# Siemens SIRIUS 3RT2026-1BB40 Power Contactor, 3-Pole, 25A, 24V DC, 1NO + 1NC, Size S0

**URL:** https://aio.lv/en/product--siemens-3rt2026-1bb40--1796298
**Data updated:** 2026-05-18 02:39 (EEST)
**Category:** Control Systems
**Manufacturer:** Siemens
**Manufacturer code:** 3RT2026-1BB40
**EAN:** 4011209790131
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 91.49 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 75.61 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rt2026-1bb40--1796298

## 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 SIRIUS 3RT2026-1BB40 is a high-performance 3-pole power contactor designed for reliable industrial switching applications. It features a 25A rated operational current and a 24V DC control supply voltage. Equipped with 1NO and 1NC auxiliary contacts, this size S0 device ensures efficient motor control and circuit protection. Its robust design makes it ideal for demanding electrical installations requiring consistent performance and long service life.

## Long description

The Siemens SIRIUS 3RT2026-1BB40 is a high-performance 3-pole power contactor engineered for reliable industrial switching and motor control. Designed for demanding electrical environments, this size S0 device offers a rated operational current of 25A and operates with a 24V DC control supply voltage. It is built to provide consistent performance, ensuring the longevity and safety of your electrical circuits in various industrial applications.
Advantages
This power contactor stands out due to its robust construction and high operational reliability. The integration of 1NO and 1NC auxiliary contacts provides enhanced flexibility for control and monitoring circuits. Its compact size S0 design allows for efficient space utilization within control cabinets, while the standardized interface ensures seamless integration into existing automation systems. The device is optimized for high switching frequency and long mechanical service life, reducing maintenance requirements in heavy-duty environments.
Suitable for
Industrial motor control systems
Switching resistive and inductive loads
Automation and control panels
Heating and lighting control circuits
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 the specified thermal or electrical ratings, or in hazardous areas where specialized explosion-proof equipment is mandatory.
Key specifications
Number of poles: 3
Rated operational current: 25A
Control supply voltage: 24V DC
Auxiliary contacts: 1 Normally Open (NO) and 1 Normally Closed (NC)
Size: S0
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 enclosure. Ensure that the control circuit is connected to the A1 and A2 terminals with the correct 24V DC polarity. Power cables should be securely fastened to the main terminals, ensuring proper torque settings to prevent overheating. Always verify that the load current does not exceed the rated 25A capacity before energizing the system.
What to consider before purchase
Verify that your control system provides a stable 24V DC supply.
Ensure the 25A current rating matches your motor or load requirements.
Check available space in your control cabinet for size S0 components.
Confirm the auxiliary contact configuration meets your feedback or interlocking needs.
Usage recommendations
Regularly inspect terminal connections for tightness and check for signs of wear or overheating during scheduled maintenance intervals to ensure optimal performance and safety.

## FAQ

### How much does the Siemens SIRIUS 3RT2026-1BB40 Power Contactor cost, and is it available for purchase?

The price is 91.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 64 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 SIRIUS 3RT2026-1BB40 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/1796298/47495524_large.webp