Switch actuator (Schaltaktor) 4-channel, 16 A, C-load, ABB REG SA/S4.16.6.2

ABB REG SA/S4.16.6.2 is a DIN-rail mounted 4-channel switch actuator designed for building electrical installations and automation. The unit provides four independently switchable outputs with a rated switching capability of 16 A per channel for C-type loads. Its compact form factor allows installation in distribution or control panels for centralized control of lighting circuits, small motors or other electrical loads within residential and commercial environments.

Advantages

The switch actuator offers four independent channels in a single DIN-rail module, reducing space requirements in control cabinets. Each channel supports a 16 A C-load rating, enabling reliable switching of typical lighting circuits and moderate inductive loads. The device is designed for integration into building control systems and provides stable operation, simple wiring and predictable switching performance. Its standardized DIN-rail form factor and clear terminal layout simplify installation and service.

Suitable for

• Centralized control of lighting circuits in homes, offices and commercial buildings
• Switching of moderate inductive loads such as small motors, pumps or fan coils
• Integration into building automation systems for scene or schedule-based switching
• Replacement or consolidation of multiple single-channel relays into a compact module

Key specifications

• Channels: 4 independent switch outputs
• Rated switching current: 16 A per channel for C-type loads
• Mounting: DIN-rail (EN standard rail)
• Application: AC switching for lighting and moderate inductive loads
• Installation location: distribution or control panels, indoor use

How to use

Install the device on a standard DIN-rail inside a distribution or control cabinet, ensuring power is disconnected before wiring. Connect supply and load conductors to the corresponding input and output terminals according to the circuit design and local wiring regulations. Configure the actuator as part of the building control system using the chosen control bus or interface specified by the system integrator. Verify correct operation by testing each channel under expected load conditions and confirm protective devices and wiring are correctly rated for 16 A switching.

Recommendations

Use the actuator to consolidate multiple switching points into one module to save space and simplify wiring. Verify load types and inrush currents before connecting inductive devices; if inrush exceeds device or circuit protection ratings, add suitable protective components. Follow applicable electrical codes and manufacturer instructions during installation and commissioning.