Siemens 3RT1934-5AP61 Three Phase Electrical Contactor

Siemens 3RT1934-5AP61 is a Sirius size S2 magnet coil designed to energize three‑phase motor contactors in the SIRIUS 3RT2 family, such as the 3RT1033‑1A and 3RT1034‑1A, providing a compact, drop‑in replacement option for maintenance and retrofit projects. This replacement coil operates on 220 V AC at 50 Hz (and 240 V at 60 Hz) and uses screw-terminal connections for secure, reliable wiring, with a form factor that matches the size S2 coil footprint used by Siemens in the field. When energized, the coil attracts the magnetic armature to pull in the contactor's main contacts, completing the circuit to the attached three‑phase motor and enabling controlled start/stop functionality in industrial automation setups. Belonging to the 5AP61 coil family, the 3RT1934‑5AP61 variant is configured specifically for screw terminals in the size S2 range and is intended as a direct replacement for compatible 3RT2 contactors' coils. Before installation, confirm compatibility with your exact contactor model and terminal configuration (for example 3RT1033/1034) to ensure correct pinout, mounting alignment, and electrical ratings are matched to your control system.