Siemens 3RK1304-0H500-6AA0 Electronic Soft Starter

Siemens 3RK1304-0H500-6AA0 Electronic Soft Starter is a module in the SIMATIC ET 200 pro motor-starter family designed to provide electronic soft-start control for three-phase motors operating on 400 V AC networks. As part of the ET 200 pro line, it is intended for installation in automation cabinets and reduces inrush current by ramping motor voltage smoothly during startup, offering a more controlled and reliable motor start compared with direct-on-line switching. The 3RK1304 family is documented by Siemens as electronic starters within ET 200 pro, and the 0H500-6AA0 variant appears in official product literature and certification materials alongside related modules in the ET 200 pro portfolio. For exact electrical ratings, input configurations, mounting options, and compatibility with other ET 200 pro modules, consult the Siemens data sheet specific to 3RK1304-0H500-6AA0 and the ET 200 pro motor-starter catalog. This device supports standard field wiring for ET 200 pro installations and is typically used in applications where reliable motor starting and controlled acceleration are important, such as conveyors, pumps, fans, and hoists in manufacturing and process environments.