# Siemens Sirius 3RW4037-1BB14 Soft Starter 30kW 400V 110-230V AC/DC

**URL:** https://aio.lv/en/product--siemens-3rw40371bb14--1782868
**Data updated:** 2026-05-22 07:20 (EEST)
**Category:** Control Systems
**Manufacturer:** Siemens
**Manufacturer code:** 3RW40371BB14
**EAN:** 4011209692077
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 1 283.49 €
**Prices and availability valid until:** 2026-07-29 23:59
**Price without VAT (21%):** 1 060.74 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rw40371bb14--1782868

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 17.07.2026 | free |
| Pickup points | 22.07.2026 | 1.89 EUR |
| Courier delivery to door | 22.07.2026 | 4.99 EUR |

## Summary description

The Siemens Sirius 3RW4037-1BB14 is a high-performance 3-phase soft starter designed for 30kW motors at 400V. It features a control voltage range of 110-230V AC/DC and is engineered for smooth motor acceleration and deceleration. This compact device reduces mechanical stress on drive systems and minimizes current peaks during startup, making it an ideal solution for industrial automation and motor control applications.

## Long description

The Siemens Sirius 3RW4037-1BB14 is a robust 3-phase soft starter engineered for the efficient control of motors up to 30kW at 400V. This device provides a reliable solution for managing motor startup and shutdown processes, ensuring that mechanical stress on the drive system is significantly reduced. By controlling the voltage, it allows for smooth acceleration and deceleration, which helps in extending the operational lifespan of connected equipment and maintaining stable power grid conditions by minimizing current peaks.
Advantages
This soft starter offers significant benefits for industrial motor management by providing integrated electronic overload protection and internal bypass contacts. Its compact design allows for space-saving installation within control cabinets, while the wide control voltage range of 110-230V AC/DC ensures high flexibility for various electrical system configurations. The device effectively prevents mechanical shocks during startup, leading to lower maintenance requirements and improved reliability of the entire drive train.
Suitable for
Industrial conveyor systems
Pump and fan applications
Compressor drive units
General motor control in automation systems
When it may not be suitable
This device is not intended for applications requiring frequent reversing or high-duty cycle jogging operations. It is also not suitable for single-phase motor control or environments where the motor power rating exceeds the specified 30kW limit at 400V.
Key specifications
Power rating: 30kW at 400V
Control voltage: 110-230V AC/DC
Phase type: 3-phase
Integrated overload protection: Yes
Bypass contacts: Internal
How to use
Installation should be performed by qualified personnel in accordance with local electrical regulations. The device is mounted on a standard DIN rail or via screw mounting within an enclosure. After physical installation, connect the main power supply to the input terminals and the motor leads to the output terminals. The control voltage must be connected to the designated terminals to enable the soft start functionality. Configuration settings should be adjusted according to the specific motor requirements to ensure optimal performance.
What to consider before purchase
Ensure the motor power rating matches the 30kW specification at 400V.
Verify that the control voltage supply (110-230V AC/DC) is available in your system.
Check the physical dimensions to ensure compatibility with your existing control cabinet space.
Confirm that the application does not require advanced features like torque control or braking.
Usage recommendations
Always verify that the motor current is within the rated range of the soft starter before commissioning. Ensure adequate ventilation within the control cabinet to prevent overheating during operation.

## FAQ

### How much does the Siemens Sirius 3RW4037-1BB14 Soft Starter 30kW cost, and is it available for purchase?

The price is 1,283.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 17.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment, Leasing for legal entities. All transactions are 100% secure and encrypted.

### Can Siemens Sirius 3RW4037-1BB14 Soft Starter 30kW be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Siemens products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Siemens service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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