Industrial plugs and sockets refer to power plugs and sockets that are applied in industrial environments. They are usually installed on equipment or devices to provide the transmission of electricity and signals. With the continuous improvement of industrial automation and electrification, industrial plugs and sockets, as important power and control equipment, usually have stronger current carrying capacity, higher durability and reliability, and can withstand harsh environmental and working conditions. They have been widely used in various industrial applications.
I. Specifications and Features of Industrial Plugs and Sockets
(1) Current ratings: 16A, 32A, 63A, 125A.
(2) Protection rating: Generally divided into IP44 and IP67. IP44: It can prevent harm from water sprayed from all directions and solids larger than 1mm. IP67: It can prevent submersion under 1.5m of water (immersion time of 30 minutes) and completely prevent the risk of dust.
(3) Color classification: According to the conventional working voltage in China, they are divided into 220V (blue) and 380V (red). Additionally, there are unconventional voltages such as 110V (yellow) and 500V (black) through transformers or other forms.
II. Types of Industrial Plugs and Sockets
(1) Flush-mounted straight sockets: They are usually installed by drilling holes on the equipment (chassis shell) and can be mounted anywhere. If installed on the wall (requires a base box), they are often used for power distribution in equipment such as distribution boxes, distribution cabinets, injection molding machines, stage lighting, audio equipment, and control systems.
(2) Flush-mounted oblique sockets: They are also installed by drilling holes on the equipment (chassis) shell and mounted on the wall (requires a base box). However, sufficient insertion and extraction space must be maintained from the ground during installation. They are commonly used in equipment and scenarios such as power distribution boxes, iron and steel smelting, petrochemical, and construction sites.
(3) Surface-mounted sockets: They are generally installed on walls (or floors) without the need for a base box. However, sufficient insertion and extraction space must be maintained from the ground. Common applications include power distribution in factories, computer rooms, exhibition halls, and injection molding machines.
(4) Connectors: They are generally used as cable extensions for aerial docking. They are matched with plug flush-mounted socket inputs and surface-mounted socket inputs. Common applications include power distribution in distribution boxes, stage lighting and audio equipment, construction equipment, and tunnel engineering.
III. Characteristics of Industrial Plugs and Sockets
(1) Safe and reliable: First, the color indicates the voltage, which is easy to distinguish and avoid confusion. Second, different specifications have different diameters, pole numbers, and grounding contact positions, ensuring that only the same specifications can be connected to prevent misinsertion. Third, there is electrical shock protection. The grounding pole socket in the socket is longer than the phase pole and neutral pole sockets, ensuring that the grounding pole is connected before the phase pole and disconnected last when unplugged, making it very safe to use. Finally, these products also emphasize safety and reliability in material selection and design.
(2) Durable: Industrial plugs and sockets generally have excellent mechanical performance, high strength, resistance to impact, falling, or stepping. They are heat and flame resistant, with a temperature resistance of up to (100±5)°C for the outer shell and internal insulating parts, and can withstand (125±5)°C for critical components. They are also flame retardant. Industrial plugs and sockets are usually more resistant to insertion and extraction, with a temperature rise test of no more than 50K for conductive contact parts (pins and sockets), suitable for long-term use.
(3) Durable: Industrial plugs and sockets generally have excellent mechanical performance, high strength, resistance to impact, falling, or stepping. They are heat and flame resistant, with a temperature resistance of up to (100±5)°C for the outer shell and internal insulating parts, and can withstand (125±5)°C for critical components. They are also flame retardant. Industrial plugs and sockets are usually more resistant to insertion and extraction, with a temperature rise test of no more than 50K for conductive contact parts (pins and sockets), suitable for long-term use.