Circuit Breaker Wiring Method

The wiring methods of circuit breakers include front panel, rear panel, plug-in type, and drawer type. If the user has no special requirements, the circuit breaker will be supplied as front panel. Front panel wiring is a common wiring method.
1. Back-board wiring method: The biggest feature of behind-board wiring is that the circuit breaker can be replaced or repaired without rewiring. Just disconnect the front-end power supply. Due to the special structure, the product has been equipped with a special mounting plate, mounting screws and wiring screws according to the design requirements when it leaves the factory. Special attention should be paid to the fact that the reliability of the contact of the large-capacity circuit breaker will directly affect the normal use of the circuit breaker. Therefore, during installation Attention must be paid to installation in strict accordance with the manufacturer's requirements.
2. Plug-in wiring: On the mounting plate of the complete device, first install a circuit breaker mounting base with 6 plugs on the mounting base and 6 sockets on the circuit breaker connecting plate. There is a connecting plate on the surface of the mounting base or bolts behind the mounting base. The power cord and load line are pre-connected to the mounting base. When in use, insert the circuit breaker directly into the mounting base. If a circuit breaker goes bad, just pull out the bad one and replace it with a good one. Its replacement time is shorter and more convenient than front-board and rear-board wiring. Because plugging and unplugging requires a certain amount of manpower. Therefore, the frame current of China's plug-in products is limited to a maximum of 400A. This saves repair and replacement time. When installing a plug-in circuit breaker, you should check whether the plug of the circuit breaker is pressed tightly, and the circuit breaker should be securely fastened to reduce contact resistance and improve reliability.
3. Drawer-type wiring: The drawer of the circuit breaker is rotated clockwise or counterclockwise by the rocker. It is used in both the main circuit and the secondary circuit.
The plug-in structure omits the isolator necessary for the fixed type, allowing one machine to be used for two purposes, which improves the economy of use, brings great convenience to operation and maintenance, and increases safety and reliability. In particular, the main circuit contact holder of the drawer base can be used in common with the NT type fuse contact holder.