Coupling links 2x4P for HIC 63-125A HZI400

What is the HZI400 Busbar Coupler?

It is a mounting component that connects four poles of two HIC disconnectors in the power circuit — creating a common point on the load side. It is not a protective device nor a switch; it is simply a conductor that enables uniform voltage distribution between successive devices without the need for additional wiring.

Who is it for and what is it used for?

For the installer: it eliminates the need to manually connect wires between two disconnectors — instead of three or four connections, a single busbar is sufficient. This simplifies installation, reduces the risk of connection errors, and saves time and space in the cabinet. For the end user: the system becomes more transparent and less prone to failures caused by improperly made connections. The absence of additional screws and wires also reduces the risk of overheating at contact points.

How does it work?

Specifically designed for the HIC 63–125A series, the HZI400 coupler features precisely matched terminals — no adjustment or modification is required. It fits into the terminals like a key in a lock: quickly, without force, and without risk of damage. No tools are needed — it can be inserted by hand. It requires no screws and no additional insulation. It is part of the system and functions only in conjunction with the appropriate disconnectors.

Why not use other busbars?

Because they do not fit. Other models may have different terminal spacings, dimensions, or contact types — even if they appear similar. The HZI400 is designed exclusively for HIC 63–125A, and there is no point in attempting to use it elsewhere. It is not a universal busbar — it is a system component. Using an incompatible part may lead to overloads, overheating, or loss of contact — posing a risk to the installation.

Compliance and Safety

Compliant with the EU Declaration of Conformity for power switches rated 63–3200 A. It is not a standalone component — it functions only as part of the Hager HIC system. It carries no additional safety certifications (e.g., IP), as it is neither an enclosure nor a cover — it is simply a conductor.