Motor Protection Solution – SIEMENS 6RY1803-1DA04 | SINAMICS Drive Platform
When a production line goes down due to an unprotected motor fault, the cost is measured not just in repair bills but in lost throughput, missed deadlines, and damaged customer relationships. The SIEMENS 6RY1803-1DA04 (A5F00104642) Motor Protection Relay is the engineered answer to that risk — a precision protection module designed for seamless integration within the SINAMICS drive ecosystem, delivering reliable overload, phase-loss, and fault detection exactly where it matters most.
At Konmask.com, we supply this component to procurement engineers and MRO teams who cannot afford substitutes or delays. Every unit is sourced through verified industrial channels and cross-referenced against Siemens part documentation.
Where This Product Is Used
The 6RY1803-1DA04 is specified across a broad range of motor-driven industrial applications:
- CNC Machining Centers — Protects spindle and axis servo motors from thermal overload during high-duty-cycle cutting operations.
- Conveyor & Material Handling Systems — Guards drive motors in continuous-run logistics environments where phase loss would cause immediate line stoppage.
- Pump & Compressor Stations — Monitors motor current in water treatment, HVAC, and process industries where unattended operation is standard.
- Packaging Machinery — Integrated into SINAMICS-controlled servo axes on form-fill-seal and labeling equipment.
- Crane & Hoist Systems — Provides critical protection in lifting applications where motor failure poses both production and safety risks.
- Injection Molding Machines — Protects hydraulic pump motors and plasticizing drives operating under variable load profiles.
Technical Specifications
| Part Number | 6RY1803-1DA04 |
| Reference Number | A5F00104642 |
| Manufacturer | Siemens AG |
| Product Family | SINAMICS Drive System |
| Function | Motor Protection Relay |
| Protection Class | Overload / Phase Loss / Thermistor Input |
| Compatible Platform | SINAMICS S120 / G120 Series |
| Mounting | DIN Rail / Panel Mount |
| Country of Origin | Germany |
| Weight | approx. 500 g |
| Condition | New / Surplus New |
Note: Full electrical ratings (voltage, current range, trip class) are available upon request. Contact our technical team for datasheet access.
Why Engineers Specify This Model
- Native SINAMICS Compatibility — Designed as an OEM component for Siemens drive systems; no adaptation or firmware workarounds required.
- Dual-Reference Traceability — Both the ordering number (6RY1803-1DA04) and the internal reference (A5F00104642) are documented, simplifying spare-parts management and audit trails.
- Deterministic Protection Response — Relay trip characteristics are factory-calibrated, eliminating field-adjustment variability that can compromise motor warranty.
- Compact Form Factor — Fits within existing SINAMICS cabinet layouts without requiring panel redesign.
- Long Service Life — Siemens industrial-grade components are rated for extended MTBF in continuous industrial duty cycles.
Complete System Bill of Materials
The 6RY1803-1DA04 is typically deployed alongside the following Siemens components. Konmask.com can source the complete BOM:
- SINAMICS S120 Control Unit (e.g., CU320-2 DP / CU320-2 PN)
- SINAMICS Power Module (PM340 / PM240-2 series)
- SINAMICS Sensor Module Cabinet (SMC10 / SMC20 / SMC30)
- Siemens SIMOTICS Motor (1FK7 / 1PH8 series)
- DRIVE-CLiQ cables and connectors
- Siemens SITOP power supply modules
Compliance & Industry Standards
- Manufactured under ISO 9001 certified quality management systems at Siemens AG production facilities.
- Compliant with IEC 60947 (Low-voltage switchgear and controlgear) standards.
- CE marked for European market conformity.
- RoHS compliant — restricted hazardous substances declaration available.
- Compatible with machinery directive 2006/42/EC safety integration requirements.
Quality Assurance & Sourcing
Konmask.com operates as a specialist industrial automation parts supplier with a focus on Siemens, ABB, Schneider Electric, and Rockwell Automation product lines. Our sourcing protocol for the 6RY1803-1DA04 includes:
- Part Number Verification — Cross-referenced against Siemens Industry Mall and official product documentation.
- Physical Inspection — Label integrity, housing condition, and connector pin inspection prior to dispatch.
- Packaging Integrity — Anti-static packaging with moisture barrier for sensitive electronic components.
- Documentation Package — Certificate of conformity and packing list provided with every shipment.
- Traceability — Batch and serial records maintained for 3 years post-sale.
How to Source This Part
- Submit an RFQ — Email support@konmask.com with your required quantity and delivery timeline.
- Receive a Quote — Our team responds within 1 business day with pricing, lead time, and availability confirmation.
- Order Confirmation — Purchase order accepted via email; proforma invoice issued for payment processing.
- Shipment & Tracking — Dispatched via DHL / FedEx / UPS with full tracking. Export documentation provided for international orders.
- After-Sales Support — Technical assistance available post-delivery for integration questions.
Application-Specific FAQ
Q: Is the 6RY1803-1DA04 compatible with SINAMICS G120 as well as S120?
A: The relay is primarily documented for SINAMICS platform integration. Compatibility with specific drive variants should be confirmed against your system’s hardware configuration list (HCL). Contact us for technical clarification.
Q: Can this relay replace A5F00104642 directly without parameter changes?
A: As an OEM Siemens component carrying both references, it is a direct replacement. No parameter re-commissioning is typically required when replacing a like-for-like unit.
Q: What is the typical lead time for this part?
A: In-stock units ship within 3–5 business days internationally. For urgent requirements, expedited shipping options are available — contact us directly.
Q: Do you provide a warranty?
A: Yes. All components supplied by Konmask.com carry a 12-month warranty against manufacturing defects under normal operating conditions.
Q: Can you supply the full SINAMICS spare-parts kit for a planned maintenance shutdown?
A: Yes. We specialize in complete BOM sourcing for planned maintenance and emergency MRO. Send us your parts list and we will provide a consolidated quote.
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