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Elinker electric technician teaches you know the plug-type terminal blocks
Published：2013-03-12 09:33:17 Views：
Pluggable terminal blocks Overview:
Means the insulating base and one or more charged by a combination of solid devices. As each of the conductive connection point of two or more conductors, but also as a tool for individual to connect or not connect conductors. Terminal blocks can be assembled or single-piece design. Modular terminal blocks to adopt similar combination of building blocks stacked together, both ends coupled with side door and locking fastened with screws. As for single-piece terminal block, you do not have the previously mentioned combinations of screws, can be used alone.
Pluggable terminal block classification:
Pluggable terminal blocks sold in, number of Poles (p), common, 3P,, 6P, 24P, and so on. Of course, few manufacturers also produce 2P~24P or 2P~30P terminal block. Some even up to 36P or 40P. Modular terminal blocks if there is no p limit on the number. If electrical specifications to differentiate, the terminal block rated current 10A, 15A, 20A, 25A, 30A, 40A, 50A, 60A, 100A, 150A, 200A, 300A, 400A. If in accordance with applicable wire sizes, we can also find other terminals rated current value. Rated voltage is 150V, 300V, 600V, 601 or more.
Pluggable terminal block structure
Terminal block end terminal block (hereinafter outlets), composed of free-end terminal. Socket by its square plate fixed on the electric parts and plug with cable, plug/socket connection through connection nut. Terminal blocks by shell, insulator, contact of three basic modules. Shell – terminal blocks the shell is the shell of the plug and socket, connecting nut and tail attachment. Shell is such a protective housing insulation and contacts terminal block internal parts from being damage. Positioned above the keyway ensure Plug and socket location. Connecting nuts used to attach and detach the plug. Back accessory used to protect the wires and contacts from damage by the termination and for fixing cables. Shell also has a certain electromagnetic shielding effect. Shell adopts aluminum alloy (machine, cold extrusion, die casting). Steel shell is used for sealing and heat-resistant electric terminal block. Insulated – pin insulator, with Jack insulator. Interface components, such as sealing, sealing line. To persist the plug
PIN holes in the set position, and allow contact between the body and the contact between the body and the shell for electrical insulation. Sealing sealing wire through the insulator and interface make sealing measures, to improve the environmental resistance of the terminal block. To adapt to the high temperature, low temperature resistance, flame retardant to ensure stable and reliable part geometry. Insulators are mostly made from thermosetting plastic mould forming. Interface sealing using silicone rubber mold forming, sealing line style. Contact-contact-plug-pin holes are total, divided into welding, crimping type and wire wrapping, etc, used for circuit connection. Plug-pin hole is the key terminal block components, which directly affects the reliability of terminal blocks. Plug-pin hole they use elasticity of the good electrical conductivity copper alloy machining, surface silver gold-plated contact resistance of low resistance and anticorrosion purposes. Resistance structural characteristics are: environmental, bayonet (fast) connection, multiple keys (mistake-proof plug), contact with wire crimp connections (single delivery failure). Shell and electromagnetic interference shielding rings ensure 360 ° shielding.
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