How to use the terminals WAGO?

  • Dec 24, 2019

Modern property, regardless of its purpose (residential or public building) is always equipped with advanced electrical system. In the process of forming its linear part has to perform both splice individual segments of cables and connection endpoints.

Along with the traditional means of this procedure (twisting, welding, soldering, bolting, and a few others) in recent years have increasingly used the WAGO terminals. The focus area of ​​their application - the part of the electrical power wiring, which serves a variety of equipment low and medium power part.

WAGO terminal block was designed to determine the application, and when used, be sure to observe a number of rules and restrictions. Only in this case, guaranteed by the implementation of the stated parameters of the manufacturer, long life service and the safety of both the component and wiring in general.

Criteria for selection of WAGO terminal blocks for field operation

For your convenience, the manufacturer divides the entire range of products in the series, which are focused on specific fields of application. As the main distinguishing feature of traditional products for switching the maximum current is involved.

As other classifying parameters are used:

  • the number of mounting slots;
  • product type in the number of switching cycles: disposable and reusable;
  • the absence and the presence of a paste, which is filled with mounting slots.

Terminals with two jacks are focused on merging the two cable segments. Products with two or more pairs of slots carry a connecting bus functions in the organization of the branch.

Disposable terminals (an example is shown in Figure 1) is visually different from their reusable counterparts lack locking lever (see. Figure 2). Apply in cases where the probability of rupture organized wiring connections is low. With careful handling possible reconnection, but the reliability is not guaranteed.

Picture 1. Disposable terminals WAGO
Picture 1. Disposable terminals WAGO
Figure 2. Reusable terminals WAGO (clearly visible locking levers in the position contact is closed)
Figure 2. Reusable terminals WAGO (clearly visible locking levers in the position contact is closed)

Connectors with a sealing paste, which blocks the oxidation wires installed, it is advisable to apply in two main cases:

  • humidity;
  • the need to connect aluminum conductors.

The process of selecting a particular type of product is facilitated by the use of different colors for making plastic housing.

Recommendations for the preparation of wires

The wire connected to the terminal board, should be appropriately processed.

This means that before connecting it is necessary to:

  • clean, the stripping length should be slightly smaller than the socket depth to its uninsulated portion does not protrude from the housing component (for example removable insulation measuring length is shown in figure 3);
  • flattened to maximize the contact area with the contact (guarantee small transitional resistance);
  • degreased to obtain a stable resistance during the transition time.
Figure 3. Determination of the length portion removability isolation
Figure 3. Determination of the length portion removability isolation

Work with flexible multiwire current-carrying veins

The most common practice WAGO terminals in most cases, are designed to connect to them hard or solid conductors. In the transition to a flexible stranded conductors are growing risks of falling quality.

To eliminate them rigidity of the end portion to be artificially increased:

  • welds;
  • installing crimp ferrule (the type shown in Figure 4, or similar to them.
Figure 4. ferrules
Figure 4. ferrules


WAGO terminal blocks allow simple means to create high-quality contact between two or more wires power wiring. The required parameters for reliability of the connection is guaranteed by the selection of the magnitude of the current component and the field of operation, as well as the subsequent mounting of simple compliance rules.