What this PCB does in the 3RW44
The 3RW4727-0VC80: This is the firing PCB for a Siemens 3RW44 soft starter, Size 2, rated 600 V. It handles the gate-drive signals to the thyristor stack — not a standalone starter, but the board that fires the SCRs in the power section.
Compliance and substance restrictions
The substance prohibitance date is 03/01/2017, which aligns with the RoHS compliance cutoff for the European directive — the board does not contain restricted substances above the threshold as of that date. Product designation is printed circuit board, confirming this is a subassembly-level line item, not a complete soft starter.