Types of Terminal Blocks and their Clamping Options

I need to know how to join two wires together. Taking off the coverings and twisting them together, perhaps? The answer is yes. Either a wire connector or insulation tape can be used to cover the connection. But what if several wires need to be connected in close proximity to one another? Also, how do you plan on handling situations where multiple outgoing wires must stay connected to an incoming wire? If that happens, it's no longer an efficient or secure method. In this case, we employ terminal blocks. If you are looking for the most popular as well as reliable barrier terminal block manufacturer in India, Elmex Controls Pvt. Ltd. is the best pick for you.

Terminal Block:

Terminal blocks, also known as connection terminals or terminal connectors, are modular blocks with a frame that is insulated and are used to fasten two or more wires together. Specifically, it has a conducting strip as well as a clamping part. The diagram below depicts a simple terminal block typical of the type.

A terminal block's current-carrying element is housed within the block's insulating body. To top it all off, it acts as a foundation for the clamping mechanism. The block's mounting configuration on the body makes it simple to attach or detach the body to a printed circuit board or mounting rail. Modular and DIN rail-mounted, terminal blocks are the norm. That gives us the flexibility to add more terminals as needed. Terminal blocks make it possible to make safe connections while also keeping wires neat and tidy.

Terminal Block Types:

Structure, termination options, device type, as well as other criteria can be used to categorise various types of electrical terminal blocks.

Structure Type: ● Single-level terminal blocks:

As the name implies, they are used to make a connection between two wires. Terminal blocks with only one input and one output contact are called single-level terminal blocks and are the simplest variety. Elmex Controls Pvt. Ltd. is one of the excellent barrier terminal block manufacturers in India, that can fulfil all of your terminal block requirements.

• Dual-level terminal blocks:

These cubes feature an additional tier of terminal connections. Space efficiency motivates this common configuration.

• Three-level terminal blocks:

These are similar to two-story buildings in that they feature an additional story on top. With multilayer blocks, it's possible to make several connections within a single block, which is very convenient.

Device Type: ● Ground Terminal Blocks:

These blocks frequently resemble feed-through terminals with a single level. The exception is that these blocks are somehow grounded to the DIN rail or panel on which they are placed, as well as the metal connection where the wire is terminated.

• Fused Connection Terminals:

A fuse takes the role of the metal connecting strip often seen in pass-through blocks. As a result, a fuse will be used to connect the wires for extra safety.

• Thermocouple Terminal Blocks:

These are made to accommodate connections for thermocouple leads. Some thermocouple connectors effectively clamp the thermocouple leads to the block on each side, doing away with the need for the strip of metal connection on the inner side of the block. However, the strip of metal connection built from the same metal as the wire may be present in some thermocouple blocks.

• I/O And Sensor Blocks:

Connecting a device to a controller requires the use of I/O blocks. where sensor blocks manage three- or four-wire sensors like proximity detectors.

• Disconnect Terminal Blocks:

To disconnect the wiring, simply lift the lever or flip the knife switch on the block. They allow for speedy wire connection and disengagement without having to completely remove them. The term "switch blocks" is another name for these components.

• Power Distribution Blocks:

Those are the blocks that distribute electricity, or power. Distributing electricity from a central source to various outlets with the help of a terminal block is not only more practical but also cheaper and safer. To the block of the input terminal, a single big wire is connected, and several terminals are available for use. Having the wiring in a control panel organised in this fashion is a must for any serious-looking setup.

Clamping Options In Terminal Blocks: ● Screw terminal:

The most typical type of termination is a screw clamp. Simply tightening the screw presses the wire or conductor against the block’s conductor strip. There is a variety of conductor as well as wire sizes that can be used with screw terminals.

• Spring clamp:

These connectors clamp the wire shut using spring pressure. Newer than screw clamps, spring clamps are typically used for smaller cables.

• Push-in terminal blocks:

Wires can be easily connected using push-in terminals. A ferrule is needed for most push-in terminals. The end of a wire or conductor can be reinforced with a ferrule. Some push-in terminal blocks, on the other hand, let you insert a stranded conductor via a screwdriver-operated release hole or a solid conductor via the hole.

• Insulation Displacement Connector (IDC):

To make contact with these connectors, it is not necessary to first remove the insulation. Simply inserting the wire without first stripping the insulation allows the terminal's two sharp metal blades to slice through the insulation and make contact with the wire's underlying conductor.

• Barrier terminal block:

Wherever there is a problem with vibration, these are used. Each wire has a ring or spade terminal attached to it, which is then placed into a bolt on the terminal block and secured with a nut. That way, the wire won't come undone from vibrations. Are you looking to place an order for barrier terminal blocks, connect with Elmex Controls Pvt. Ltd., the most trusted barrier terminal block manufacturer in India and fulfil your terminal block needs.

Elmex, a well-known electrical wire termination technology company in India and a notable manufacturer of terminal blocks, was formed in 1963. Elmex's production plant is ISO 9001:2015 certified.