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Practical tips
Practical Tips for Our Rail-Mount Terminal Block Systems

We’ve compiled helpful information for the correct handling of WAGO rail-mount terminal blocks. Here you’ll find answers to frequently asked questions on topics such as connecting/wiring terminals blocks, marking, commoning and official requirements.

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Practical Tips for TOPJOB®S Multilevel Installation Terminal Blocks

How does wiring with multilevel installation terminal blocks work in control cabinets? What needs to be taken into account for installation and commissioning?

Practical Tips for TOPJOB®S Rail-Mount Terminal Blocks

How does PV system connection work? How do rail-mount terminal blocks work in distribution boxes? How do distribution cabinets work with TOPJOB®S Rail-Mount Terminal Blocks?

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Expert Interview on Rail-Mount Terminal Blocks in Building Distribution Cabinets

Safe and economical conductor connection is what electrical interconnection technology is all about. Although it sounds incredibly simple, it actually places extremely high demands on the components used. In this interview, WAGO Product Manager Andreas Brettschneider explains what really matters when it comes to engineering rail-mount terminal blocks for use in building distribution cabinets.

Mr. Brettschneider, what are the main demands placed on interconnection technology for switchgear in today’s buildings?

Well, the biggest demands are cost-efficiency and safety. The first requirement is met by fast installation. This is why push-in termination is preferred for connecting the solid conductors that are primarily used in buildings. We provide that with our Push-in CAGE CLAMP® Connection Technology within the TOPJOB® S Rail-Mount Terminal Block family.

And what about safety?

WAGO’s rail-mount terminal blocks feature high safety reserves. For example, this means that our rail-mount terminal blocks can be wired one size over their rated cross-section. They can also be loaded with the rated current of the next largest cross-section. Some concrete numbers: A 2.5 mm2 (14 AWG) conductor can be accommodated in a terminal block with a nominal cross-section of 1.5 mm2 (16 AWG). This results in additional cabinet space savings.

But what about problems related to heating effects?

These effects pose no problem at all. In fact, heating effects must be accounted for when planning and designing switchgear and control cabinets. And this has been required by the IEC 61439 standard for low-voltage switchgear and control gear assemblies since late 2014. Therefore, the relevant question is actually what the electrical reserves of components are. Due to their large electrical reserves, our TOPJOB® S Rail-Mount Terminal Blocks have a minimal impact on heating effects for switchgear and control cabinets.

Does this mean that the TOPJOB® S Rail-Mount Terminal Blocks range offers different advantages for cabinet design and installation?

Exactly. Both cabinet planners and manufacturers benefit from large electrical reserves and a compact terminal block design. This allows a higher number of terminal blocks to be accommodated in distribution cabinets, while satisfying demands for more building wiring. Furthermore, on-site electricians also benefit from our Push-in CAGE CLAMP® technology that allows quick, reliable termination of solid conductors in building circuits during distribution cabinet wiring.

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Perfect Electrical Interconnection Technology

Practical tips for installers: Fast, reliable, maintenance-free solutions simplify your everyday tasks.

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