Siemens 3RK1304-5KS40-2AA3 Motor Starter AC-3

Siemens 3RK1304-5KS40-2AA3 is an ET 200pro motor starter (Direct Starter High Feature) designed for field-mounted motor control within the ET 200pro automation system. It directly starts three-phase motors rated AC-3 at 400 V, offering a 0.9 kW output and a control current range of roughly 0.15 to 2.0 A, with an IP65-rated enclosure for use in dusty or washdown environments. The unit provides electronic overload protection and mechanical switching as part of Siemens’ HF direct-starter family, delivering a compact, integrated solution ideal for small-to-medium motor loads in automated lines. This 2AA3 variant sits in the Siemens ET 200pro catalog alongside other 3RK1304-5KS40 configurations, and is commonly deployed in applications such as conveyors, packaging machines, and other plant-floor equipment where robust, space-efficient motor start control with built-in protection is preferred.