A junction box is made of metal (aluminum, 304/316L stainless steel ), plastic derivatives, or composite materials. It is used as an accessory in electrical cable protection systems by providing mechanical protection and the possibility of inspection when needed. These boxes can be made from various materials, including metal and plastic, and are crucial in both residential and commercial electrical systems. A junction box in the instrumentation field is a device that would act as an interconnecting medium between the process field instruments and the equipment which is used to control and monitor the field instruments, this equipment would be located in the control room. In this article, you will learn everything about junction boxes, including their definition, junction box working principle, types, components, applications, advantages and disadvantages, selection guide, and common problems.
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