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Siemens 3RW4037-1BB14 SIRIUS Soft Starter S2 for enhanced motor control

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Siemens 3RW4037-1BB14

by Siemens

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OverviewAchieve exceptional motor regulation and safeguarding with the Siemens 3RW4037-1BB14 SIRIUS Soft Starter S2. This sophisticated soft starter is expertly crafted to facilitate a seamless and gradual initiation for a diverse range of motor applications, effectively mitigating significant inrush currents and minimizing mechanical strain on your machinery. Suitable for motors reaching up to 30 kW at 400 V, it features a robust 63 A operational current, making it an optimal solution for challenging industrial settings. The 3RW4037-1BB14 operates efficiently across an operational voltage spectrum of 200-480 V AC and boasts a flexible control voltage of 110-230 V AC/DC. Its convenient screw terminal connections ensure simple and secure installation, reflecting Siemens' dedication to dependability and user-friendliness. This soft starter is an essential component for enhancing the longevity and output of your industrial motors.Key Features Optimized Motor Initiation: Enables smooth acceleration, significantly reducing mechanical wear and extending motor operational life. High Operating Current: Rated at 63 A, capable of managing substantial motor loads with consistent performance. Extensive Motor Power Compatibility: Supports motors up to 30 kW at 400 V, providing adaptability for various industrial applications. Wide Voltage Spectrum: Functions effectively within a 200-480 V AC operational voltage range and a versatile 110-230 V AC/DC control voltage. Integrated Bypass Contact System: Maximizes energy efficiency by minimizing power loss during operation, leading to cost reductions. Adjustable Ramp Timings: Allows for precise customization of motor acceleration and deceleration to suit particular application requirements. Comprehensive Motor Safeguarding: Built-in motor overload protection guards against thermal damage, ensuring reliability. Technical Specifications Product Identification: Soft Starter Component Number: 3RW4037-1BB14 Nominal Operating Voltage: 200 to 480 V AC Frequency: 50/60 Hz Control Supply Voltage: 110-230 V AC/DC Operating Current: 63 A Motor Power Rating: 30 kW at 400 V Power Dissipation: Approximately 12 W at operational current Connection Mechanism: Screw terminals Dimensions (Height x Width x Depth): 212 mm x 197 mm x 73 mm Weight: Approximately 1.273 kg Certifications: CE, RoHS Applications Pumping and Ventilation Systems: Ensures gradual starts and stops, preventing water hammer effects and reducing stress on impellers and bearings. Conveyor Systems: Delivers controlled acceleration, eliminating sudden movements that can cause material spillage and mechanical harm. Compressor Units: Minimizes starting torque, thereby protecting critical mechanical parts and extending the equipment's operational life. General Industrial Machinery: Perfect for a broad array of machines requiring reduced mechanical stress and regulated motor operation. Packaging Equipment: Provides precise management for delicate processes, reducing wear and tear on machinery components. Why Choose This Model? Extended Equipment Longevity: By reducing inrush current and mechanical stress, the 3RW4037-1BB14 significantly increases the operational lifespan of your motors and connected machinery. Energy Efficiency: The integrated bypass contact system minimizes power loss, leading to measurable energy savings and reduced operating expenses over time. Dependable Performance: Siemens' renowned engineering guarantees consistent and reliable operation, even in challenging industrial environments. Effortless Integration: With straightforward screw terminal connections and a compact design, installation and integration into existing systems are convenient. Adaptable Control: Adjustable ramp times offer unparalleled flexibility, allowing you to fine-tune motor performance to meet the exact demands of your application. Superior Protection: Built-in motor overload protection provides peace of mind, safeguarding your valuable assets from potential thermal damage. Order NowInvest in the Siemens 3RW4037-1BB14 SIRIUS Soft Starter S2 today and elevate the performance, efficiency, and longevity of your industrial operations.FAQWhat is the primary function of the Siemens 3RW4037-1BB14 Soft Starter?Its primary function is to provide a smooth and controlled start for motors, reducing inrush current and mechanical stress on the machinery, thus extending its lifespan.What motor power rating can this soft starter accommodate?It can manage motors up to 30 kW at 400 V.What is the operational voltage range for the 3RW4037-1BB14?The device operates effectively within a 200-480 V AC operational voltage range.Does this soft starter offer protection features?Yes, it includes built-in motor overload protection to safeguard against thermal damage.Are the ramp times adjustable on this model?Yes, the ramp times are adjustable, allowing for precise customization of motor acceleration and deceleration to suit specific application needs.

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PRODUCT DETAILS

Siemens 3RW4037-1BB14

Overview

This is a genuine Siemens component. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.

Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.

Key Features

  • Genuine Siemens catalog part
  • Tested before shipment
  • Backed by PalmPartsSolution warranty
  • Cross-reference and revision assistance available
  • Compatible with the broader Siemens automation ecosystem

Compatibility

When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Siemens equipment. Where applicable, confirm:

  • Input/output voltage and current rating
  • Communication protocol and network role
  • Mounting form factor and footprint
  • Operating temperature, humidity, and IP rating
  • Required certifications (UL, CE, ATEX, marine, etc.)

Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.

Replacement Information

Three ways to source this part through PalmPartsSolution:

  1. Exact replacement — same Siemens catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. Engineered migration — current-generation Siemens platform with documented conversion notes

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

  • Product Identification: Soft Starter
  • Component Number: 3RW4037-1BB14
  • Nominal Operating Voltage: 200 to 480 V AC
  • Frequency: 50/60 Hz
  • Control Supply Voltage: 110-230 V AC/DC
  • Operating Current: 63 A
  • Motor Power Rating: 30 kW at 400 V
  • Power Dissipation: Approximately 12 W at operational current
  • Connection Mechanism: Screw terminals
  • Dimensions (Height x Width x Depth): 212 mm x 197 mm x 73 mm
  • Weight: Approximately 1.273 kg
  • Certifications: CE, RoHS

Applications

  • Pumping and Ventilation Systems: Ensures gradual starts and stops, preventing water hammer effects and reducing stress on impellers and bearings.
  • Conveyor Systems: Delivers controlled acceleration, eliminating sudden movements that can cause material spillage and mechanical harm.
  • Compressor Units: Minimizes starting torque, thereby protecting critical mechanical parts and extending the equipment's operational life.
  • General Industrial Machinery: Perfect for a broad array of machines requiring reduced mechanical stress and regulated motor operation.
  • Packaging Equipment: Provides precise management for delicate processes, reducing wear and tear on machinery components.

Why Choose the 3RW4037-1BB14?

  • Extended Equipment Longevity: By reducing inrush current and mechanical stress, the 3RW4037-1BB14 significantly increases the operational lifespan of your motors and connected machinery.
  • Energy Efficiency: The integrated bypass contact system minimizes power loss, leading to measurable energy savings and reduced operating expenses over time.
  • Dependable Performance: Siemens' renowned engineering guarantees consistent and reliable operation, even in challenging industrial environments.
  • Effortless Integration: With straightforward screw terminal connections and a compact design, installation and integration into existing systems are convenient.
  • Adaptable Control: Adjustable ramp times offer unparalleled flexibility, allowing you to fine-tune motor performance to meet the exact demands of your application.
  • Superior Protection: Built-in motor overload protection provides peace of mind, safeguarding your valuable assets from potential thermal damage.

Availability & Shipping

  • In stock: 3RW4037-1BB14 ready for immediate dispatch from our Florida warehouse.
  • Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
  • Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
  • Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
  • Buy with confidence: Every 3RW4037-1BB14 ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Siemens

Its primary function is to provide a smooth and controlled start for motors, reducing inrush current and mechanical stress on the machinery, thus extending its lifespan.

Machine down? We ship parts the same day.

New, surplus, and refurbished Siemens inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.

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Product Condition & Firmware

All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.

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