A spade or ring terminal is attached to the wire and then inserted into a bolt and tightened with a nut on the terminal block. Barrier Terminal Blockīarrier terminal block is used in power system. Thus, it reduces the time-consuming process of stripping the conductor insulation. T he two sharp metal blades inside the terminal cut through and make a connection. There is no need for stripping of the conductor insulation. IDC is an electrical connector that connects conductors of insulated cable. Terminal blocks with Push-in connection are part of the COMPLETE line system Insulation Displacement Connector ( IDC ).The conductor can be easily released without special tools.Safe wiring and operation with color-coded push button.Convenient insertion with 50% lower insertion force.Time-saving connection of pre-treated and rigid conductors with tool-free direct connection technology.The special contact spring allows easy insertion and guarantees a high level of contact quality. With Push-in connection technology, you can connect conductors from 0.25 mm² easily – both directly and without tools just by inserting the screwdriver into the release hole. It is generally used for lower rating applications, however, for power applications, the spring clamp terminal blocks are available in the market. The spring pressure is used to retain the wire properly clamped. Screw terminals accommodate a very wide range of wire or conductor sizes.
This type of clamping option is widely used. The screw on the terminal block is used to tighten the wire or conductor inside the terminal block. Clamping Options In Terminal Blocks Screw terminals Thus, the power distribution blocks provide safe and well-arranged wiring. One large rating wire is connected at the input terminal and multiple output terminals are provided at the output. They are widely used in enclosed equipment such as electrical panels, machinery, and HVAC systems. Power distribution blocks distribute a primary power input into several secondary outputs. The disconnection can be easily established just by lifting a lever or knife switch. The disconnecting terminal blocks are used for those applications where there is a need for disconnection. Types of Terminal Block- Disconnect Terminal Blocks The sensor blocks handle three or four-wire devices such as proximity sensors. I/O terminal blocks make a connection between a device and a controller. These special current-carrying elements ensure that there is no loss of potential at the connecting points. As per DIN 43713 & DIN 43714, the current-carrying element of the Terminal Block is made of the same material as the thermocouple wire. We use Thermocouple Terminal Blocks with thermocouple wires for temperature measurement applications. These Terminal Blocks are used in electrical and control systems which require fuse protection. Grounding terminal blocks are in green and yellow per international standards. In this way, the DIN rail functions as a ground bus bar. Grounding terminal blocks mechanically and electrically connect wires to the DIN rail through a conducting clamping foot. Types of Terminal Block- Device Type Ground Terminal Blocks The multilevel terminal block saves space. When one more terminal lock is added to the dual-level terminal block, it becomes the three-level terminal block. On a single-level pass-through terminal block, one set of terminals is stacked on the first one. The block is also called a single feed terminal block. Termination options Structure Type block Terminal Single level pass-through terminal blocks.
Types Of Terminal BlocksĮlectrical terminal blocks can be classified on the basis of The terminal block provides safe & well-organized wiring. Thus, it is possible to mount more blocks as per the requirement. Most of the terminal blocks are modular and can be mounted on DIN rail. The terminal block can be mounted on PCB (Printed Circuit Board) & it is also possible to unmount the block from PCB. Thus, there is no chance of the looseness of connections.
After stripping the insulation, the wire is inserted into the terminals and tightened with the help of a screw. It also provides a base for the clamping elements. Image Credit – Wikimedia CommonsĪ conducting strip is housed inside the insulating block. The image of the terminal block is shown below. It has a clamping component & a conducting strip.
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