Mating and voltage – the fit constraint
The 3RW4723-1SC44: This control unit is built for the 3RW4423 soft starter frame — it is not a standalone starter and does not fit other 3RW4x series without verifying the base unit. The 230 V control supply must match the panel's control transformer tap; wiring is via screw terminals, not spring-cage or push-in.
