Disconnect terminal blocks and test disconnect terminal blocks

Disconnect terminal blocks, test disconnect terminal blocks and N-disconnect terminal blocks for testing and measuring circuits during maintenance work or normative requirements

Disconnect terminal blocks and test disconnect terminal blocks

Terminal blocks with disconnect function for measurements in control cabinets

Tests and measurements of separate circuits within electrical switchgear and electrical installations are subject to standardized requirements under DIN or DIN VDE. Test disconnect terminal blocks and neutral disconnect terminal blocks (N-disconnect terminals) are used to safely disconnect a circuit on a terminal without disconnecting the connected conductor for this purpose.

Various designs and versions (color, type of connection, cross-section) of the terminals enable the circuit to be separated or contacted to the 10x3 electrical busbar or N busbar, for example, for an insulation resistance measurement, which is required by VDE in public facilities. The disconnect lever, slider, or N-slider can be opened or closed easily and safely with a screwdriver.

Product range

Our product range of test-disconnect terminal blocks

PUSH IN technology

Thanks to the extensive range of accessories and the various cross-connection options, you can solve any requirement perfectly with our test-disconnect terminal blocks and N-disconnect terminal blocks (blue) in PUSH IN connection technology.

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Tension clamp connection

The test-disconnect terminal blocks or neutral disconnect terminal blocks with proven tension clamp technology are suitable for particularly compact but nevertheless clearly arranged control cabinet building. Its incredibly high degree of flexibility makes the tension clamp an excellent connection alternative for the electrical connection of flexible and solid wires.

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Screw connection

The high reliability and wide range of test-disconnect terminal blocks and neutral wire disconnect terminal blocks with clamping yoke connection technology provide relief in planning and maximum safety in operation with and without wire end ferrules.

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New products for disconnect terminal blocks and neutral disconnect terminal blocks

PUSH IN - disconnect terminals with 3.5 mm width

Our ADT 1.5 disconnect terminal blocks offer the option of disconnecting signals up to 10 A with a minimum width of just 3.5 mm. Integrated and standardized testing points in front of and behind the disconnection area enable simple and safe testing and inspection in the field, even when wired.

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Test disconnect and fuse terminal blocks A2T 4 FS and A2T 4 DT

The number of sensors and actuators in the field is growing. More and more potentials have to be wired, fused, or even separated in the control cabinet. One example is servomotors with the potentials plus, minus, or PE. They require clear wiring, including fused potential.

The new two-tier terminals of the A2T 4 FS and A2T 4 DT series combine up to three functions per terminal. For example, you can choose from "Disconnect, feed-through, PE" or "Fuse, feed-through, PE." Sensors and actuators can be wired conveniently and clearly on just one terminal block. The potentials can be fused or disconnected. Cross-connection channels on each level ensure safe potential distribution on the terminal strip.

Test disconnect and fuse terminal blocks A2T 4 FS and A2T 4 DT
  • Three potentials on only one terminal - PE, feed-through and fuse or PE, feed-through and disconnect
  • Test voltage tap / test possibility on each level
  • Multifunctional separation area for individual applications
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Separate potentials simply and safely in confined spaces

In marshaling cabinets in industrial control systems, signal lines from the field are often connected with terminal blocks. These are known as a robust, simple, and tidy connection option. However, using them requires sufficient current protection and a reliable disconnection circuit.

Our A2T 2.5 DT/DT test-disconnect terminal blocks enable safe and simple electrical isolation in confined spaces. Two potentials can be operated with only one terminal block, resulting in space savings of 50%. The multifunctional disconnect section can be converted into a fuse terminal or equipped with a component plug to enable the integration of electronic components.

Separate potentials simply and safely in confined spaces
  • Separation of two different potentials on one terminal block
  • Test voltage tap / test possibility on each level
  • Multifunctional separation area for individual applications
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Download for our disconnect terminal blocks

On the website Engineering Data you will find an extensive selection of downloads related to CAT data. A wide range of digital product data is available for engineering systems such as EPLAN (EPLAN Electric P8 and EPLAN Pro Panel), Zuken E3.series, WSCAD, and many others to help you quickly integrate our products into your design. This data allows for precise representation of disconnect terminal blocks, test disconnect terminal blocks or also N-wire disconnect terminal blocks (blue) in 3D and show all relevant electrotechnical and business characteristics.

Consulting & Support

Customer Service - USA

Technical Support - USA

Weidmuller, USA 821 Southlake Blvd. Richmond, VA 23236 804.794.2877 804.794.0252