6RY1243-0DA01 is a Siemens SIMOREG power-interface assembly used in the 6RA24 DC-drive platform. Siemens service identification associates it with the C98043-A1601-L4 board identity and the gating plus supply interface function.

The board is selected as part of a specific power-converter arrangement. Semiconductor connections, firing interfaces, supply plugs and host ratings must be compared with the removed assembly before exchange.

• Provides a traceable interface between SIMOREG control electronics and the installed power section.
• Retains the paired Siemens order number and printed-board reference for legacy service work.
• Supports controlled replacement based on the converter nameplate and internal connection map.
• Separates power-interface identity from similarly named SIMOREG control and supply boards.

• Verify the complete 6RA24 type designation, current class and power-section drawings.
• Match C98043-A1601-L4 and the board hardware index to the removed assembly.
• Compare gating leads, transformer connections, supply plugs and mounting hardware.
• Do not substitute a neighboring 6RY1243 suffix solely because the board outline is similar.

• Record gate-lead positions, supply wiring, board links and connector keys before removal.
• Prove mains isolation and DC-link discharge using the approved SIMOREG service procedure.
• Inspect the associated power semiconductors, fuses and insulation before energizing the replacement.
• Use controlled firing and current checks before returning the DC drive to production load.