Molded case circuit breaker

Provided is a molded case circuit breaker. The problem that the temperature rise of a wiring mechanism of a current molded case circuit breaker is generally too high is mainly solved. The LED lamp is characterized in that the first lug plate and/or the second lug plate are/is provided with a heat dissipation seat (5) made of a heat dissipation material, and the heat dissipation seat is installed in the base and provided with a heat dissipation groove (51). According to the molded case circuit breaker provided by the utility model, the lug plate is installed through the heat dissipation seat, the temperature rise is reduced, and the service life is prolonged. 一种塑壳断路器。主要解决目前的塑壳断路器的接线机构温升普遍偏高的问题。其特征在于：所述第一接线片和/或所述第二接线片上设有散热材质制成的散热座(5)，所述散热座安装于所述基座内且设有散热槽(51)。本实用新型提供一种塑壳断路器，通过散热座来安装接线片，降低温升，增加使用寿命。