Circuit Breaker Information
Miniature circuit breaker is generally used as supplementary protector for short circuit and overload protection in residential, commercial and industrial areas in accordance with IEC standards, also complying with UL 1077.
Circuit Breaker DimensionsTips: Difference between molded case circuit breaker and miniature circuit breaker1. Current gradeThe current grade of the molded case circuit breaker can reach as high as 2000A while the maximum current of the miniature circuit breaker is within 125A. Because of the volume difference of the two types, in detailed application, the effective area of the molded case circuit breaker is also bigger than that of the miniature circuit breaker. Meanwhile, the connected wire is also relatively thick, which can reach 35 square. However, the miniature circuit breaker is only suitable to be connected with the wire below 10 square.2. Installing meansThe molded case circuit breaker is mainly installed by screws while the miniature circuit breaker is mainly installed through guide rail.3. Operation flexibilityThe overcurrent and short-circuit protective equipment of the molded case circuit breaker are independent respectively. In the operation process, the operate value of the overcurrent protection still can be regulated flexibly. The overcurrent protection and the short-circuit protection of the miniature circuit breaker is the unified equipment. It has a certain deficiency in the regulating flexibility. However, when it is required to improve the safety of the equipment, because the movement of the miniature circuit breaker has a high sensitivity, quick breaking action, it is beneficial for protecting the wire and apparatus.