Siemens 3RA6120-0DB30 Compact Load Feeder Module

Siemens 3RA6120-0DB30 is a SIRIUS compact load feeder designed as a direct-on-line (DOL) motor starter for three‑phase machines up to 12 A. It provides a 690 V main circuit and a 24 V AC/DC control circuit, operates at 50/60 Hz, and is designed for panel mounting with plug‑in main and auxiliary circuit connections (no terminal blocks required). The device supports an auxiliary switch option and carries IP20 protection for use inside control cabinets. The current range is 3–12 A, making it suitable for small‑ to mid‑size motors in automation tasks such as conveyors, pumps, and machine tools. The coil control is compatible with 24 V AC/DC logic, simplifying integration with standard control circuits. Power losses are modest: about 1.8 W at rated current in hot operation, 0.6 W per pole at rated current, and roughly 2.9 W typical no-load power consumption. With a 6,000 V surge resistance and 690 V insulation, it meets common safety margins for industrial power distribution. Part of the SIRIUS 3RA6 family, this compact load feeder emphasizes space efficiency and straightforward wiring, enabling reliable motor starting in compact control panels where a dedicated DOL starter is appropriate.