# Siemens SIRIUS 3RT2018-1BB42 Power Contactor, 3-Pole, 24V DC, 16A

**URL:** https://aio.lv/en/product--siemens-3rt2018-1bb42--1796626
**Data updated:** 2026-05-18 02:44 (EEST)
**Category:** Control Systems
**Manufacturer:** Siemens
**Manufacturer code:** 3RT2018-1BB42
**EAN:** 4011209785052
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 89.99 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 74.37 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rt2018-1bb42--1796626

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.07.2026 | free |
| Pickup points | 15.07.2026 | 1.99 EUR |
| Courier delivery to door | 15.07.2026 | 4.99 EUR |

## Summary description

The Siemens SIRIUS 3RT2018-1BB42 is a high-performance 3-pole power contactor designed for reliable industrial switching applications. It features a 24V DC control voltage and a rated operational current of 16A. This robust contactor is ideal for controlling motors and electrical systems, offering long-term durability and efficient performance in demanding environments. It is a standard component for automation and power distribution panels.

## Long description

The Siemens SIRIUS 3RT2018-1BB42 is a high-performance 3-pole power contactor engineered for reliable switching in industrial environments. This compact device is designed to handle demanding electrical loads with precision, ensuring consistent operation in automation systems and power distribution panels. Built with industrial-grade materials, it provides long-term durability and efficient performance for various motor control applications.
Advantages
This contactor offers exceptional reliability due to its robust construction and high-quality internal components. Its compact S00 size allows for space-saving installation in crowded control cabinets, while the 24V DC control voltage ensures compatibility with standard industrial automation systems. The device is designed for high switching frequency and long mechanical service life, minimizing maintenance requirements and downtime in critical infrastructure.
Suitable for
Industrial motor control systems
Automation and control panels
Power distribution applications
Switching resistive and inductive loads
When it may not be suitable
This contactor is not intended for applications requiring AC control voltages, as it is specifically designed for 24V DC operation. It may also be unsuitable for environments exceeding its rated operational current or those requiring specialized environmental protection ratings not specified for this standard industrial model.
Key specifications
Number of poles: 3
Control voltage: 24V DC
Rated operational current: 16A
Size: S00
Configuration: 1 normally closed auxiliary contact
How to use
Installation should be performed by qualified personnel in accordance with local electrical regulations. The contactor is designed for mounting on standard DIN rails or via screw mounting within an electrical enclosure. Ensure that the control circuit is connected to the 24V DC terminals and that the main power lines are securely fastened to the load terminals. Verify that the voltage and current ratings match your specific application requirements before energizing the system.
What to consider before purchase
Verify that your control system provides a 24V DC signal.
Ensure the 16A current rating is sufficient for your motor or load.
Check available space in your control cabinet for S00 size components.
Confirm the auxiliary contact configuration meets your feedback requirements.
Usage recommendations
Regularly inspect the terminal connections for tightness and ensure the contactor remains free of dust and moisture to maintain optimal performance over its service life.

## FAQ

### How much does the Siemens SIRIUS 3RT2018-1BB42 Power Contactor cost, and is it available for purchase?

The price is 89.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 28 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 10.07.2026 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 3RT2018-1BB42 Power Contactor 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/1796626/47507052_large.webp