# Siemens SIRIUS 3RT2017-1BB42 Power Contactor, 3-Pole, 12A, 24V DC, 1NC Auxiliary Contact

**URL:** https://aio.lv/en/product--siemens-3rt2017-1bb42--1796325
**Data updated:** 2026-05-18 02:39 (EEST)
**Category:** Control Systems
**Manufacturer:** Siemens
**Manufacturer code:** 3RT2017-1BB42
**EAN:** 4011209785007
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 51.99 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 42.97 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rt2017-1bb42--1796325

## 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 SIRIUS 3RT2017-1BB42 is a high-performance 3-pole power contactor designed for reliable industrial switching applications. It features a 12A operational current and a 24V DC control supply voltage. Equipped with one normally closed (NC) auxiliary contact, this S00 size contactor ensures efficient motor control and circuit protection in various automation systems, offering durability and seamless integration into electrical panels.

## Long description

The Siemens SIRIUS 3RT2017-1BB42 is a robust 3-pole power contactor engineered for demanding industrial switching environments. This S00 size device is designed to handle an operational current of 12A and operates with a 24V DC control supply voltage. It features a compact design that allows for efficient space utilization within electrical control panels, providing reliable performance for motor control and power distribution tasks in various automation systems.
Advantages
This contactor offers exceptional reliability and longevity due to its high-quality construction and advanced engineering. The SIRIUS series is known for its seamless integration capabilities, allowing for quick installation and reduced downtime during maintenance. Its compact S00 frame size makes it an ideal choice for applications where panel space is limited, while the inclusion of a normally closed auxiliary contact provides essential feedback for monitoring and safety interlocks in complex control circuits.
Suitable for
Industrial motor control systems
Automation and process control panels
Switching resistive and inductive loads
Safety-critical circuit monitoring applications
When it may not be suitable
This contactor is not intended for high-voltage applications exceeding its rated operational capacity. It is also not suitable for environments requiring AC control voltages, as this specific model is designed exclusively for 24V DC operation.
Key specifications
Number of poles: 3
Operational current: 12A
Control supply voltage: 24V DC
Auxiliary contacts: 1 normally closed (NC)
Size: S00
How to use
The contactor should be mounted on a standard DIN rail or via screw mounting within an electrical enclosure. Ensure that the control circuit is connected to the A1 and A2 terminals using 24V DC power. The main power lines should be connected to the primary terminals, and the auxiliary contact can be wired into the control logic to provide status feedback or interlock functionality. Always verify that the electrical load does not exceed the rated 12A capacity before energizing the system.
What to consider before purchase
Verify that your control system provides a 24V DC supply.
Ensure the 12A current rating is sufficient for your specific motor or load requirements.
Check available space in your electrical panel for the S00 size footprint.
Confirm the need for a normally closed auxiliary contact in your circuit design.
Usage recommendations
Always ensure that the power supply is disconnected before performing any wiring or maintenance on the contactor to prevent electrical shock and equipment damage.

## FAQ

### How much does the Siemens SIRIUS 3RT2017-1BB42 Power Contactor cost, and is it available for purchase?

The price is 51.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 26 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. All transactions are 100% secure and encrypted.

### 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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