Siemens 3RK1304-5KS40-4AA0 Direct Starter Engine Starter

Siemens ET 200pro DSE ST Direct-On-Line (DOL) motor starter, order number 3RK1304-5KS40-4AA0, is a compact direct starter designed for ET 200pro backplanes that start three-phase motors directly from the supply. It employs standard mechanical switching with electronic overload protection and is rated for 0.9 kW at 400 V AC-3, with a current range of 0.15 A to 2.00 A, without a brake contact. This 3RK1304-5KS40-4AA0 device is intended for on-panel motor control within SIMATIC ET 200pro DSE ST configurations, offering integration with Siemens automation hardware and backplane systems. Typical applications include small to mid-size motor starters in automation panels where reliable overload protection, compact footprint, and seamless ET 200pro integration are required.