# Siemens 3RW4027 Soft Starter, 32A, 15kW at 400V, 7.5kW at 230V

**URL:** https://aio.lv/en/product--siemens-3rw4027-1bb14--1778208
**Data updated:** 2026-05-18 02:52 (EEST)
**Category:** Control Systems
**Manufacturer:** Siemens
**Manufacturer code:** 3RW4027-1BB14
**EAN:** 4011209691728
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 623.49 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 515.28 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rw4027-1bb14--1778208

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

The Siemens 3RW4027 soft starter is designed for the smooth starting and stopping of three-phase asynchronous motors. It features a rated current of 32A and supports motor power outputs of 15kW at 400V and 7.5kW at 230V. This compact device reduces mechanical stress and current peaks during motor startup, extending the service life of industrial equipment and protecting the electrical grid from high inrush currents.

## Long description

The Siemens 3RW4027 soft starter is a high-performance solution engineered for the controlled acceleration and deceleration of three-phase asynchronous motors. By managing the voltage supplied to the motor, this device ensures a smooth transition during startup, effectively eliminating the mechanical shocks and high electrical surges typically associated with direct-on-line starting methods. Its compact design and robust construction make it an essential component for industrial automation systems requiring reliable motor control and protection.
Advantages
This soft starter significantly reduces the mechanical stress placed on drive components such as belts, gears, and couplings, which helps to minimize wear and tear over time. By limiting the inrush current, it also prevents voltage dips in the power supply network, protecting sensitive equipment connected to the same grid. The integrated electronic motor overload protection ensures that the motor remains safe from thermal damage, while the compact size allows for efficient use of space within control cabinets.
Suitable for
Conveyor belt systems
Pumps and hydraulic systems
Fans and ventilation units
Compressors
Industrial machinery with high inertia loads
When it may not be suitable
This device is not intended for applications requiring frequent start-stop cycles at high intensity, as it may lead to thermal saturation. It is also not suitable for controlling single-phase motors or applications where precise speed control is required throughout the entire operation, as it is strictly a soft starter and not a variable frequency drive.
Key specifications
Rated operational current: 32A
Motor power at 400V: 15kW
Motor power at 230V: 7.5kW
Control supply voltage: 110-230V AC/DC
Operational voltage range: 200-480V AC
Integrated electronic overload protection
Compact S0 size design
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 a control cabinet. After ensuring the power supply is disconnected, connect the main power lines 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 function. Once installed, the device can be configured using the integrated potentiometers to adjust the starting voltage and ramp-up time according to the specific load requirements.
What to consider before purchase
Verify that the motor rated current does not exceed 32A.
Ensure the control voltage matches your existing control circuit (110-230V AC/DC).
Check the available space in the control cabinet for the S0 frame size.
Confirm the application does not require variable speed control.
Usage recommendations: Always ensure proper ventilation within the control cabinet to prevent overheating during operation. Regularly inspect the terminal connections for tightness to maintain optimal electrical contact and prevent potential faults.

## FAQ

### How much does the Siemens 3RW4027 Soft Starter 32A 15kW cost, and is it available for purchase?

The price is 623.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 14.07.2026 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 3RW4027 Soft Starter 32A 15kW 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/1778208/52459140_large.webp