Schneider Acti9 Smartlink SI B Communication Interface

The Schneider Electric Acti9 Smartlink SI B is a DIN-rail-mounted Modbus RTU communication interface that connects up to 7 Acti9 iOF+SD24 auxiliary contacts (combined OF trip indicator and SD auxiliary switch) and iEM3 energy meters to a Modbus RTU RS-485 network, enabling remote reading of circuit breaker open/close status, trip status, and energy consumption data from a SCADA, BMS, or energy management system without hard-wired individual I/O connections. A single Smartlink SI B module replaces the equivalent of 7 separate digital I/O cable runs between a distribution board and the control room, reducing panel wiring complexity, cable cost, and commissioning time on multi-circuit monitoring projects. The iOF+SD24 auxiliary contact provides both the normally-open circuit breaker auxiliary (for status monitoring) and the normally-closed trip indicator (for fault alarm) on a single 2-pole Acti9 add-on module, giving two critical monitoring signals per circuit from a single add-on accessory.

The Smartlink SI B operates from a 24 V DC power supply, draws under 1 W, and provides an RS-485 Modbus RTU output with configurable slave address for daisy-chain connection with other Smartlink modules and Acti9 iEM3 energy meters on a single building Modbus network. Each connected iOF+SD24 status and each iEM3 energy reading maps to a pre-defined Modbus register, enabling plug-and-play integration into EcoStruxure Building Operation, Ignition, AVEVA, or any Modbus-capable BMS without custom driver development. The module's compact 2 DIN module width and the elimination of separate I/O wiring make it the most space-efficient electrical distribution board monitoring solution for Saudi commercial building energy management projects.

In Saudi Arabia, Acti9 Smartlink is specified in commercial building electrical distribution projects that require remote circuit breaker monitoring and energy sub-metering for green building certification — particularly projects targeting SGBC Mostadam certification and SEC sub-metering compliance. NEOM's commercial buildings, ARAMCO facility distribution boards, and ROSHN mixed-use development common area distribution boards use Smartlink to provide the circuit-level energy visibility required for ASHRAE 90.1 and SGBC energy performance documentation. Saudi hospital electrical engineers increasingly specify Smartlink for distribution board circuit monitoring in critical power zones where MCB trip indication must be reported to the main electrical SCADA.

Razz Middle East stocks Acti9 Smartlink SI B, iOF+SD24 auxiliary contacts, and iEM3 energy meters as a coordinated sub-metering and monitoring system for commercial building distribution boards. We provide complete Modbus network design, register mapping documentation, and BMS integration support for Smartlink-based monitoring systems across Saudi Arabia.