Cabinet Body Materials: Typically constructed from high-quality cold-rolled steel sheets, processed and precision-formed using CNC equipment. The steel sheet thickness generally ranges from 1.2 to 2 mm, ensuring structural stability. The protection rating often reaches IP30 or higher, effectively preventing dust ingress and protecting against the intrusion of foreign objects.
Electrical Components: These include circuit breakers-used to interrupt and complete circuits, available in various rated currents and tripping characteristics; contactors-enabling the frequent switching (on/off) control of circuits; thermal relays-providing overload protection for electric motors; and fuses-which blow to interrupt the circuit in the event of an overload or short circuit. Additionally, various other relays, capacitors, and similar devices are included to meet diverse control and power compensation requirements.
Busbar System: Composed of copper or aluminum busbars, this system is responsible for collecting, distributing, and transmitting electrical energy. Busbar specifications are selected based on the distribution cabinet's rated current and short-circuit withstand current; their surfaces often undergo treatments-such as tin plating-to minimize contact resistance.
Secondary Circuit Materials: Control cables are utilized to interconnect various electrical components, facilitating signal transmission and control functions. Wire colors adhere to strict regulations-for instance, red typically denotes the live wire, while blue denotes the neutral wire. Terminal blocks are employed to connect and secure secondary circuit conductors, thereby simplifying wiring installation and maintenance procedures.
Other Materials: These include insulating materials, which serve to isolate live parts and ensure safety; hardware accessories-such as door locks and handles-which ensure the proper operation and security of the cabinet doors; and copper grounding bars, which guarantee the reliable grounding of the electrical equipment.
