When choosing a low-voltage distribution cabinet, the following key aspects need to be focused on. 1. Cabinet structure and materials High-quality cabinet structure is the basis for ensuring the performance of the distribution cabinet. The cabinet should have sufficient strength and rigidity to withstand the weight of internal electrical components and possible external impacts. Generally speaking, cold-rolled steel plate is a common and reliable cabinet material, and the thickness must meet the corresponding standards to ensure that the cabinet is stable. At the same time, the protection level of the cabinet is also crucial. For example, in a humid or dusty environment, you should choose a power distribution cabinet with a higher protection level, such as IP54 and above, which can effectively prevent the intrusion of foreign objects and water splash. 2. Quality of electrical components The quality of the electrical components in the distribution cabinet directly determines the reliability of its operation. The circuit breaker should be selected appropriately according to the load type and current size, and it must have reliable short-circuit protection and overload protection functions. The contactor should be able to connect and break the circuit stably, and the material and capacity of its contacts should meet the usage requirements. The relay must ensure the accuracy and sensitivity of the action. At the same time, pay attention to the brand and quality certification of electrical components, and give priority to products from well-known brands that have passed relevant international and domestic standard certifications, such as 3C certification. 3. Busbar system The busbar is a key part of power transmission in the distribution cabinet. The material of the busbar is generally copper or aluminum. Copper busbar has good conductivity but has a high cost. Aluminum busbar is relatively light and low-cost, and can be selected according to actual needs. The current carrying capacity of the busbar must meet the rated current requirements of the distribution cabinet, and a certain overload margin must be considered. At the same time, the busbar connection method must be firm and reliable to reduce contact resistance and prevent overheating. 4. Function and configuration The functions of the power distribution cabinet should be determined according to the actual usage scenario. For example, whether it is necessary to have electric energy measurement function, whether it is necessary to configure an intelligent monitoring system, etc. For places that require remote monitoring and management, distribution cabinets with communication interfaces and intelligent measurement and control modules can easily realize real-time monitoring of electrical parameters and fault alarms, facilitating timely maintenance and management. 5. Safety performance Safety is one of the core factors in the selection of low-voltage distribution cabinets. The power distribution cabinet should have a complete grounding system to ensure that current can be safely directed to the earth in the event of leakage or other faults. At the same time, pay attention to the insulation performance of internal electrical components to prevent short circuits between phases and to ground. In addition, safety designs such as cabinet door interlocking devices cannot be ignored to avoid dangers caused by misoperation. When selecting a low-voltage power distribution cabinet, comprehensive consideration of these precautions can ensure its safe, stable and efficient operation in actual use.