1. Introduction
According to the domestic and foreign many years in a circuit breaker operation fault statistics, mechanical failure accounted for 70%-80% of the total fault circuit breaker. For prevention of failure, circuit breaker is taken by minor repairs and overhaul every once in a while. Its operation structure state acquisition is very complicated. When there is a particular type of fault, it may be through the operation structure many condition characteristic common response; Meanwhile, when operation structure of a certain condition characteristic changes, reflects the fault reasons or fault point is not the only. Aiming at circuit breaker failure and running state of the complex relation between, this paper gives a multi-sensor information fusion technology.