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What Is An SY Cable?

An SY cable is a type of Flexible Armoured cable, it is used mainly in industrial environments, but also more and more in domestic installations for garden lighting and other applications to make connections easier. The galvanised steel braiding that protects the inner cores can also help keep Signals on phone/data lines from being interfered with . While there are other types of cables out there, this specification has become widely used when creating/connecting power leads including armoured extension leads.

And what does SY stand for in cable?

  • S refers to steel wire braid
  • Y stands for polymer PVC
16mm x 3 core sy cable

sy cable 16mm 3 core

An SY control cable is a flexible instrumentation electrical cable designed for measuring, control, or regulation in the field of process automation. It is a flexible multicore cable with copper conductors and a galvanized steel wire braid for mechanical protection.


In this article, we’ll cover different measurements of SY cable, including 1mm, 1.5mm, and 2.5mm. Additionally, we’ll look at how they’re typically used and some other relevant information.

Types of SY Cable

The strength of an SY cable lies in its simplicity to use. There are several different types of cords under the specification, each designed for different purposes. For example, there is a control cable with standard insulation that can be used for measuring or controlling signals in the field of automation applications.


A conductor is twisted around every strand in both cables to provide protection against electrical interference. The cord has another layer around this protective layer to provide further insulation from outside sources. It has three layers total, which includes two conductors that are wrapped together next to a steel braid. The conductors have been covered with thermoplastic material rather than PVC outer sheath encasing the four twisted pairs.


SY Control Cable is manufactured with thermoplastic insulation (TPR) over stranded tinned copper conductors and a galvanized steel wire braid for mechanical protection.

1mm SY cable

1.0mm SY Cable is a flexible control cable with galvanized braided protection, so it’s safe and ideal for use in factories, worksites, and other industrial applications. This cable may also be used in dry, damp, or wet environments.


The 1.0mm x 12 Core SY cable is typically utilized as an interconnecting cable in measuring, controlling, and regulating control equipment for assembly and production lines, conveyor systems, and computer devices. Industries such as:


  • Construction and building sites
  • Road transportation
  • Transmission & automation control, among others, frequently use it.

1.5mm SY cable

A 3 Core SY Cable with a core CSA (cross sectional area of 1.5mm) for example 1.5mm SY Cable, a robust control line cable capable of delivering power to a wide range control or single phase installations. The wire has been armoured in galvanized steel wire, giving it protection against some degree of heat and strain. This makes it ideal for use on construction sites and in manufacturing  environments.

2.5mm SY cable

2.5 mm SY cable comprises a transparent outer sheath, and a galvanized steel wire braided protection beneath, which provides extra protection against mechanical and thermal strains. The cable is anti-chemical, safe to use in both dry, damp, and wet rooms/environments


An Example of the Technical Specifications of 2.5mm 12 Core SY Cable:

  • Voltage Rating: 300/500V
  • Temperature Rating:
    • Fixed: -40°C to +80°C
    • Flexed: -5°C to +70°C
  • Minimum Bending Radius:
    • Fixed: 4 x Overall Diameter
    • Flexed: 12.5 x Overall Diameter


SY control cables are designed to meet the specific needs of process automation. These flexible multicore cables come in various sizes and lengths, with copper conductors for flexible power requirements that is reliable even in hazardous environments.