ABB ES/M2.24.1 is the ABB i-bus® KNX Electronic Switch Actuator Module, 2-fold, 24 V. Its two overload-proof, noise-free and wear-resistant semiconductor outputs control electrothermal valve drives at 12/24 V AC/DC with up to 700 mA continuous current.

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 semiconductor outputs.
• Application: Silent low-voltage switching of resistive loads, especially electrothermal heating or cooling valve drives.
• 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	Electronic Switch Actuator Module, 2-fold, 24 V
Order code	ES/M2.24.1 (2CDG110014R0011)
EAN	4016779583626
Channels	2 semiconductor outputs
Compatible hosts	RC/A4.2 and RC/A8.2
Nominal Load Voltage	12/24 V AC/DC (official long description)
Module Supply	Separate 24 V DC supply described by the shared module manual
Continuous Current	Maximum 700 mA per output
Inrush Current	Maximum 1 A
Load Type	Resistive loads / electrothermal valve drives
Dimensions	93 × 49 × 42 mm (D × W × H)
Net weight	0.127 kg
Published protection value	ABB currently publishes IP54 for the product; treat this as an installed Room Controller system value, not a freestanding enclosure rating.

Installation and Safety

Provide the external low-voltage supply and wire its polarity and load circuits exactly as shown in the ES/M2.24.1 instructions. 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 an installed Room Controller system 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.