Circuit breaker wiring method

The wiring methods of circuit breakers include front panel, back panel, plug-in type, and drawer type. If the user has no special requirements, they are all supplied in front panel. Front panel wiring is a common wiring method.
1. Back panel wiring method: The biggest feature of back panel wiring is that when replacing or repairing the circuit breaker, there is no need to rewire, just disconnect the front power supply. Due to the special structure, the product has been configured with a special mounting plate, mounting screws and wiring screws according to the design requirements when it leaves the factory. It should be noted that the reliability of the contact of the large-capacity circuit breaker will directly affect the normal use of the circuit breaker, so it must be taken seriously during installation and installed strictly according to the manufacturer's requirements.
2. Plug-in wiring: On the mounting plate of the complete set of equipment, first install a mounting seat for the circuit breaker, with 6 plugs on the mounting seat and 6 sockets on the connection plate of the circuit breaker. There is a connection plate on the surface of the mounting seat or a bolt behind the mounting seat, and the mounting seat is pre-connected with the power cord and load line. When using, plug the circuit breaker directly into the mounting seat. If the circuit breaker is broken, just pull out the broken one and replace it with a good one. Its replacement time is shorter and more convenient than the wiring before and after the board. Since plugging and unplugging requires a certain amount of manpower. Therefore, the shell current of China's plug-in products is limited to a maximum of 400A. This saves maintenance and replacement time. When installing the plug-in circuit breaker, 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 entry and exit drawer of the circuit breaker is rotated clockwise or counterclockwise by the rocker. The plug-in structure is used in both the main circuit and the secondary circuit, omitting the isolator required for the fixed type, so that one machine can be used for two purposes, which improves the economy of use, and at the same time brings great convenience to operation and maintenance, and increases safety and reliability. In particular, the main circuit contact knife seat of the drawer seat can be used with the contact knife seat of the NT type fuse circuit breaker.