SHANGHAI DADA ELECTRIC CO., LTD was established in 2004, is acknowledged as one of the most respected nationwide manufacturers low voltage CIRCUIT BREAKER in China. A wide range products cover miniature circuit breakers(MCB), residual current circuit breakers(RCCB), Residual Current Circuit Breakers With Overcurrent Protection (RCBO), moulded case circuit breakers(MCCB), Air circuit breaker(ACB),Vaccum circuit breaker(VCB),AC Contactor, thermal overload relay, Motor Protection Circuit Breaker, etc.

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    Has a research and development, design, manufacturing automation equipment team It has 6 automatic production lines and 20 automatic equipments More than 10 million RMB is invested every year to continuously introduce advanced equipment and promote production automation

  • Factory tour

    Dada invested to expand its production line and modernize their standard workshops in order to optimize the production of high quality circuit breakers. The stamping workshop, spot welding workshop, riveting workshop, injection molding workshop, and assembly workshop are all configured to maximize the production output of outstanding circuit breakers. The factory covers an area greater than 50,000 square meters and supplies an annual output of 400,000 MCCB and 2,000,000 MCB.

  • Company Profile

    Founded in 1986, SHANGHAI DADA ELECTRIC CO.,LTD  is acknowledged as one of the most respected nationwide manufacturers and exporters of low voltage CIRCUIT BREAKER in China.


  • What is the difference between a molded case circuit breaker and a miniature circuit breaker?


    What is a molded case circuit breaker: Molded case circuit breakers, also known as device circuit breakers, each component is sealed in a plastic case, and the auxiliary contacts, undervoltage releases and their encouraged releases are mainly modularized. Molded case circuit breakers are basicall...

  • May 1 Holiday Notice


    Dear customers, May Day is coming, Shanghai DADA wish you a happy holiday, safe travel! In order to facilitate to arrange the work plan and normal response to the service during holidays, combined with the national holidays and the actual operation of our company, our company’s holiday arra...

  • What is a circuit breaker? What are the classifications of circuit breakers?


    What is a circuit breaker. A circuit breaker refers to a power switch device that can turn off, load and turn on the current under the normal circuit standard within the required time period, and can turn off, load and turn on the current under the abnormal circuit standard within the required ti...

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