molded case circuit breaker applies to low-voltage electric network with AC50Hz, rated current between 16 to 800A, rated insulation voltage 690V and rated working voltage 400V and below. It can be used to protect body shock, touch directly, prevent leakage and fire accident caused by equipment damage. Meantime, breaker adopts intelligent and electric over-voltage release composed by micro-processor, adjust rated current and over-current protection characteristic so as to match power distribution circuit motor load. In normal condition, breaker is suitable for turn-on or turn-off not frequently and starting a motor not frequently. Standards: 1. low-voltage switchgear and controlling equipment, general 2. Low-voltage switchgear and controlling equipment, low-voltage circuit breaker. 3. Low-voltage switchgear and controlling equipment, low-voltage electro-mechanical contactor and motor starter. 4. Low-voltage switchgear and controlling equipment, control circuit and switch component first part: electro-mechanical circuit equipment. 5. General requirement of residual protector.