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The industrial plug and socket have the ability to support higher currents and voltages. This is why industrial plugs and sockets are suitable for use in polyphase systems with high currents. They are also ideal for use in scenarios where you need protection from environmental hazards.
Industrial plugs are typically used for any type of industrial sockets.
The movable industrial socket is used in extended power supplies.
Schuko plug and socket are equipped with protective-earth contacts.
Wall-mounted industrial Sockets are mounted on walls or equipment surfaces.
Panel Mounted Industrial Sockets are typically used for cabinets or equipment.
The panel of Angled Mounted Industrial Socket is angled with the inclined seat.
Junction Boxes can be customized in different sizes and industrial sockets.
Reverse industrial plugs are fixed plugs, used for any type of industrial connector.
Certificate of Industrial Plug and Socket
CE Certification
The CE marking is a mandatory European marking for Industrial plugs and sockets to indicate conformity with the essential health and safety requirements set out in European Directives, also recognized worldwide.
ISO 9001 Certification
The standard is used by organizations to demonstrate their ability to consistently provide Industrial plugs and sockets that meet customer and regulatory requirements and to demonstrate continuous improvement.
China Quality Certification
The CQC is the largest professional certification body in the People’s Republic of China. The CQC Mark demonstrates the conformity of the product with the Chinese standards in regards to quality, safety, environmental and energy efficiencies.
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industrial plugs and sockets guide 2023
OVERVIEW
Industrial products are different from the ones found in your household. They have the ability to support higher currents and voltages. This is why industrial plugs and sockets are suitable for use in polyphase systems with high currents. They are also ideal for use in scenarios where you need protection from environmental hazards.
Industrial outlets have several important supporting features. They have weatherproof covers or waterproof sleeves. Some industrial sockets come interlocked with a switch. This switch will help from accidentally disconnecting when connected to an energized plug. Besides, some industrial connectors are approved for use in “high-risk” areas, for example, in places like petrochemical plants and coal mines. These places have flammable gases, which can pose a threat.
What is CEE FORM?
The CEE Form, or the CEEForm, stands for Certification of Electrotechnical Equipment. This is a certificate issued for electrical products, and useful to trade electrical products globally.
The CEE standards are an essential feature you must clearly understand. The CEE has a series of standards for electrical products. The best-known CEE standards are the CEE 7, CEE 13, CEE 17, and CEE 22.
-The CEE 7 is the standard used for household plugs and sockets.
-The CEE 13 is the standard used for cables and cords.
-The CEE17 is the standard used for industrial plugs and sockets.
Today, the CEE 17 is known as the IEC 60309 (formerly called the IEC 309). This is an international standard governed by the International Electrotechnical Commission (IEC). The IEC 60309 regulates industrial plugs, sockets, outlets, and couplers. In Europe, industrial connectors are made to the IEC 60309 standard. Various other criteria based on IEC 60309 include the BS EN 60309-2 and the BS 4343. The IEC-60309-2 is the standard used for industrial plugs and sockets.
In the United Kingdom, these standards are called CEEFORM, CEE plugs, CEE industrial, or commando connectors. The ‘CEE’ in CEEFORM sockets and CEEFORM plugs refer to the CEE17 standard. Remember, all these names refer to industrial plugs and sockets. These standards will help you distinguish between a good product and a bad one. So make sure you have a good understanding of these standards before you buy. It will help you choose the best industrial products! In general, the CEEFORM plugs and sockets refer to the industrial plugs and sockets that has a:
-Voltage below: 1000V (AC or DC)
-Current below: 800 A
-Frequency below: 500 Hz
-Environmental Temperature Range: -25℃to 40℃
Usage scenarios for different industrial plug and socket models
Industrial plug: This is similar to the plugs in the electrical equipment of our households. Used for any type of sockets.
Industrial Connector: This is a movable socket used in extended power supplies. They are suitable for portable use too.
Wall-Mounted Industrial Socket: This is mounted on walls and equipment surfaces. The wires that connect to this socket are on the wall and the device’s body.
Panel Mounted Industrial Socket: Typically used for cabinets or equipment. The user will fix the main body of this product on the surface. And the wiring inside the equipment or panel is not visible.
Angled Mounted Industrial Socket: This socket has a similar function to the panel-mounted ones. But the significant difference is the socket and the panel of the concealed inclined seat are angled. It does not have a typical 90-degree angle.
Reverse Industrial Plug: This is a fixed plug. You can expect only connectors to work with it. This reverse plug is divided into the panel and wall-mounted plugs. The installation form of the plug is similar to the one on the socket.
Pins of Industrial Plug and Socket
The pins are vital for any industrial plugs and sockets. You must understand some of the important facts about pins. This is what will determine the quality of the product. A reputable manufacturer and an efficient design will make quality pins.
Brass pins are conductors. The brass rods are said to be a vital component of industrial plugs and sockets. There are two main features you must be aware of:
Length of Industrial Plug and Socket's Pins
The IEC 60309-2 standard specify the length and the diameter of the brass rod. Only these rods will be able to meet the voltage and current specified. They must not be shortened or lengthened. It should follow the exact measurements of the IEC 60309-2 standard.
Length Of The Industrial Plug And Socket's Wiring PLace
This is where the brass pins connect to the wiring. The longer the wiring, the better it will be. The length reflects the quality of this product. Many manufacturers try to shorten this length and hollow the inside of the brass rod. Take note of this. Always go for longer lengths for a quality experience.
The pins are inserted into the plastic sleeve of the industrial products made out of yellow brass. Our products not only look into the length of the brass rods on the contact surface. It goes a step further.
Hollow Or Solid Brass Pins Of Industrial Plug and Socket
You can find the brass pins as a solid or a hollow product. Although they may look the same from the outside, there is a price difference. If you choose to buy a first-generation product, it will be the most economical. However, the rods are hollow in most cases. These products can get easily burnt out as there is an insufficient cross-sectional area for conduction.
Many factories produce brass pins as hollow. In our factory, we specialize in both! Our company sells products of IEC-60309-2 standards only. This offers both reliable and quality products. If customers require hollow pins, we can customize them according to their needs.
Sleeve of Industrial Plug And Socket
The IEC standard not only clearly stipulates the brass pin but also the size of the plastic part. There are many products on the market, reducing the size of plastic parts and pins. Such products have great safety risks. We also should pay particular attention to the size and the thickness of the plastic sleeve. This is vital for versatile products!
Which Material Should We Choose, Nylon or PP?
The shell of the industrial plugs and sockets is made out of plastic. You can generally find Nylon 66 (PA66) or PP (Polypropylene) products in China. The manufacturer sets the price according to craftsmanship and appearance. Factors like the shell, the length, and the brass bar material will also affect the final price. Nylon 66 industrial plugs and sockets are much better than PP. In this section, let’s take a quick look into why that is the case.
The Material Of Industrial Plug And Socket: Nylon(PA66)
Nylon 66 is the best material to maintain stability, especially in systems that use excessive heat or chemical resistance. They are also used when a product needs rigidity and high mechanical strength. They can be utilized with halogen products due to their fire-proof nature. Besides, Nylon products are used in the electrical and electronics industry (E&E). Thus, their design tends to meet the UL 94 flammability, FWIT, FWFI, and CTI testing.
Considering all this, we can say that many features make Nylon 66 ideal for industrial plugs and sockets. Nylon 66’s high melting temperature and high compression strength are important features. Also, it can operate in a wide range of temperatures, and it is fire-proof!
The Material Of Industrial Plug And Socket: PP(Polypropylene)
PP or Polypropylene is a thermoplastic polymer that is widely used. It is both flexible and tough. This is true when ethylene is used to polymerize the PP. Because PP is more economical used compared to materials like ABS (acrylonitrile butadiene styrene).
The PP’s melting point occurs over a range. A calorimetry chart can help locate the melting point. The commercial-grade PP usually has a melting range starting from 160℃ to 166℃. When PP is exposed to a temperature under 0℃, it becomes brittle!
Therefore, we can conclude that Nylon 66 is better than PP for industrial plugs and sockets. The industrial Nylon 66 is better than the PP shell.
In terms of pressure, service temperature, and wear resistance, Nylon is the optimal option. Besides, the long term thermal stability of PP is also poor. When exposed to temperatures below 0℃, PP can become brittle. Therefore, Nylon has a more extensive temperature range than PP. On the other hand, Nylon shell has lengthy outdoor usage. PP tends to age and crack when exposed to UV rays.
So how can you tell the difference between the two? If you want to differentiate between the two products, there is a way to do so. All you have to do is ignite it.
There is a characteristic smell between the two products to help distinguish between the two. Nylon has an odor similar to burning hair/nails and wool. PP has an aroma of petroleum products and smells acrid.
New Or Recycled Material Of Industrial Plug And Socket
Many manufacturers use recycled materials to reduce costs. We must be vigilant about this. Should you use recycled materials? Or new raw materials? The performance of products is much better with raw materials than recycled materials. The industrial plugs and sockets that use recycled materials have a few drawbacks. It will not have high strength and toughness. Even the color will not be up to standard.
Many businesses tend to use recycled materials that are heavyweight plastics. These materials will be low priced too. Manufacturers will try to convince you by saying the quality of a product depends on its weight. Therefore, the heavier weight, the better the quality. However, remember, the performance is much reduced by using recycled materials!
4 Main Parameters Of Industrial Plugs And Sockets
You must be aware of certain things related to industrial plugs and sockets before you buy them. Here are 4 must-know facts before you visit the Chinese factories:
1) The Voltage And Current
First-time buyers will get confused with the colors of the industrial products. These colors are precise and regulated. These are the colors you will come across:
Blue: for products of 230V
Red: for products of 400V
White: for products below 50V (very low voltage)
Purple: for products of 20V
Black: for products used in the entertainment industry.
2) Poles Of Industrial Plug And Socket
Industrial plugs and sockets come with different pole configurations. You must also be familiar with these before you buy. The pole configuration refers to the number of pins in the industrial plugs and sockets. The 3 common types are:
-3P (2P+E): refers to 3 poles or single phase;
-4P (3P+E): refers to 4 poles or 3 phase;
-5P (3P+N+E): refers to 5 poles or 3 phase.
3) The Earth Position Of Industrial Plug And Socket
Always read the specifications of industrial plugs and sockets. You will find values like 4H, 6H, and 12H. Wondering what that is? Well, these are called the earth position. The ‘H’ actually refers to the hour. The 4H will refer to the 4:00 position in the clock. We use a clock map to decipher the Earth’s position. Take a quick look at the map below to have a clear understanding:
So how do you read this map? For example, say the earth position of your product is 6H. Then the international standards and the clock map will point to one thing. The 6H will refer to the voltage of plugs and sockets as 220V-250V or 380V-415V.
4) The Waterproof Ratings Of Industrial Plug And Socket
The final ‘must know’ fact is the waterproof rating. At times, you need these products to work in extreme environments. These are places where ordinary products will not work. In such cases, you need waterproof industrial plugs and sockets. As the name suggests, these products are both waterproof as well as dust resistant. The main waterproof products you will find are the IP44 and IP67. The numbers in these names refer to how dust or waterproof the product is!
Industrial products are divided into either IP44 or IP67, where IP44 is dust-proof and IP67 is waterproof. Here are some important features you must know about the two:
-IP44: Often referred to as “splash proof”. It can protect objects bigger than 1mm in size, and water sprays from all directions.
-IP67: We call it waterproof. It is also referred to as ”dust-tight”. It can protect against temporary immersion in water. It can withstand a depth of 1 meter in water for up to 30 mins. The products have rubber padding, which gives the waterproof effect.
Additional Information On Wiring And Pilot Contact:
Wiring Of Industrial Plug And Socket
Also, take note of some key factors when wiring. When you take a closer look, you will see a few letters marked near the terminal:
L: stands for a live wire. You can connect either the red or brown wire here.
N: Stands for the Nought wire. You can connect either the white or blue cables.
Ground Mark: Stands for the ground wire. You must connect the cables of mixed colors of yellow and green.
Pilot Contact Of Industrial Plug And Socket
The 63A and 125A connectors will equip with a 6mm pilot contact. This is a smaller pin at the center of your connector. They are designed to protect from electrical interlocking and can be used for other ‘control’ purposes. They ‘make’ once all the pins are connected in a plug and socket and ‘break’ first when disconnected. It is used to switch offload.
When disconnecting under load, one may encounter two problems. First, it may cause damage to the plugs and sockets. Second, it may cause significant injury to the user. With the pilot contact in place, you can avoid both types of damages!
The 3 Main Types Of Mainstream Industrial Plugs And Sockets
Here in China, you will find 3 mainstream types of industrial plugs and sockets. These three types of products are all the same in regards to the contact surface. The clients can see the difference among the 3 in the wiring and shape of the tail. Our company has named them:
1) The Economical Type Industrial Plug And Socket
The design of this type of product is the simplest. The 16 and 32 amp plugs and sockets comply with IP44. The 63 and 125 amp comply with IP67. You can expect a low cost.
2) New-Generation Type Industrial Plug And Socket
The New generation products have a significant upgrade, especially in its appearance. The plug and the connectors also use a unique push type to separate the plug and sheath. In this type of product, you will find that connecting wires is easy! Besides, you will also find a plug with an attached knob at the end of the sheath. This is used to fix any cables. This is also common for the mid-to-high-end budget. The brass and plastic rods in this product are longer than in the economic products.
3) High-End Type Industrial Plug And Socket
This is the latest product manufactured by our company. It is a high-end product! Both the length of the plug and connector sheath has been increased. On top of that, the plug and the sleeve are designed as a whole. This will be more fitting to hold! The product can now connect the socket and plug easily! You will also be utterly pleased with the appearance. Only the best raw materials are used to manufacture these industrial products. This is the first choice for customers looking for high quality!
Applications Of Industrial Plugs And Sockets
In this section, let’s take a quick look into the applications of industrial plugs and sockets. We will also see which type, the IP44 or the IP67, is suitable for you.
Industry | IP44 | IP67 |
Agriculture | Portable equipment or in appliances stored within sheltered premises. | In outdoor installations used for ventilation, drying or pumping. |
Chemical industry | Used for indoor premises. For maintenance and storage purpose when not exposes to chemicals. | In places where there is no risk of explosion. But where connections are exposed to chemicals. |
Shipyards and Construction sites | In sheltered constructions sites. Must be protected against weathering but can be exposed to water splashes. | In outdoor constructions sites where the connections are exposed to the damp ground. Exposed to dust, weathering and freezing. |
Sports and entertainment complexes | In sheltered premises. Must be protected against weathering. Can be exposed to splashing but must not have high connected loads. | Outdoor connections that are exposed to rain, mud, snow, freezing, and other extreme weather. Also, where you need mated safety. For high voltage in TV. audio and lighting. |
Food industry | In sheltered indoor premises. Used for maintenance and storage. | In premises where washing down by hoses takes place. Also, where connections are prone to heavy- duty. |
Heavy industry | In sheltered warehouses, assembly areas, molding areas, and maintenance workshops. | In rolling mills, blast furnaces, foundries. Here the connections are exposed to metallic shavings, dust, coolants. They are prone to impact and vibrations. |
Light industry | In premises without high humidity and ambient pollution. Serves for moulding, storage, maintenance and assembly. | In premises where you clean with chemical solvents. Also, in places where heavy load connections need high safety. |
IT center installations | For an electrical connection that is above the floor level. | For an electrical connection under the raised floor and where there is a risk of immersion. Also, where heavy load connections need high safety. |
Ports | In sheltered locations like repair shops, docks and offices, etc. | Piers, docks, quays etc. In places where there is a risk of partial flooding and high waves. |
Airports | Sheltered locations like hangars, warehouses, repair shops, etc | Used outdoors. For a connection between aircraft and portable or mobile appliances. |
Water treatment plants | Indoor use. Repair shops etc. | All locations where there is a risk of flooding. Also, outdoor use for ventilation systems, pumps, and aeration. |
What Can You Expect From Our Company?
Our company uses high-quality raw materials to ensure the best products in the market. All the raw materials we use have more than two suppliers. By communicating with multiple suppliers, we get the best batch of raw materials at a good price! Also, if a supplier cannot meet deadlines, we can contact others as soon as possible. This will minimize delays in our production.
Our company has 17 injecting molding machines and 10 automatic screw machines. These machines work 24/7, all days of the week. With 30 assembly workers on site, we produce 25,000 PCS plugs and sockets every day!
To ensure quality products, our company works with the most advanced ERP system. The ERP system help to procure raw materials. It helps manage production to sales efficiently! Through this process, we are able to locate any issues present in our products. Thus, we can rectify the problems swiftly.
Before industrial plugs and production, we do internal inspections. This mainly checks whether the accessories used are reliable. We also make sure the plastic components have a clean and beautiful finish! Finally, we make sure that the assembly of the products meets all the high standards set. This is why you cannot go wrong with our industrial plugs and sockets!
