prEN IEC 63044-3:2026

The IEC 63044 series deals with developing and testing Home and Building Electronic Systems (HBES) and Building Automation and Control Systems (BACS).
This group safety publication is primarily intended to specify the electrical safety requirements for an HBES/BACS network and for the equipment interfaces to an HBES/BACS network under normal and single-fault conditions, unless equivalent or higher requirements are included in the product standard.
It does not apply to interfaces to other networks.
NOTE An example of other networks is a dedicated ICT network covered by IEC 62949.
This document does not cover the electrical safety requirements for the devices connected to the HBES/BACS, that are covered by the applicable product standard, except for the equipment interfaces to an HBES/BACS network.
This document covers the following requirements and compliance criteria:
– protection against hazards from the device;
– protection against overvoltages on the network;
– protection against touch current;
– protection against hazards caused by different types of network;
– protection of the communication wiring against overheating caused by excessive current.
This document is also intended to be used by technical committees in the preparation of product standards for the safety requirements of the equipment interfaces to be connected to an HBES/BACS network, in accordance with the principles laid down in IEC Guide 104.