Portable industrial sockets

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Portable industrial sockets

Portable industrial sockets are used to create industrial extension cords. Their housings are demountable so that it is possible to accurately make all the necessary electrical connections inside. They are often equipped with a flap and a rubber gland ensuring the sealing of the cable-socket contact.

Portable industrial sockets

Portable industrial sockets must first of all ensure a safe electrical connection, and be characterized by a tightness class appropriate for the application, as well as shock and crush resistance, as well as vibration resistance.

Most of the commercially available sockets are housed in a high-quality plastic housing, however, aluminum sockets can also be found on the market. However, they are rarely used to make new extension cords - rather they are used to repair old ones, which for some reason are still used in a given case.

The most important parameters of portable industrial sockets

Portable industrial sockets are characterized by a reinforced housing structure made of plastic, which enables their long-term use in difficult environmental conditions as workshop, industrial and construction sockets.

They are characterized by a tightness of at least IP 44, and often also higher, even IP 67, which guarantees proper operation also during short-term flooding. The most common portable sockets used in the industry are the equipment for the 16 and 32 A rated current, less often customers are interested in 63 A sockets, and 125 A sockets are made to order only.

The most common types of industrial sockets

Industrial sockets used in industry are available in several assembly versions. They are produced, among others. as surface-mounted, intended for installation on partitions. They have an oblique design that prevents accidental tearing of the plug, which is less likely with oblique sockets than with straight sockets.

Another type of industrial equipment are flush-mounted sockets, mounted in boxes under the plaster, used wherever the installation is carried out as flush-mounted and the aesthetics of its performance is important.

Another type of sockets are panel sockets, which are used for installation in switchboards, cabinets and boards as well as on desktops, and finally portable sockets for industrial extension cords.

Portable sockets - structure and characteristics

Portable industrial sockets are used to make extension cords and industrial splitters. They do not have feet, like wall-mounted sockets, but are equipped with a clamp ring that secures the outer sheath of the power cord and protects it against being pulled out of the gland. Industrial portable sockets are available in the form of single equipment or a strip consisting of two, three or more single sockets. They can also be equipped with switches.

Portable sockets for powering three- and single-phase devices

Industrial portable socket can have a different number of contacts located inside the holes. The most common sockets in the industry include:

  • 5-pin, with three phase contacts usually marked L1, L2, L3, one neutral N contact and one protective PE. They are a standard in the circuits of three-phase devices supplied with 400 V voltage in TN-C-S or TT network systems,

  • 4-pin, with three phase contacts usually marked L1, L2, L3 and one protective-neutral PEN. They are used in older installations, where they are used to connect three-phase devices supplied with a voltage of 400 V in the TN-C network system,

  • 3-pin, with one L-phase contact, one neutral N and one protective PE. They are used to connect single-phase devices supplied with a voltage of 230 V,

  • 2-hole, equipped with two contacts. They are used to connect devices powered with a low voltage of 24V.