1. Plug-in connection method: The plug-in connection method is a multi-purpose connection form. Because this connection method does not have a mechanical labor-saving mechanism, if the operation is wrong, the mechanical resistance will be significantly increased, which can be found in time.

2. Cabinet connection method: This connection method is suitable for electrical connectors on some devices that are close to the frame and need to be connected blindly. It can make the electrical equipment very light and small, and it is easier to maintain. In this connection form, the operator cannot feel the connection situation, so an accurate positioning device is required to avoid forcibly and wrongly connecting the industrial electronic connectors together. The cabinet connection method usually adopts a floating or elastic contact design structure to ensure the correct connection.
3. Threaded connection method: It is often used in the connection between some large-sized contact parts or the original parts in the working environment with strong vibration. This connection form can install a fuse to prevent loosening after the connection is completed, which is more stable and reliable, but the continuous unloading speed is slow.
4. Bayonet connector: This connector is a reliable and rapid form of connection and separation. Most bayonet connectors have a visual display of proper connection and locking, which can be viewed directly from the small hole on the side of the connector's coupling nut for easier installation.