Electrical failures – short-circuit and wire-disconnection – are mostly caused by defective wire terminations as a result of operator skills.

Push-in CAGE CLAMP is a universal connection technology for all conductor types that provides the simplicity of push-in terminations, ensuring long-term contact quality independent of operator skills. It is designed for the harshest environments – steady vibrations and high temperature variations.


The vibration-proof properties of Push-in CAGE CLAMP connections have been tested and successfully validated in a vibration test to IEC/EN 60068-2-6. In this test, a frequency band up to 2000Hz, at different accelerations up to 20g and different amplitudes up to 20mm, is passed continuously in three axes.

Additionally, international authorities have placed extremely demanding requirements on electrical installations in rolling stock (IEC/EN 61373), and multiple marine agencies (e.g., GL, LR and DNV) have declared that Push-in CAGE CLAMP meets their lofty approval standards.

Maintenance-free operation results from excellent long-term consistency of the electrical and mechanical properties of the clamping connection – or more precisely, the clamping unit.

For all conductor types

Push-in CAGE CLAMP spring pressure terminals are suitable for all conductor types: solid, stranded and fine-stranded conductors, as well as fine-stranded conductors with ferrules or pin terminals and tip-bonded conductors. Moreover, all conductors can be connected without any preparation: ferrules and pin terminals can be used, but are not mandatory.

High contact quality

In addition to correctly selecting the materials and surface coating, the contact pressure determines the quality of the clamping connection. The conductor is pressed against the current bar in a predefined contact area without damage.

The contact zone is deliberately designed to be small and curved, not flat, in order to exert high contact pressure. The clamping force adjusts automatically to the conductor size. The clamp dynamically compensates for conductor deformation due to flow effects.

A superior design eliminates the risk of a loose connection; contact breaks are excluded. The conductor is embedded in a soft tin layer. The transition point is resistant to corrosive infiltration.

The long-term consistency of the contact resistance is ensured – even in aggressive atmospheres.

Now with a lever

Pull the lever up, insert a conductor and push the lever back down. The simple connection technology that has made WAGO’s 221 Series Junction Box Connector a popular all-purpose solution is now DIN-rail ready as the newest variant to WAGO’s trusted TOPJOBS Rail-Mount Terminal Block family. 

This means that even in the control cabinet, conductors can now be easily connected by hand and removed without tools. The user benefits from simple and intuitive use, especially for in-the-field wiring. The terminal point is clearly marked by the open lever, which reduces the risk of forgetting terminal points when wiring or connecting conductors incorrectly.

In addition, both hands remain free for wiring because the clamping unit does not need to be kept open with an operating tool. This convenience facilitates connecting difficult-to-bend conductors with large cross sections.

For more information on Push-in CAGE CLAMP, visit

Lauren ‘LJ’ Butler is the Assistant Editor of Utility magazine and has been part of the team at Monkey Media since 2018.

After completing a Bachelor of Media, Communications and Professional Writing at the University of Wollongong in 2014, and prior to writing about the utility sector, LJ worked as a Journalist and Sub Editor across the horticulture, hardware, power equipment, construction and accommodation industries with publishers such as Glenvale Publications, Multimedia Publishing and Bean Media Group.

©2024 Utility Magazine. All rights reserved


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