3RT1955-5AP31

The 3RT1955-5AP31 is a replaceable coil operating mechanism specifically designed for Siemens SIRIUS large power contactors 3RT105 and 3RT145 (S6 frame). The manufacturer refers to it as a "Changeover operating mechanism." This coil has a rated voltage of 220-240V and supports both AC 50/60Hz and DC operation. It features a standard power-saving circuit design and screw terminals, allowing maintenance personnel to quickly replace the coil module without disassembling the entire contactor. The product weighs approximately 0.546 kg. The manufacturer provides multiple international safety certifications, including CSA, UL, EAC, and RCM, as well as a RoHS compliance declaration, making it suitable for manufacturers of electromechanical equipment or system integrators with high safety requirements.