# Siemens 3RW3018 Soft Starter, 7.5 kW at 400V, 4 kW at 230V, 17.6 A Rated Current

**URL:** https://aio.lv/en/product--siemens-3rw3018-1bb14--1778399
**Data updated:** 2026-05-18 02:40 (EEST)
**Category:** Control Systems
**Manufacturer:** Siemens
**Manufacturer code:** 3RW3018-1BB14
**EAN:** 4011209719668
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 313.99 €
**Prices and availability valid until:** 2026-07-29 23:59
**Price without VAT (21%):** 259.50 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rw3018-1bb14--1778399

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

The Siemens 3RW3018 soft starter is designed for the smooth starting and stopping of three-phase asynchronous motors. It supports a motor power of 7.5 kW at 400V and 4 kW at 230V with a rated operational current of 17.6 A. This compact device reduces mechanical stress on the drive system and minimizes current peaks during startup, ensuring reliable operation in industrial applications.

## Long description

The Siemens 3RW3018 soft starter is a high-performance control device engineered for the controlled starting and stopping of three-phase asynchronous motors. By regulating the voltage supplied to the motor, this unit ensures a gradual acceleration, which effectively prevents mechanical shocks and electrical surges that are common during direct-on-line starting. Its compact design makes it an ideal solution for space-constrained industrial control cabinets, providing a reliable method to extend the service life of motors and connected mechanical components like belts, gears, and couplings.
Advantages
The primary benefit of using this soft starter is the significant reduction of mechanical stress on the entire drive train, which leads to lower maintenance requirements and fewer equipment failures. By minimizing current peaks during the startup phase, the device helps maintain the stability of the power supply network and prevents voltage drops that could affect other sensitive equipment. The unit is designed for efficiency and ease of integration, offering a robust solution that balances performance with operational longevity in demanding industrial environments.
Suitable for
Conveyor belt systems
Pumps and hydraulic systems
Fans and ventilation units
Compressors
Small industrial machinery
When it may not be suitable
This soft starter is not intended for applications requiring high starting torque, as it reduces voltage to achieve a smooth start. It is also not suitable for frequent switching operations or heavy-duty starting cycles that exceed the thermal capacity of the device.
Key specifications
Rated operational power: 7.5 kW at 400V, 4 kW at 230V
Rated operational current: 17.6 A
Control supply voltage: 110-230V AC/DC
Device size: S00
Compatibility: Three-phase asynchronous motors
How to use
Installation should be performed by qualified personnel in accordance with local electrical regulations. The soft starter is mounted on a standard DIN rail within a control cabinet. After physical installation, connect the power supply lines to the input terminals and the motor leads to the output terminals. Ensure the control voltage is correctly wired to the designated terminals. Once powered, the device manages the ramp-up process automatically based on its internal settings, providing a smooth transition to full operational speed.
What to consider before purchase
Verify that the motor power and current ratings match the device specifications.
Ensure the control voltage matches your existing control circuit.
Check the available space in your control cabinet for proper ventilation.
Confirm the application does not require high starting torque.
Usage recommendations
Always ensure proper ventilation around the soft starter to prevent overheating during operation. Regularly inspect electrical connections for tightness to maintain optimal performance and safety.

## FAQ

### How much does the Siemens 3RW3018 Soft Starter cost, and is it available for purchase?

The price is 313.99 € (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 16.07.2026 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 3RW3018 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/1778399/52354738_large.webp