DIN and standard-compliant wiring with AITB installation terminal blocks

There are a large number of DIN standards and DIN VDE regulations in electrical house installation and electrical installation for apartments. Because of this, high safety standards and increased fire protection must be met for electrical installations and distribution panel construction. These standards also apply to a wide variety of components and electrical equipment that often have to be integrated into complex sub-distribution and distribution panels for low-voltage systems in very confined spaces.

Our new AITB installation terminal blocks have been specially developed to meet the special requirements and safety regulations for standard-compliant and modern electrical installations. Special features of the neutral disconnect terminal block provide real added value for planning, installation and operation on site. The existing portfolio of terminal blocks with screw connections is compatible with the AITB system and facilitates the measurement of insulation resistance as required by the standard - protective earth (PE) against neutral (N) and protective earth against all phases (L1, L2, L3).


Installation terminal blocks, 3 wire terminal blocks and N-disconnect terminal blocks in an L-BOXX 102

The L-BOXX 102 set INSTA 1 includes a wide range of 3-wire installation terminal blocks, as well as other terminal blocks and accessories for wiring main distribution boards and sub-distribution boards.

  • 3-wire installation terminals
  • 1-level installation terminals
  • End plates and end brackets
  • 10x3 busbar incl. cover
  • Cross connector and marker

The following figure shows an overview of the products of the L-BOXX 102 INSTA 1:

Standardized terminal rails for main distribution in buildings Product innovation

Simply more efficient

Because terminal rails often fulfill the same functions and carry similar components, we offer standardized terminal rails for building installations. They can be ordered via a uniform article number and are delivered ready for installation. Our terminal rails can be mounted in the distribution cabinet without further preparation, so that wiring can begin immediately. Plugging in supplementary accessories or labeling markers on site is not necessary.

Standardized terminal rails for main distribution in buildings
Your advantages
  • Ready-assembled terminal rails with or without mounting rail or compiled terminal block without mounting rail
  • No time-consuming assembly of terminals and accessories
  • Clearly legible labeling and markings
  • Cleanly and neatly mounted accessories

The three-level installation terminal blocks offer added value in all phases of panel building

The planning phase is crucial for the success and cost-effectiveness of the entire panel building process. It requires intelligent interplay between digital article data and interconnected engineering tools. Efficient, easy wiring is key when it comes to the installation.

Our products stand out in this respect with their intuitive handling and clear design. All terminal functions can be distinguished from each other instantly.

Our Klippon® Connect products feature standardized test points which make automated testing and checking processes possible. In this way, maintenance and testing tasks can be carried out much more safely and faster.

Easily meet increasing safety standards and norms according to DIN VDE

DIN VDE 0100-718 - VDE 0100-718 and DIN VDE 0100-482 VDE 0100-482 and VDE 0105-100 DIN VDE 0105-100

High safety requirements and fire protection in building services are designed to protect people and equipment in workplaces. There are numerous standards in this area, such as standard DIN VDE 0100-718 - VDE 0100-718 (Low-voltage electrical installations), standard DIN VDE 0100-482 - VDE 0100-482 (for operation of electrical installations of fire, fire hazard), DIN VDE 0105-100 - VDE 0105-100 (operation of electrical installations) and DIN VDE 0701-0702 - VDE 0701-0702 (repair and modification of electrical equipment), which include every component, no matter how small, in the overall system or refer to the safe operation of the installation within the work site.

These norms and standards also increase the safety requirements for all electrical systems and their components – for example, the terminal block system that acts as the interface between the electrical system and the building. The DIN VDE standards refer to fire protection or the avoidance of a potential fire hazard, the operation of electrical systems or the repair and modification of electrical equipment.

Insulation resistance measurement and testing / Insulation resistance measurement

DIN VDE 0100-600 "Low-voltage electrical installations" contains requirements the initial testing of electrical installations. During the test before commissioning, the electrician determines whether the standard requirements were met during the construction of the electrical system.

In the design and installation of distribution cabinets for low-voltage electrical installation systems in residential, office and industrial buildings, the standard requirements include the opening and closing of fused circuits for insulation resistance measurement. Depending on the number of circuit groups within an object, the disconnection can be handled via a standard disconnecting lever or a disconnecting slide. The required measurement or testing of the insulation resistance of all wires against the protective ground (PE/protective earth) must be carried out in accordance with DIN VDE 0100-718 and VDE 0100-482 without disconnecting the neutral conductor in order to detect insulation faults within the system.

In smaller current circuits with few current paths, the measurement of insulation resistance is performed with the help of standard disconnectors (levers) in the terminal block. In the case of larger current circuits with many individual circuits, a disconnecting slider is used for insulation resistance measurement, and ensures contact with the 10x3 N busbar. The insulation resistance measurement itself is performed conveniently and safely via the integrated test tap on the respective installation terminal block on the DIN rail.

Insulation measurement on installation terminal blocks in small circuit groups

Insulation measurement via installation terminals, 3 wire terminals and N-disconnect terminals or neutral conductor disconnect terminals

DIN VDE 0100 Part 718 and DIN VDE 0100 Part 482, from the VDE 0100 (VDE 0100) series of standards, require the insulation resistance of all wires to be measured / tested against the protective ground (earth / PE) without disconnecting the neutral conductor. In buildings with many FI/LS circuits, each room or current path represents a single circuit which must be considered separately during testing.

With AITB installation terminals, each N potential can be routed separately via individual disconnectors and separated for insulation measurement. Resistance can be measured conveniently and safely with the specified test voltage via the integrated test tap at the respective connection point.

Insulation measurement at installation terminal blocks in large circuit groups

Installation terminals, 3 wire terminals and N-disconnect terminals or neutral conductor disconnect terminals Insulation measurement

In the case of large circuit groups, safe contact to the copper bar is established via an N-disconnect slider on the N-disconnect terminal block. This closes a circuit that extends over the isolating slider to the copper busbar. When the slider is levered to the end position, it opens the contact to the N busbar.

The circuit is interrupted and the insulation resistance can be measured conveniently and safely with the specified test voltage. An integrated test tap is available at the respective connection point for this purpose. The position indicator on the disconnect slide indicates the current status of the system, i.e. the contact to the busbar. It can also be read in the wired state.

Sophisticated and uniform accessories

Designing terminal blocks for the building industry requires a large number of individual accessories that must be linked together to meet the criteria of the standard. Compliance with clearances and creepage distances, finger safety or even the scannability of the functional areas are just some of the required and desired properties. Maximum flexibility must be ensured for the individual design of the switchgear for planning, installation and later operation.

Klippon® Connect accessories for building installation wiring meet these specifications and requirements. A uniform busbar system enables the combination of different connection systems (PUSH IN connection and screw connection) and uniform accessories. The range extends from the end plate, to the 10x3 copper busbar including accessories, to various feed options and connection terminals for the busbar system.

Clean and clear distinction of internal and external wiring within the cabinet

Neutral conductor feed via the isolating function of the installation terminals, 3 wire terminals and N isolating terminals or neutral conductor isolating terminals

With the AITB 16 BB NLO, the neutral conductor busbar is integrated into the system quickly, safely and without any additional tools. As with the installation terminals, the internal wiring in the control cabinet is in the direction of the neutral conductor busbar. This creates a clear visual distinction between internal wiring at the switchgear manufacturer and external wiring on the construction site. The AEB ITB 16 BBBL, without connection function for a conductor, completes the portfolio.

Finger safety - Covering live components

Finger safety or finger protection and contact protection of the disconnection function of the installation terminals, 3-wire terminals and N-disconnect terminals or neutral conductor disconnect terminals

The BB-CV AITB 3X10 cover profile ensures the necessary finger safety within the terminal strip. It secures overhanging parts of the busbar, which are provided as a reserve within the switchgear, against unintentional contact during maintenance work or measurements. The cover profile can be flexibly and individually cut to length.

End bracket, support block and end plate cleverly combined in one product

Clearly arranged finger safety or finger protection and contact protection of the disconnection function of the installation terminals, 3-wire terminals and N-disconnect terminals or neutral conductor disconnect terminals

The AEB ITB 2.5/4 BB BL is one of the all-rounders in the Klippon® Connect accessories for building installation wiring. The end bracket serves as a support block for the busbar. Because it has a contour identical to the three level installation terminal blocks AITB 2.5 BB... it can also be used for visual separation within the terminal strip, or as an end plate. This saves additional components and working time. A holder for labeling (WAD 5) is available on the head side of the products.

This is a YouTube video. By clicking on this video, you agree to Google/YouTube's Privacy Policy & Terms of Use . You also agree to our Privacy Policy.


Consulting & Support