Siemens AG 3RK1908-1AA00-0BP0 LC Control Module

The Siemens 3RK1908-1AA00-0BP0 is a 3DI/LC module (connection terminals) for the SIMATIC ET 200SP motor starter, designed to add three local input signals to the motor starter within the ET 200SP distributed I/O system. This compact unit plugs into the ET 200SP motor starter assembly to extend local control options, enabling the motor starter to respond to additional input conditions without a separate controller. The module carries the article designation 3RK1908-1AA00-0BP0 and is described by Siemens as a 3DI/LC module with connection terminals for the ET 200SP motor starter. Key specifications include IP20 protection, dimensions of width 30 mm, height 54.5 mm, and depth 42.3 mm, and it is typically sold as a single unit (pack of 1). Intended for integration into Siemens’ ET 200SP motor-starter configurations, this 3DI/LC module provides three input channels that expand the local functionality of the motor-starter system, making it suitable for compact automation panels where additional signaling is required to trigger starter actions or to interface with nearby control circuitry.