A potential-free switching contact is a switching output that is not live. This is comparable to a standard light switch to which no cables are connected.
A potential-free switching contact offers the advantage that a wide variety of consumers can be connected. For example, devices with low voltage such as 12V / 24V / 36V or 230V mains voltage can be switched (provided the appropriate voltage source is available). In addition, a potential-free switching contact can also be used as a signalling contact, e.g. for a higher-level control system.
For our thermostats that have a potential-free switching contact, you will find a suitable connection diagram in the online shop and in the corresponding operating instructions.