Circuit breaker with double-layer cascade structure

Abstract

The invention discloses a circuit breaker with a double-layer cascade structure. The circuit breaker with the double-layer cascade structure comprises an L-shaped stationary contact (7) and a base (10), wherein the stationary contact (7) comprises a contact part (714) and a cascade part (712), and is fixedly mounted on the base (10); the contact part (714) is positioned on an upper layer of the base (10); the cascade part (712) is positioned on a lower layer of the base (10), so that the double-layer cascade structure is realized. By virtue of the double-layer cascade structure, the contact resistance can be reduced, a cascade point which is most beneficial to a conductive loop is selected, the cascade function of the design can be ensured under the condition of short circuit, the insulation level can be improved in a cascade mode, and the appearance size of the circuit breaker is smaller.

Description

technical field [0001] The invention relates to the field of circuit breakers, in particular to a low-voltage direct current circuit breaker adopting a double-layer pole connection structure. Background technique [0002] Since entering the new century, the solar photovoltaic industry has become one of the most concerned emerging industries in the world today. Photovoltaic power generation does not require raw materials and has no gas emissions. It is a "green" industry with pollution-free, safe, long-life, simple maintenance, and resources With characteristics of inexhaustibility and wide distribution of resources, it is considered the most important new energy in the 21st century, and can be widely used in aerospace, communication, energy, agriculture, public facilities, transportation and residential buildings. [0003] With the rapid development of the new energy industry, DC technology has become more and more widely used, especially the working voltage of solar power g...

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