New standard for terminal blocks


The terminal block is used to facilitate the connection […]

The terminal block is used to facilitate the connection of the wire. It is actually a piece of metal that is sealed inside the insulating plastic. There are holes at both ends to insert the wire, and screws are used for fastening or loosening, such as two wires, sometimes Need to connect, and sometimes need to disconnect, then you can connect them with the terminal, and can be disconnected at any time without having to solder or entangle them, it is convenient and quick. Moreover, it is suitable for a large number of wire interconnections. In the power industry, there are special terminal blocks, terminal boxes, all of which are terminal blocks, single layer, double layer, current, voltage, ordinary, breakable and so on.

A certain crimp area is required to ensure reliable contact and to ensure sufficient current is passed. H-type through-wall terminal blocks are widely used in some applications where wall penetration solutions are required: power supplies, wave filters, electrical control cabinets and other electronic equipment. The insulation performance is good and the protection level is high. The user only needs to work directly after external wiring, which saves many unnecessary wiring steps. The modified nylon (PA66) for the insulation of WUK series terminals has good electrical and mechanical properties. The screws are made of high-strength copper alloy, the conductors are made of electrolytic copper, and the crimping frame is made of alloy copper which is resistant to stress cracking. These metal surfaces are also protected by tin or nickel plating. The all-copper terminal block avoids the battery effect of steel metal parts and copper wires in a humid environment.

There is a connecting hole in the middle of the terminal, and the central connection can also be connected by the side plug-in connector; it can be connected with an electrical connection product with a wire voltage of 4V and a wire current of 800V and a current of 41A. The new standard removes some of the structural and material performance requirements of the old standard. Such as vibration resistance, impact resistance, impact resistance, aging resistance of elastic parts, low temperature and (high temperature) performance, heat resistance, rust resistance, etc. The new standard's electromagnetic compatibility includes immunity (surge immunity, electrical fast transient/burst immunity, RF electromagnetic field immunity and electrostatic discharge immunity) and emissions (radiation and conduction). The old standard only has the requirements of anti-electromagnetic interference (anti-high-frequency conducted interference, anti-high-frequency radiation interference, anti-low-frequency conducted interference and anti-surge over-voltage conduction interference).