SIEMENS C98043-A7125-L100 6RY1803-0GA20 Drive Control Module | Replacement, Equivalent & Selection Guide
The SIEMENS C98043-A7125-L100 (6RY1803-0GA20) is an industrial drive control board designed for use in Siemens SIMOREG DC-MASTER and related drive systems. As a certified sourcing partner, Konmask.com supplies this module with full traceability, supporting engineers and procurement teams in MRO, system upgrades, and obsolescence management.
Technical Specifications
- Manufacturer: Siemens AG
- Part Number: C98043-A7125-L100
- Reference Number: 6RY1803-0GA20
- Product Series: SIMOREG DC-MASTER / C98043 Series
- Module Type: Drive Control / Regulation Board
- Form Factor: PCB plug-in board
- Weight: approx. 1,500 g
- Condition: New / Refurbished (specify on inquiry)
- Origin: Germany (Siemens OEM)
Compatible Replacement & Equivalent Models
If the original part is unavailable or discontinued, the following models may serve as functional equivalents or drop-in replacements (subject to engineering verification):
- SIEMENS C98043-A7125-L2 — earlier revision, same form factor
- SIEMENS C98043-A7125-L4 — mid-series revision
- SIEMENS 6RY1803-0GA04 — alternate reference for compatible drive boards
- SIEMENS C98043-A7002 series — cross-compatible in select SIMOREG configurations
- ABB DCS800 Control Board — cross-brand alternative for DC drive retrofit projects
⚠ Always verify firmware version, connector pinout, and drive firmware compatibility before substitution. Contact our engineers for a free compatibility check.
Why Choose the Original Model
- Factory-calibrated regulation parameters for SIMOREG DC-MASTER drives
- Full backward compatibility with existing Siemens drive firmware
- Guaranteed connector and slot compatibility — no mechanical modification required
- Traceable serial number and OEM certification for audit compliance
- Reduced commissioning time vs. third-party alternatives
Typical Applications
- DC motor speed and torque regulation in heavy industry
- Steel mill rolling line drive control
- Paper machine and printing press drive systems
- Crane and hoist drive control panels
- MRO replacement for aging SIMOREG DC-MASTER installations
- Spare parts inventory for power plant auxiliary drives
System Compatibility
- Primary Platform: Siemens SIMOREG DC-MASTER (6RA70 series)
- Compatible Chassis: C98043-A7125 board slot
- Firmware: Compatible with SIMOREG firmware V3.x and above (verify with drive nameplate)
- Communication: Supports PROFIBUS-DP via optional interface board
- Power Supply: Derived from drive main board — no external supply required
Selection Guide
Use the following criteria to confirm this module is the correct choice for your application:
- ✅ Your drive is a Siemens SIMOREG DC-MASTER (6RA70xx)
- ✅ The existing board label reads C98043-A7125-L100 or 6RY1803-0GA20
- ✅ You require a direct OEM replacement without firmware re-flashing
- ✅ Your application demands certified traceability (ISO, CE, or plant audit)
If your drive model differs, or you need a cross-brand equivalent, contact our technical team with your drive nameplate data for a tailored recommendation.
Quality Assurance & Sourcing
- All modules are inspected and tested prior to dispatch
- Sourced from authorized Siemens distributors and certified MRO channels
- Packaging: anti-static ESD bag + foam-lined carton
- Documentation: test report, packing list, and certificate of conformity available on request
- Warranty: 12 months from date of shipment (DOA replacement policy)
How to Order
- Click Add to Cart or Contact Us for bulk / project pricing
- Provide your drive model number and installation site for compatibility confirmation
- Our team will confirm lead time, stock status, and shipping options within 24 hours
- Payment: T/T, PayPal, or trade credit (approved accounts)
- Shipping: DHL / FedEx Express worldwide — typical lead time 3–7 business days
Replacement & Compatibility FAQ
Q: Can C98043-A7125-L100 replace an earlier L-revision board?
A: In most cases yes, as Siemens maintains backward compatibility within the C98043-A7125 series. However, always confirm the drive firmware version before swapping.
Q: Is the 6RY1803-0GA20 reference number the same part?
A: Yes. 6RY1803-0GA20 is the Siemens order reference that corresponds to the C98043-A7125-L100 board assembly.
Q: Do you supply refurbished units?
A: Yes. Refurbished units are available at reduced cost and include a full functional test report. Please specify NEW or REFURBISHED when inquiring.
Q: Can this board be used in a non-Siemens drive?
A: This board is designed specifically for Siemens SIMOREG platforms. Cross-brand use requires custom engineering and is not recommended without professional assessment.
Q: What is the lead time for out-of-stock units?
A: Typical sourcing lead time is 2–4 weeks for discontinued or low-stock items. Contact us early for project-critical timelines.
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