Control unit for the 3RW4076 frame
The Siemens 3RW4776-6SB30 is a control unit designed for the 3RW4076 soft starter in Size S12, with screw terminals and a 115 V control supply.
What the 115 V control supply means for panel integration
The 115 V control voltage matches North American control transformer secondaries — no step-down or separate 24 VDC power supply needed if the panel already runs 115 V control circuits. Screw terminals on the Size S12 footprint mean the wiring lands with ring or fork lugs, not push-in connectors — plan for a screwdriver-accessible terminal position in the panel layout.