Closer

The utility model discloses a breaker belonging to a mechanical circuit breaking device. The breaker is mainly used for controlling the locking and unlocking motorcar circuit. The circuit comprising an outer cover and a mandrel is characterized in that the mandrel is connected in series with a group of contraposition discs, the through holes at the corresponding positions of the contraposition discs are provided with a conductor. The external circumference of the contraposition discs is rotatablely provided with a number adjusting ring. When the contraposition discs rotate to a specified angle, the unlocking or locking operation is achieved. The circuit breaker has novel conception and reasonable and smart structure. Without using any key, the device can not be opened at all under the circumstance of not knowing the digital code and destructive opening is fairly difficult; therefore, the utility model greatly improves antitheft property. Furthermore, the utility model also has the advantages of low producing cost except easy, convenient installation and application.