A DIN Rail is a metal rail of with standard size of 35 mm wide. (A)

It's commonly used on installation and assembly of electrical devices or controllers for home or business use.
Besides the typical DIN rail 35 mm x 7.5 mm, can also be found in other measures as:

- Mini DIN Rail, size 15 mm x 5.5 mm (B)
- DIN Rail, size 35 mm x 15 mm (C)
- G section, size 32 mm x 15 mm x 8mm (D)

These rails are designed for installations with a method of simple, fast and configurable fixing. Ideal for installation in electrical distribution points, distribution of telephone wiring, alarms, digital electric programmers, keystone adapter, attenuators and any other compatible device.

SPN correspond to the English term Single Phase Node. Equivalent to the Spanish term phase. The phase term in domestic premises or homes means you have a single phase alternating current. Usually contracted power in homes is up to 10kW. The difference with the phase installations is that these can be divided into three phases, namely three alternating currents. The instalaciones-phase may also be divided into parts. Facilities include single-phase 3-wire cable 1. phase (black or brown cable) that is providing electricity. 2. Neutral (blue wire) is responsible for the electricity back where it came from creating a circle. 3. Physical cable (two colors) protects the energy absorbing phase of their environment, in some cases this third cable is not used, but isrecommended it for security. 1. In the image-phase power system three-phase power system 2.

The DIN is a standard that was developed by the "Deutsches Institut für Normung" (one might call the national standards organization in Germany). The DIN is facing many sectors, but we have tried to focus on the DIN-oriented electronics and computing. In the case of Enclosures means qualifying under the German legislation on racks and is standardized to DIN 41494-7.