ABB SA/M2.16.1 is the ABB i-bus® KNX Switch Actuator Module, 2-fold, 16 A. It switches two independent electrical loads through potential-free relay contacts. The external load supply is independent of the Room Controller.

It snaps into a compatible RC/A4.2 or RC/A8.2 Room Controller slot. The host supplies the module interface, detects the inserted type and provides KNX communication, ETS parameterisation and manual functional testing. The module is not a standalone KNX device.

Function and Application

• Channels: 2 normally-open, potential-free relay outputs.
• Application: Two-channel switching of lighting and general electrical loads.
• Host compatibility: RC/A4.2 and RC/A8.2 basis devices.
• Commissioning: Through the selected host Room Controller application; there is no separate module KNX address or product database.

At a Glance

Specification	Detail
Catalog description	Switch Actuator Module, 2-fold, 16 A
Order code	SA/M2.16.1 (2CDG110100R0011)
EAN	4016779583640
Channels	2 normally-open, potential-free relay outputs
Compatible hosts	RC/A4.2 and RC/A8.2
Rated Current	16 A
Rated Operational Voltage	230 V AC
Connected Load	2300 W (ABB product field)
Load Supply	External and independent of the Room Controller
Dimensions	93 × 49 × 42 mm (D × W × H)
Net weight	0.12 kg
Published protection value	ABB currently publishes IP54 for the product; treat this as a configured Room Controller value, not a freestanding enclosure rating.

Installation and Safety

The potential-free outputs do not mean the connected load circuit is de-energized. Isolate every external supply and observe the contact ratings before work. Isolate the Room Controller and all field/load circuits before inserting, removing or wiring the module. ABB currently publishes IP54 for the product; treat this as a configured Room Controller value, not a freestanding enclosure rating.

Use the model-specific technical data, instructions, diagrams and declarations below. Shared manuals may retain historical host names, while ABB's current compatibility records explicitly associate this module with RC/A4.2 and RC/A8.2.