Domestic first, miniaturized, intelligent, modular, integrated, self-matching CPS series of motor control and protectionproducts, is Changshu switch carefully developed another product.CBl series control and protection switchgear (hereinfter referred to asCB1)integrates the main functions of circuit breaker, contacter, overload relay and isolator into one. lthas the characteristics of high short-circuit breaking ability,long service life, good coordination and cooperation,full pro-tection function, high intelligence, simple system design, convenient installation and debugging, energy saving and material saving, etc. lt can effectively reduce the type, specification and quantity of products in the motor control system, andsolve the problem of coordination and cooperation between discrete components.lt is an ideal basic component inlow-voltage power distribution and control system.