The MDWH miniature circuit-breaker (MCB) line offers protection against overload and short-circuit in electric conductors, complying with the tripping characteristic of curve C, according to standards IEC 60898 and IEC 60947-2. Developed to be used in low voltage circuits with direct or alternating current from 2 to 125 A and short-circuit breaking capacity up to 10 kA, the miniature circuit-breaker line includes as accessories: auxiliary contact blocks, single, two and three-pole distribution busbar, and padlock, according to the requirement of safety standards. It also includes trip free mechanism, in which the trip is independent from the handle, and circuit-breaker status indication.

Tripping Characteristic Curves

Curve C The characteristic of the miniature circuit-breaker of the C curve is the instantaneous trip for currents 5 to 10 times above the rated current. Therefore, they are used for the protection of circuits with installation of inductive loads. E.g.: fluorescent lamps, refrigerators, washing machines, etc.'s