The WAGO 221 Series Wire Connectors are designed to provide a tool-less and straightforward connection solution for all types of electrical cables. The connectors come in three variants: 221-412, 221-413, and 221-415, each capable of handling different wire sizes ranging from 24 AWG to 10 AWG.
Nowadays, most wiring terminals are composed of metal parts and insulated shells. When users purchase terminal products, they often pay more attention to the conductivity of the terminals, and they are not very familiar with the role of insulated shells. The following article will introduce the role of insulated shells in wiring terminals.
For users who are not familiar with the industry, it may be difficult to distinguish between "terminal" and "connector", as follows: