Finder 19.3K.9.030.4300 – 19 Series Relay actuators & Status indicating modules

Why Choose the Finder 19.3K.9.030.4300 KNX Switching Actuator?

The Finder 19.3K.9.030.4300 is a professional 3-channel KNX switching actuator designed for automated control of electric roller shutters, blinds and motorised shading systems. Part of the Finder 19 Series, this intelligent building automation module combines three independently configurable shutter-control channels, 16 A relay contacts and integrated KNX communication in a compact DIN rail-mounted device.

Designed to control up to three motorised shutters or blinds, the actuator incorporates six bistable relay outputs arranged as three logically interlocked motor-control channels. This arrangement supports coordinated up-and-down motor operation while helping prevent conflicting directional commands. It also provides slat management functions for compatible Venetian blinds, allowing precise adjustment of shading and natural light.

Powered directly by the KNX bus at a nominal 30 V DC, the Finder 19.3K.9.030.4300 eliminates the need for a separate auxiliary module supply. With ETS software configuration, manual output controls, LED status indicators and scene management, it provides a flexible solution for residential, commercial and industrial building automation installations.

Key Advantages

• Three KNX shutter-control channels for operating up to three independent motorised blinds or roller shutters.
• Six integrated relay outputs arranged into three motor-control channels.
• 16 A contact rating at 250 V AC for compatible electrical loads.
• KNX bus-powered operation with no separate auxiliary supply required.
• Logically interlocked directional outputs for controlled shutter and blind motor operation.
• Slat management functionality for compatible Venetian blind systems.
• ENEC-approved bistable relay technology with a specified peak current capability of up to 120 A for 5 ms.
• Manual output control for convenient testing and commissioning.
• Individual LED status indication provides visual feedback for output operation.
• Scene management supports coordinated shading automation.
• ETS configuration allows integration into standard KNX building automation systems.
• 35 mm DIN rail mounting enables straightforward installation in electrical distribution boards.

Key Features

• Finder 19 Series KNX switching actuator.
• Three independent roller shutter or blind control channels.
• Six relay contacts arranged into three interlocked output pairs.
• 16 A, 250 V AC contact rating.
• KNX TP bus communication.
• 30 V DC nominal KNX bus supply.
• 21–32 V DC operating bus voltage range.
• Less than 15 mA KNX bus current consumption.
• ENEC-approved bistable relay technology.
• Up to 120 A peak inrush current for 5 ms.
• Slat positioning and blind management.
• Independent channel logic and operating functions.
• Programmable scene management.
• Manual TEST and output control buttons.
• LED indicators for output status and programming.
• ETS software commissioning and parameter configuration.
• 35 mm DIN rail mounting to EN 60715.
• IP20 enclosure protection.

Intelligent KNX Shutter and Blind Control for Building Automation

The Finder 19.3K.9.030.4300 provides integrated control of up to three motorised shutters or blinds through a standard KNX building automation network. Each channel uses a pair of logically interlocked relay outputs to manage the direction of a connected motor. The actuator supports individual shutter operation, compatible blind slat adjustment and coordinated control through programmed KNX scenes.

Using ETS configuration software, installers can assign the device's KNX address and configure the required operating parameters. The actuator also includes a dedicated PROG button for programming mode, a TEST button for enabling local output control and individual output buttons for commissioning. LED indicators provide visual confirmation of programming and output activity.

When first connected to a powered KNX bus, the actuator requires an approximately 18-second start-up period to accumulate sufficient energy for relay operation. Commands are not executed during this interval. The device is intended for building automation rather than safety-critical control, and connected motors must comply with the manufacturer's specified electrical ratings.

Typical Applications

• KNX smart home automation systems.
• Automated electric roller shutter control.
• Motorised Venetian blind operation and slat adjustment.
• Commercial office shading automation.
• Hotel and hospitality room automation.
• Residential window covering and shading systems.
• Building management system integration using KNX.
• Automated solar shading and daylight management.
• Electrical distribution boards with KNX control equipment.
• Multi-room shutter and blind scene management.