# Siemens SIRIUS 3RW3027-1BB04 Soft Starter, 3-Phase, 15kW at 400V, 32A, 200-480V AC, 24V AC/DC Control Voltage

**URL:** https://aio.lv/en/product--siemens-3rw3027-1bb04--3271804
**Data updated:** 2026-05-27 17:50 (EEST)
**Category:** Control Systems
**Manufacturer:** Siemens
**Manufacturer code:** 3RW3027-1BB04
**EAN:** 4011209719446
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 418.99 €
**Prices and availability valid until:** 2026-08-08 23:59
**Price without VAT (21%):** 346.27 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rw3027-1bb04--3271804

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 28.07.2026 | free |
| Pickup points | 31.07.2026 | 1.89 EUR |
| Courier delivery to door | 31.07.2026 | 4.99 EUR |

## Summary description

The Siemens SIRIUS 3RW3027-1BB04 is a compact 3-phase soft starter designed for smooth motor starting and stopping. It operates with a rated power of 15kW at 400V and a current of 32A, supporting a voltage range of 200-480V AC. Featuring a 24V AC/DC control voltage, this S0 size device reduces mechanical stress and current peaks in industrial motor applications, ensuring reliable performance and extended equipment lifespan.

## Long description

The Siemens SIRIUS 3RW3027-1BB04 is a high-performance 3-phase soft starter engineered for the controlled starting and stopping of induction motors. By providing a smooth ramp-up and ramp-down process, this device effectively minimizes mechanical stress on drive components and reduces electrical current peaks during startup. Designed for industrial environments, this compact S0-sized unit ensures consistent operation and helps prolong the service life of connected machinery.
Advantages
This soft starter offers significant benefits by preventing the sudden torque surges typically associated with direct-on-line starting. Its compact design allows for efficient use of space within control cabinets, while the integrated 24V AC/DC control voltage provides flexibility for various automation systems. By smoothing out the acceleration phase, it reduces wear on belts, gears, and couplings, leading to lower maintenance requirements and increased system reliability over time.
Suitable for
Conveyor belt systems
Pumps and hydraulic systems
Fans and ventilation units
Compressors
Small industrial machinery
When it may not be suitable
This device is not intended for applications requiring frequent starting and stopping cycles at high loads, as it may overheat. It is also not suitable for motors that require high starting torque, as soft starters reduce voltage and consequently reduce the available starting torque.
Key specifications
Rated power: 15kW at 400V
Rated operational current: 32A
Operational voltage range: 200-480V AC
Control supply voltage: 24V AC/DC
Size: S0
Phase: 3-phase
How to use
Installation should be performed by qualified personnel in accordance with local electrical regulations. The unit is designed for mounting on standard DIN rails or screw mounting within an enclosure. Ensure that the supply voltage matches the device ratings and that the control circuit is connected to a 24V AC/DC source. Once installed, the ramp-up and ramp-down times can be adjusted via the integrated potentiometers to suit the specific load requirements of the motor.
What to consider before purchase
Verify that the motor power rating does not exceed 15kW at 400V.
Ensure the control circuit voltage matches the 24V AC/DC requirement.
Check the available space in the control cabinet for the S0 frame size.
Confirm the application does not require high starting torque.
Usage recommendations: Regularly inspect the terminal connections for tightness and ensure adequate ventilation around the unit to prevent thermal overload during operation.

## FAQ

### How much does the Siemens SIRIUS 3RW3027-1BB04 Soft Starter cost, and is it available for purchase?

The price is 418.99 € (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 28.07.2026 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. All transactions are 100% secure and encrypted.

### Can Siemens SIRIUS 3RW3027-1BB04 Soft Starter 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

https://aio.lv/img/cache/product/3271804/52447647_large.webp