What this reversing combination starter does
The Siemens 3RA1215-1GA15-1BF4 is a reversing combination starter in the SIRIUS S00 frame, integrating a motor-protective circuit breaker, a reversing contactor pair, and auxiliary contacts into a single DIN- or panel-mount unit. The 4.5-6.3 A current range and 230 VDC control voltage are sized for reversing applications on small three-phase motors — conveyors, hoists, or gate drives that need forward/reverse switching under a single enclosure.
The 4.5-6.3 A rating is the motor full-load current range the starter protects and switches — set the overload relay within this band to match the motor nameplate. The 230 VDC control voltage is the coil rating; confirm your control supply delivers clean DC at that level, as the coil drops out below approximately 185 VDC. The S00 frame size occupies a compact footprint on DIN rail or panel, leaving room for additional SIRIUS modules in the same row.
The reversing contactor pair is mechanically interlocked — no external interlock wiring needed. The MSP auxiliary (1 SPDT) and contactor auxiliary (2 NO) are pre-wired to the terminal block; use them for forward/reverse status and fault indication. Wire the motor leads to the T1/T2/T3 output terminals; the line supply connects to the L1/L2/L3 input side of the integrated circuit breaker.