Terminals and quick connectors

When choosing terminals and quick connectors, determine which conductors will be joined, how many points are needed and where the connection will be located. A terminal strip, terminal block and lever connector require different comparisons, even when their dimensions look similar.

The mechanism matters to selection

WAGO 221 includes lever connectors for solid, stranded and flexible fine-stranded conductors. However, check permissible material, cross-section, current and voltage by exact product number. The series contains different constructions, so the 221 name alone does not determine a specific item's geometry or number of positions.

WAGO 2273 is a different PUSH WIRE series for solid conductors. Do not transfer the suitability for flexible conductors from lever products to it. For a more focused comparison, browse WAGO and select references by the same conductor type and task instead of solely by housing appearance.

Positions, mounting and space

Count the connection points required and check what the number of positions means for the selected product. For a terminal block, consider the mounting method and supplementary parts required. For a connection in a box, compare dimensions and access around it. A photograph is not enough to check space; use the specific reference's dimensions and drawing.

Prepare the conductor data before comparing commercial offers. Its cross-section and construction must comply with those permitted for the terminal. Colour and shape may help you find an item, but do not prove its electrical function or interchangeability. For a kit, check the contents; for a single product, check the package quantity.

Distinguish connection from cable termination

When preparing an end for connection, look for cable ferrules, lugs and connectors. If the task involves a housing or insulation of the joint, compare cable joints and couplers. Do not assume that a separate protective housing is suitable for every terminal that physically fits inside it.

For an overview of components, use Cables and connections. Before ordering, record the exact product number, permissible conductors, dimensions, mounting and required accessories. This is a more reliable basis for selection than comparison solely by external resemblance or the general name “quick connector”.