The "intelligent guard" that guards the lifeblood of modern power - unveils the frame circuit breaker

Frame CIRCUIT breaker, the scientific name of AIR circuit breaker, also has his evolution of intelligent universal circuit breaker, in English we collectively refer to AIR CIRCUIT BREKER(abbreviation: ACB).
The ACB produced by our company is mainly suitable for AC 50Hz, rated working voltage to 690V and below, rated current 400A-6300A distribution network, its metal frame integrates the contact system, arc extinguishing chamber and intelligent release device, just like installing a "safety lock" with independent judgment for the circuit. Used to distribute power and protect lines and power equipment from overload, undervoltage, short circuit, single-phase grounding and other faults. And its built-in three-stage protection mechanism will respond hierarchical: overload delay 15-30 minutes alarm, serious short circuit is cut off the circuit at the millisecond level. He's like a neurosurgeon for the electrical system, able to cut out lesions in an instant.
The ACB independently developed by our company is a three-dimensional layout, which has the characteristics of compact structure, small volume and zero flashover. The contact system is closed in the insulated bottom plate, and each of the contact heads forms a small chamber, while the intelligent controller, manual operation mechanism and electric operation mechanism are successively lined up in front of it to form their own independent units, which is easy to maintain and repair. ACB has two kinds of installation methods: drawer type and fixed type. The fixed circuit breaker is mainly composed of contact system, intelligent controller, manual operation mechanism, electric operation mechanism, fixed installation plate and so on. Drawer type circuit breaker is mainly composed of contact system, intelligent controller, manual operation mechanism, electric operation mechanism, drawer seat, insert circuit breaker placed in the drawer seat on the guide rail to enter and exit.
The drawer type circuit breaker has three working positions, respectively, "connection", "test" and "separation" position, the position change is realized by rotating the handle, the indication of the three positions is displayed by the pointer on the bottom beam of the drawer, but when it is in the "connection" position, the main loop and the secondary loop are connected; When in the "test" position, the main circuit is disconnected and separated by an insulating partition, only the secondary circuit is connected, and some necessary operating tests can be carried out; When in the "separation" position, the main circuit and the secondary circuit are all disconnected, the drawer circuit breaker has a mechanical interlock device, the circuit breaker can only be closed in the connection position and the test position, and the circuit breaker can not be closed in the middle position of the connection and test.