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WAGO High-Current Terminal Blocks

 24 July 2023

Easy connection of difficult-to-bend conductors

Both in building technology and in industrial applications, supplying electrical power poses challenges for installers and control cabinet manufacturers: Difficult-to-bend conductors with large cross-sections must be reliably and permanently connected to ensure power supply to the components in the control cabinet. This is made all the more difficult when the space for connecting the supply conductors in and around the control cabinet is cramped. But how can these conductors be connected easily even under difficult conditions? Sophisticated components from WAGO contribute to the solution and can do much more!

Three Tips to Facilitate Power Supply

Supply terminal blocks form the interface between external and internal wiring, or between field and factory wiring. From the user’s perspective, ease of use is often the most important criterion.

Therefore, in this helpful tip, we present three essential advantages that make your work with power supply significantly easier:

  • 1. Lateral conductor entry for convenient connection: No bending of conductors required to contact the conductor in the clamping unit.
  • 2. Open terminal blocks remain locked in place, freeing up both hands to use for wiring.
  • 3. Open multiple clamping points for simultaneous conductor connection of multi-core cables.

Helpful Tip Video

In our video and with the help of two practical examples, learn how you can significantly increase the flexibility and ease of energy feed-in in building technology or industrial applications.

Two Examples for Easy Power Supply

Example 1: 3-conductor lever-actuated terminal blocks for connecting two RDC circuit breakers in the distribution board

Use the 3-conductor lever-actuated terminal blocks to wire your ground fault circuit breakers safely and in accordance with standards. According to DIN VDE 0100-530:2018-06, it is not permissible for a single RCD to switch off all end circuits that are powered by a common distribution circuit. This means that the end circuits of a distribution board are to be divided into at least two RCDs so that not all end circuits are switched off simultaneously and total failures are prevented. WAGO's 3-conductor lever-actuated terminal blocks provide direct wiring to two RCDs via two connection points on the internal side. No additional phase rail is required between the RDC circuit breakers or potential multiplication via twin ferrules. And the benefits? Simple, time-saving installation, optimized space utilization and enhanced reliability by reducing the risk of failure. With nominal cross-sections from 2.5 mm² to 16 mm², our rail-mount terminal blocks with levers cover a wide range of possible applications.

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Top Benefits of WAGO TOPJOB® S Rail-Mount Terminal Blocks:

  • Depending on the application, three different types of actuation are available: lever, push-button and operating slot
  • Push-in termination of solid and fine-stranded conductors with ferrules for all versions
  • Proven spring pressure connection technology: fast, vibration-proof, maintenance-free • Lateral conductor entry: flexible and easy to use
  • Practical and neat: Continuous marking options
  • Time savings: No need to prepare conductors for termination, no ferrules or crimping required
  • Fast and reliable: Testing options in all versions
Learn more

Example 2: Fast power supply with difficult-to-bend, large conductor cross-sections for industrial applications

The supply of high currents requires the connection of large conductor cross sections. High-current terminal blocks with POWER CAGE CLAMP connection technology are the right choice for applications in large building complexes or industry. They provide optimal contact force for conductor cross-sections up to 35, 50, 95 and 185 mm2(2, 2/0, 4/0 AWG and 350 kcmil). This makes high-current terminal blocks the perfect solution for energy-intensive applications, e.g. mechanical and systems engineering, as well as power engineering. And all this using spring pressure connection technology, eliminating time-consuming preparation of large conductor cross-sections with crimping ferrules or cable lugs. What's more, the high-current terminal blocks have lateral conductor entry, and the clamping point can be locked in the open state. This is especially important for large conductor cross-sections that are difficult to bend, because locking in the open position frees up both hands for you to work with.

Nor do users need to worry about tightening torque when connecting conductors: The spring pressure presses the conductor onto the current bar via two clamping brackets, ensuring excellent conductor contact – regardless of the operator’s level of care.

Major Benefits of WAGO High-Current Rail-Mount Terminal Blocks:

  • Lateral conductor entry: Flexible and easy to use
  • Practical: The connection point remains open automatically thanks to the locking function
  • Time-saving connection: No time-consuming preparation of conductors with ring terminals or ferrules required
  • Safe and reliable: Vibration-proof and maintenance-free spring pressure connection technology ensures optimal contact force, regardless of operator care
  • Multifaceted: Suitable for all applications, even up to railway and marine applications
  • Easy identification: Marking using WMB markers or marking strips
Learn more

Step-by-Step Instructions

Insert the Allen wrench in the opening provided and turn counterclockwise to preload the spring.

Press in locking button to keep clamping unit open.