Siemens 3RM1301-1AA04 Semiconductor Motor Starter

Siemens 3RM1301-1AA04 is a compact fail-safe reversing motor starter from the SIRIUS 3RM1 family, designed to safely switch three‑phase motors with forward and reverse rotation in a single, space‑efficient package. It handles a main circuit rated up to 500 V AC and powers motors up to 0.12 kW, with a load current capability of 0.1–0.5 A, making it suitable for small, safety‑critical drive applications. The control coil is 24 V DC, and the unit uses screw terminals for secure wiring, all within a slim 22.5 mm wide enclosure that fits neatly into compact control cabinets. In addition to its reversing capability, this 3RM1 starter is described as a fail‑safe device, aligning with safety standards for automated equipment. The combination of a robust safety profile, slim form factor, and Siemens engineering supports reliable operation in applications where safety interlocks, controlled motor direction, and compact installation are essential. Typical use cases include small conveyors, packaging machines, and other machinery where reversible motor control under strict safety requirements is needed, all while maintaining straightforward wiring and maintenance.