Description
Introduction
The EAE SW108 Switch Actuator is a high-performance KNX DIN-rail device designed for reliable load switching across 8 independently configurable channels. Built to handle standard resistive loads as well as complex capacitive and inductive loads, each channel supports up to 16A continuous current and withstands high peak inrush currents up to 500A. This high inrush tolerance makes it an ideal solution for controlling modern lighting loads such as LED drivers and electronic fluorescent ballasts. This device is part of our KNX system components range.

Engineered for efficient cabinet integration, the SW108 does not require an external power supply and operates directly via the KNX bus. Every output channel features an integrated manual slide switch for direct relay override during setup or maintenance. Comprehensive software features include configurable electric current control alongside extensive channel functions such as stair lighting, threshold detection, priority control, sweep functions, transaction timing, and internal or external logic operations.
Key Features
- 8 independently configurable relay channels
- 16A continuous switching current rating per channel
- 500A high peak inrush current capacity
- Designed for resistive, capacitive, and inductive loads
- Optimized for LED drivers and fluorescent ballasts
- Manual control slide switches on each individual relay
- Operates without an external auxiliary power supply
- Per-channel functional support: Stair function, External logic, Internal logic, Priority, Threshold, Transaction time, and Sweep function
Benefits
- High Peak Inrush Current Resistance: Designed to sustain up to 500A inrush current, safeguarding the relay contacts against modern capacitive LED driver surges.
- Versatile Load Compatibility: Safely handles resistive, capacitive, and inductive loads, including fluorescent ballasts and LED power supplies.
- Direct Manual Control: Features dedicated manual slide switches on each individual channel relay for manual testing and local operation.
- Bus-Powered Operation: Eliminates the need for an external auxiliary power supply, simplifying electrical panel distribution and wiring.
- Advanced Parameter Configuration: Supports customized per-channel logic functions, stair timing, priority modes, threshold values, transaction timing, and sweep routines.
Technical Specifications
Applications
Commercial and residential KNX automation systems requiring robust switching of high-inrush LED lighting and ballasts. Explore more EAE KNX solutions for professional building automation projects.
Distribution panel switching where individual relay manual overrides and advanced internal/external logic operations are required across 8 independent circuits.
Installation Notes
- Mount standard distribution board hardware and connect to the KNX bus line; no additional power supply wiring is necessary.
- Utilize individual slide switches on the front panel for manual relay operation and commissioning verification.
Developer Resources
- Official ETS product database files and technical documentation are available directly from the manufacturer product page.
FAQ
Does the EAE SW108 require an auxiliary power supply?
No, the EAE SW108 does not require an external power supply and operates directly from the KNX bus. For certificates and current technical files, refer to the manufacturer technical documentation.
What is the peak inrush current capability of the SW108 channels?
Each channel of the SW108 can handle a peak inrush current of up to 500A.
Can the relays be operated manually on the device?
Yes, each relay is equipped with a manual control slide switch on the unit.
What logic functions are available per channel?
Channels support internal logic, external logic, stair lighting, priority control, threshold function, transaction time, and sweep functions.
What is the exact product model?
The order/model code for this page is smp sw108. Match it against project documents before purchase.
Who is the manufacturer?
This product is manufactured by EAE.
Conclusion
The EAE SW108 Switch Actuator (smp sw108) offers an 8-channel switching solution built for modern capacitive and inductive lighting loads. With 16A switching capacity, 500A inrush current tolerance, manual slide switch controls, and auxiliary power independence, it provides reliable switching control for professional KNX projects. Installers and system integrators can review our installer purchasing support options.






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