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Discover Connectwell Multiple Level Terminal Blocks, which not only save you panel space but also simplify your wiring.
May 2022

- by Nandkishore Bhise,
  (Product Manager - Terminal Blocks)


Modern industrial applications call for both an increase in the density of wiring as well as a reduction in space, time and complexity of wiring. Multiple Level Terminal Blocks offer an ideal solution for this dual-faceted problem.

The design philosophy

Multiple Level Terminal Blocks are designed such that the entire volume of the control panel is better utilized rather than just the width and the height. This is accomplished using the following methods:

- Reducing the pitch of the terminal block to optimize the space it occupies on the DIN Rail.

- Increasing the height of the terminal block and creating separate potential points and levels within the same terminal block.

- Incorporating multiple functions into the same terminal blocks such as combining a fuse function at one level and a feed-through function at the other. Or, combining grounding and feed-through functions in the same terminal block at different levels.


And while wiring density is increased, Connectwell also ensures that the product design…

- Meets electrical safety standards in terms of clearances to manage creepage

- Ensures superior performance, in terms of current and voltage ratings, as required for typical electrical circuits

- Maintains ease of wiring with the help of standard tools


Types of Multiple Level Terminal Blocks

Multiple Level Terminal Blocks are categorized mainly based on the following four criteria:

- Number of levels
- Functions they incorporate
- Connection technology
- Wire sizes they can handle

Based on the number of levels and functions, these terminal blocks are generally available in the following configurations:

Double Level Terminal Blocks
This type of Multiple Level Terminal Block doubles the wiring capability in the same space as a standard terminal block. This type of terminal block is available in the following functional configurations:

- Two Feed-through Levels
- One Feed-through Level + One Grounding Level
- One Feed-through + One Fuse Level
- One Feed-through + One Disconnect Level


Application Examples: It is an ideal choice for automation panels where multiple wires are needed to connect and control different circuits.


Triple Level Terminal Blocks
This Multiple Level Terminal Block variant can be used for tripling the regular wiring density as it offers three connection levels in a standard terminal block space. This type of terminal block is available in the following functional configurations:

- Three Feed-through Levels
- Two Feed-through Level + One Grounding Level
- Two Feed-through + One Fuse Level
- Two Feed-through + One Disconnect Level


Application Examples: Triple Level Terminal Blocks are a good solution for sensor wiring, where wires from three wire sensors can be terminated within a single terminal block. Creating a sensor circuit using Triple Level Terminal Blocks and jumpers is very easy. It not only avoids wire looping and extended wiring time but also enhances the aesthetics and wire management of the panel.


Four Level Terminal Blocks
This kind of Multiple Level Terminal Block with ground can be used for higher wiring density. This type of terminal block is available in the following functional configurations:

- Three Feed-through Levels + One Grounding Level
- Two Feed-through + One Fuse Level+ One Grounding
- Two Feed-through + One Disconnect Level+One Grounding

4 Level Tb

Application Examples: These terminal blocks are a good solution for three wire sensor wiring, which requires the grounding of cable screening. It can also be used for 3-phase 4 wire system motor or load connection.


Eight Level Terminal Blocks
This Multiple Level Terminal Block variant can be used for achieving the highest wiring density inside the panel. It can manage 888 signals per meter, with redundancy, as it offers two connection points on each level in a standard terminal block space.

Cp 8l 32

Application Examples: Eight Level Terminal Blocks are ideal solutions for retrofitting panels with additional signals or accommodating new systems in existing places. The internally shorted version of this terminal makes 32 equipotential points an ideal solution for power distribution in a width of just 9mm. The internally shorted version, with two different levels, can also be used to distribute positive as well as negative potential in 16 different connections.

Connection technologies available in Multiple Level Terminal Blocks

Connectwell offers multi-level connections in 3 connection technologies:

Screw clamp: The most popular method of wire termination is obviously the screw clamp type connection. In comparison with all other terminations, it offers distinct advantages as listed below:

Screw drawing

- Wires can be connected without any special preparations

- Vibration-proof termination is guaranteed
- Wire can be connected and disconnected simply by using an ordinary screwdriver
- High tightening torque because of cold-forged, rolled threaded screws


Spring clamp: Screwless spring clamp connection is as versatile as a screw clamp connection. The electrical and mechanical quality of the wire connection is maintained by a high quality, rust-proof spring clamp. Here are the advantages that this technology offers:

Spring drawing

- Easy to operate, versatile and vibration-proof

- Minimal contact resistance
- Fail-proof / safe, maintenance-free connection
- The surface-treated, copper current bar ensures oxidation-free contact


Push-In: The new CP Series from Connectwell combines toolless wiring ease and speed with corrosion-free and gas-resistant connections that can withstand harsh environments and extreme vibrations.

Pushin drawing

- 400% faster connections with tool-free wiring method
- 3.5 mm thin terminal blocks
- Materials that can withstand the harshest environments
- Reduced inventory because of standardized accessories

Wire sizes typically available in Multiple Level Terminal Blocks

Multiple Level Terminal Blocks are required for wire sizes from 0.25 sq mm to 4 sq mm. Since these will predominantly be used in control applications, the wire sizes will hardly exceed 4 sq mm. For wire size more than 4 sq mm, terminating on double level terminal blocks is not recommended, as it poses the risk of cable insulation cracking due to sharp bends required for higher diameter wires


Connectwell, your right connection partner

With more than 15 international product certifications backed by the most stringent quality standards, our products pass through more than 40 quality assurance tests. This has ensured a ready acceptance of Connectwell terminal blocks across 80+ countries and in thousands of projects and applications worldwide.

Through our 4 decades of experience with state-of-the-art operations which are ISO certified, Connectwell has grown to become one of the leading manufacturers of terminal blocks in the world.

More than 1 million connections are made every day across the globe with Connectwell terminal blocks, making Connectwell a synonym for… the right connection.

So, if you would like to build your projects with a solution that can accommodate both dense and simple wiring, while saving panel space, ensure that you select Connectwell Multiple Level Terminal Blocks and get the added flexibility you need.



To know more about how Connectwell can contribute to your applications, please reach out to us at or +912517120600 / +912516762600


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