Terminal block meaning, classification, characteristics

1. Definition of terminal blocks:

Terminal blocks are an accessory product used to realize electrical connections, which are divided into connectors in the industry. With the increasing degree of industrial automation and the more stringent and precise industrial control requirements, the amount of terminal blocks has gradually increased. With the development of the electronics industry, the use of terminal blocks is increasing in scope and variety. At present, in addition to PCB board terminals, there are hardware terminals, nut terminals, spring terminals and so on.

2. Classification of terminal blocks:

Terminal blocks can be divided into WUK terminal blocks, European terminal blocks series, plug-in terminal blocks series, transformer terminal blocks, building wiring blocks, fence terminal blocks series, spring-type terminal blocks series, rail-type terminal blocks Series, through-wall terminal block series, photoelectric coupling terminal series, 110 terminals, 205 terminals, 250 terminals, 187 terminals, OD2.2 ring terminals, 2.5 ring terminals, 3.2 ring terminals, 4.2 ring terminals, 2 ring terminals, 6.4 ring terminals, 8.4 ring terminals, 11 ring terminals, 13 ring terminals Flag series terminals and sheath series, various ring terminals, tubular terminals, terminal blocks, copper strips and iron strips (2-03, 4-03, 4-04, 6-03, 6-04), etc.

3. Features of terminal blocks:

Using the existing rail-type terminal WUK connection technology and adding a circuit composed of electronic components, the transmission coupling of the photoelectric process is realized. The core of automatic control is that the Control Unit must be reliably isolated from each sensor and actuator to avoid interference. Sanmenwan WUKG2 optical barrier can perform this function well and ensure that the field signal matches the low voltage required by the electronic control device. It can also be used as an interface element between the peripheral equipment of process control and the control, signal and regulator devices, and is suitable for different voltage and power ranges. Optical partition terminals have the advantages of signal loss at the control terminal, high switching frequency, no mechanical touchpoint jitter, no wear switching, high insulation voltage, no fear of vibration, no position influence and long life, so they are widely used in the field of automatic control.