This is a kit for an OpenKNX-compatible 8-way switching actuator in a 6 HP control cabinet housing.
The circuit board is manufactured with increased copper thickness for the best possible conductivity and minimal resistance/heat generation.
The switching actuator is equipped with 8 bistable Hongfa HFE20 relays:
- Up to 20 A switching capacity
- At 230 V AC
- Max. inrush current: 320 A (optional 500 A) for 2 ms
The standard screw terminals used are of high quality, but on request a variant from Phoenix Contact with plus/minus screws instead of slotted screws is also available.
The optional housing is printed as standard in an environmentally friendly "PLA+" material consisting largely of biological components (e.g. corn starch). This is dimensionally stable up to an ambient temperature of approx. 55 °C, which is usually sufficient. With constantly high currents on all 8 channels and a high ambient temperature in the control cabinet, printing can also be done in ABS plastic.
For self-soldering, a good soldering iron with sufficient power is required due to the increased copper thickness, since "thermal relief" connections were omitted at relevant soldering points in order to achieve the best possible conductivity and the corresponding soldering pins are thus connected all around to the copper surface.
If you have any questions or feedback about the project, please make contact!
Please note:
To upload the firmware of all OpenKNX compatible projects offered here in the shop, this programmer needed.
Delivery as a kit:
All OpenKNX-compatible projects offered in the shop are delivered as a kit and without software. The user is free to use his own software or the OpenKNX-compatible software, which is available via the OpenKNX “Open Source” directories on GitHub (OAM Switch Actuator) is available. In the latter case, this can be done with the OpenKNX Toolbox easiest.
Since a switching actuator is usually used with 230 V mains voltage, we would like to point out again that this kit is not a finished and certified product. Therefore, use at your own risk!
