Advanced Motor Circuit Protection: The Siemens 3RV2031-4VA10
The Siemens 3RV2031-4VA10 is a high-performance motor starter protector from the modern SIRIUS 3RV2 series. Specifically designed for the protection and switching of three-phase motors up to 18.5 kW, this Size S2 device delivers exceptional thermal-magnetic protection. Engineered to meet the demands of the latest industrial automation standards, it provides a reliable safeguard against overloads and short circuits. Its robust construction and high breaking capacity make it a core component for heavy-duty industrial applications where system stability and motor longevity are essential.
Core Technical Specifications and Reliability
According to official Siemens technical documentation, this circuit breaker is optimized for high-current environments and modular efficiency.
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Part Number: 3RV2031-4VA10
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Current Setting Range: 32 … 40 A (Adjustable thermal overload).
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Instantaneous Short-Circuit Release: 520 A.
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Frame Size: S2 (Modern SIRIUS Innovation design).
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Breaking Capacity ($I_{cu}$): 65 kA at 400 V AC.
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Rated Operational Voltage: 690 V AC.
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Connection Technology: Screw-type terminals for high-integrity wiring.
Strategic Commercial Advice for Drive Systems
From a procurement and strategic standpoint, the 3RV2031-4VA10 is a vital asset for facilities requiring high-power motor control. The 32-40A range is commonly used for heavy-duty fans, conveyors, and industrial pump systems, making it a critical item for spare parts inventory management.
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Superior Breaking Capacity: With a 65 kA breaking capacity at 400V, this protector offers a higher safety margin than standard units. This commercially translates to better protection for your overall electrical infrastructure during fault conditions.
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Space and Installation Efficiency: The S2 frame size is optimized for high power density. By integrating multiple protection functions into one compact module, you reduce the required rail space and the total complexity of your control cabinet wiring.
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Global Standardization: The 3RV2 series is fully certified for international use (CE, UL, CSA, CCC), ensuring that machinery built with these protectors can be exported and serviced globally without regulatory hurdles.
Professional Sourcing and Global Logistics
As specialized suppliers of Siemens industrial control hardware, we provide the commercial reliability and global shipping efficiency your operations require.
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100% Genuine Siemens: We guarantee that every 3RV2031-4VA10 is an original, brand-new factory product in its original packaging.
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Rapid Global Dispatch: We leverage an express logistics network to ensure your protection components reach your facility quickly, minimizing potential production downtime.
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Reliable Availability: We maintain consistent stock of the SIRIUS 3RV2 series to support your urgent maintenance needs and new project deadlines.
