NEW ARRIVAL: Siemens 3RK1903-2AA00 ET 200SP Motor Starter BaseUnit Now Available
Model Description
We are pleased to announce the immediate availability of the Siemens 3RK1903-2AA00 BaseUnit, a dedicated mechanical and electrical platform engineered for ET 200SP motor starters and safety motor starters. This Type F0 unit measures 20mm × 117mm × 35mm and provides 8 push-in terminals plus integrated P1/P2 power buses, enabling fast, tool-free mounting of direct-on-line (DOL) or reversing starters up to 5.5kW. The BaseUnit forms a new potential group (max. 10A for P1/P2 buses), allowing engineers to segment 24V DC supply without external terminal blocks—ideal for high-density motor control panels in packaging, conveyor systems, and machine building applications.

Key Features
The 3RK1903-2AA00 delivers industrial-grade reliability with 707V DC isolation between potential groups and push-in spring terminals accepting 0.14–2.5mm² conductors, reducing wiring time by up to 50%. Integrated channel coding and module keying prevent insertion errors, while the 20mm width accommodates the larger footprint of motor starter modules. The unit operates from –30°C to +60°C (horizontal) or –30°C to +50°C (vertical), carries CE, cULus, UL and RoHS approvals, and supports installation altitudes up to 5000m with derating. IP20 finger-safe construction and integrated PE connection ensure safe and compliant installations in industrial environments.
Related Models in the ET 200SP Motor Starter BaseUnit Range
The ET 200SP family offers mechanical variants for every motor control concept. 3RK1903-2BA00 continues the potential group from the left, reducing power segments for simpler wiring. 3RK1903-2AC00 provides a wider 30mm Type F1 footprint for higher-current safety motor starters up to 7.5kW. All motor starter BaseUnits share identical mounting dimensions, color coding, and accessory compatibility with standard ET 200SP I/O modules, enabling unified inventory management and standardized panel design across distributed motor control platforms.
Our Competitive Advantages
As a dedicated Industrial Automation trader, we provide exceptional procurement flexibility and customer-centric service solutions. Our adaptable payment structures accommodate wire transfer arrangements and customized credit facilities for approved partners, removing financial barriers to urgent maintenance requirements. We maintain significant strategic inventory in regional distribution hubs, enabling delivery within 5-7 business days to most industrial centers worldwide. Our extensive sourcing network spans premium European and Asian sensor distribution channels, ensuring authentic Telemecanique component traceability without geographic restrictions. This multi-channel approach guarantees availability during global supply chain disruptions. Our application engineers provide sensor selection consultation, detection distance calculation, and integration support, assisting with control logic configuration and wiring optimization. Through direct manufacturer partnerships and streamlined logistics, we deliver genuine Telemecanique inductive sensors with accelerated fulfillment cycles and competitive pricing structures.
For immediate quotations or technical consultation, please contact our dedicated sales team.
About Us
We are a focused industrial-automation components trader committed to delivering authentic Siemens ET 200SP motor control solutions with speed, flexibility and technical expertise.