The EAE SW108 KNX Switch Actuator switches up to eight independent loads at 16 A per channel from the KNX bus. It is designed not only for resistive loads but also for capacitive and inductive loads, including fluorescent ballasts and LED drivers, with a maximum 500 A inrush current capacity for reliable switching of modern lighting gear.

Each relay channel has a front-panel slide switch for local manual ON/OFF override during commissioning. The module is bus-powered — no external auxiliary supply is required — and supports configurable electric current monitoring per channel for diagnostic feedback on the KNX bus.

Key Features — 8 × 16 A Switching

Relay Outputs

• 8 channels: Independently configurable relay outputs.
• 16 A per channel: AC-1 rated switching capacity.
• 500 A inrush: Handles high inrush from fluorescent and LED drivers.
• Load types: Resistive, capacitive, and inductive loads.
• Manual override: Slide switch per channel on the device enclosure.
• Current monitoring: Configurable per channel for diagnostics.
• Bus-powered: No external auxiliary power supply required.

Per-Channel Functions (ETS)

• Stair function: Timed auto-off for staircase and circulation lighting.
• External logic: Control from external logic signals.
• Internal logic: AND/OR logic conditions on the channel.
• Priority function: Command priority levels for safety or override modes.
• Threshold function: Switch based on threshold values (e.g. temperature).
• Transaction time: Configurable delay for switching operations.
• Sweep function: Pre-warning sequence (e.g. blink) before final switch-off.

At a Glance

Specification	Detail
Product type	Switch actuator — 8-fold
Order code	SW108 (SMP SW108)
Channels	8 independent relay outputs
Switching capacity	8 × 16 A
Inrush current	500 A max
Load compatibility	Resistive, capacitive, inductive (LED, fluorescent)
Manual control	Slide switch per channel
Power supply	KNX bus — no auxiliary supply required
Dimensions (H × W × D)	65.5 × 144 × 89 mm (8 MW)
Weight	0.45 kg
Mounting	35 mm DIN rail

Full electrical ratings are listed under Technical Specifications. Datasheet, product manual, installation manual, ETS application, and certificates are under Downloads.

Applications and KNX Integration

• General lighting: Switch lighting circuits, sockets, and ventilation loads from KNX sensors and schedules.
• LED and fluorescent: High inrush rating suits modern drivers and electronic ballasts.
• Dimming projects: Pair switched mains with 1–10 V dimming via the EAE SD110 1–10 V Dim Actuator, or use phase dimming via the EAE UD106 Universal Dimmer.
• Room-level control: For combined lighting, blinds, and HVAC in one module, consider the EAE RCU0800 Room Control Unit.
• Power supply: Ensure adequate KNX bus current from an EAE PS640 KNX Power Supply when multiple actuators share a line.

Choosing EAE Switch Actuators

The SW108 provides eight 16 A channels with advanced per-channel logic — the standard choice for multi-circuit switching in commercial panels. For analogue dimming rather than on/off, choose the SD110 (1–10 V) or UD106 (phase dimming).