Let me introduce you: the internal structure of the distribution box/cabinet

"Distribution box", also known as distribution cabinet, is a general term for electric equipment control center. The switchgear, measuring instruments, protective appliances and auxiliary equipment are assembled in a closed or semi-closed metal cabinet or screen according to the electrical wiring requirements to form a low-voltage distribution device.

Use of distribution box

Reasonable distribution of electric energy, easy to open and close the circuit operation. It has a high level of safety protection and can visually display the on-state of the circuit.

Distribution box principle: According to the electrical wiring requirements, the switchgear, measuring instruments, protective appliances and auxiliary equipment are assembled in a closed or semi-closed metal cabinet or screen to form a low-voltage distribution box. The circuit can be switched on or off by manual or automatic switch during normal operation. In case of failure or abnormal operation, cut off the circuit or alarm with the help of protective appliances. The measuring instrument can display various parameters in operation, and can also adjust some electrical parameters to prompt or signal deviation from the normal working state.

The power distribution cabinet (box) consists of power distribution cabinet (box), lighting distribution cabinet (box) and metering cabinet (box), which are the final equipment of the distribution system. The power distribution cabinet is used in the occasions where the load is relatively dispersed and the circuit is less; They distribute the electrical energy of a circuit of the upper level distribution equipment to the nearest load. This level of equipment should provide protection, monitoring and control of the load.

Power cabinet refers to the electrical control cabinet combination that provides power for the normal operation of all equipment, including contactors, frequency converters, high voltage cabinets, transformers, and so on.

Power cabinet action

1. Power supply for electrical equipment (power supply for equipment);

2. Electric equipment for start-stop operation (with start-stop button);

3, the operation of the detection equipment (set the signal indicator light, ammeter voltmeter);

4. Protect electrical equipment (circuit breakers).

The equipment below the 400v low pressure cabinet, which belongs to the secondary side outlet load is the power facility (such as fans, motors, pumps, etc.), then it is called the power cabinet. The load for lamps, switches, sockets such equipment is called the distribution box.

Distribution box: Small power distribution box containing power switches and safety devices.

Control box: A small control distribution box containing a power switch/safety device/relay (or contactor) that can be used for specified equipment control, such as motor control.

Power distribution cabinet: It is actually a large-scale distribution box, which can provide more power or more channels of power output.

Control cabinet: It is actually a large-scale control box, which can provide more power or more channels of control output, and can also achieve more complex control.

Control panel: Only the front control cabinet, all internal devices are installed on the panel.

The distribution box is mainly divided into two parts

The first is a complete set of parts, that is, the distribution box shell and its related accessories.

The second is the electrical components and related accessories, that is, the air switch and its required accessories.