# Siemens Power Contactor 3RT2023-1BB40 9A 3-pole 4kW 1NO 1NC 24V DC Size S0

**URL:** https://aio.lv/en/product--siemens-3rt2023-1bb40--12634486
**Data updated:** 2026-09-18 04:46 (EEST)
**Category:** Home & DIY Accessories
**Manufacturer:** Siemens
**Manufacturer code:** 3RT2023-1BB40
**EAN:** 4011209831346
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 94.99 €
**Prices and availability valid until:** 2026-11-27 23:59
**Price without VAT (21%):** 78.50 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rt2023-1bb40--12634486

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 11.11.2026 | free |
| Pickup points | 16.11.2026 | 1.99 EUR |
| Courier delivery to door | 16.11.2026 | 4.99 EUR |

## Summary description

Siemens power contactor model 3RT2023-1BB40 designed for industrial electrical control applications. This 3-pole AC-3 device supports a 4kW power rating at 9A operational current, featuring a 24V DC control supply voltage and auxiliary contacts 1NO and 1NC in size S0. Ideal for reliable switching of electric motors and power circuits.

## Long description

The Siemens Power Contactor is an advanced industrial electrical control device engineered for the reliable switching of electric motors and power circuits. As part of the modular SIRIUS system, this 3-pole AC-3 device offers high contact reliability and robust performance from a compact design size S0. It supports a 4kW power rating at 400V with a 9A operational current and features a 24V DC control supply voltage. Built with integrated auxiliary contacts including 1 NO and 1 NC, it reduces wiring complexity and integrates smoothly into various industrial automation setups.
Advantages
This power contactor features a climate-resistant design that is approved for worldwide use and is fully IE3 and IE4-ready. Its modular SIRIUS architecture allows seamless combination with other matched components, such as load feeders, auxiliary switches, and infeed systems, reducing overall wiring effort. Front-panel screw terminals simplify installation, while integrated auxiliary switches decrease the complexity of electrical designs. The unit is optimized for stable performance and high contact reliability across demanding industrial environments.
Suitable for
Switching and controlling electric motors in industrial applications
Integration into modular SIRIUS load feeders and automation systems
Applications requiring a 24V DC control supply voltage
Power circuit switching up to 4kW at 400V
When it may not be suitable
This device is not designed for residential or consumer electrical installations where industrial control components are unnecessary. It is also unsuitable for applications requiring alternating current control supply voltage, as this specific model operates exclusively on 24V DC.
Key specifications
3-pole power contactor configuration
Operational current: 9 A
Power rating: 4 kW at 400 V
Control supply voltage: 24 V DC
Auxiliary contacts: 1 NO and 1 NC
Size: S0
Connection type: Screw terminal
Height: 85 mm
How to use
Mount the power contactor securely onto a compatible mounting surface or within an industrial control panel. Connect the main power circuits and motor lines to the appropriate screw terminals, ensuring proper tightening to maintain a secure and vibration-resistant connection. Connect the 24V DC control supply to the designated coil terminals and wire the integrated auxiliary contacts into your control and signaling logic. Verify all connections against the technical specifications before energizing the system.
What to consider before purchase
Verify that the operational current and power rating match your motor or circuit requirements
Ensure a 24V DC control supply voltage is available in your control panel
Check that size S0 physical dimensions fit within your available enclosure space
Usage recommendations
Always ensure that electrical installation and maintenance are performed by qualified professionals in accordance with local safety regulations and standards. Regularly inspect screw terminals for tightness and check the device for any signs of environmental wear or contamination in industrial settings.

## Specifications

| Feature | Value |
|---|---|
| Minimum order quantity | 1 pc(s) |
| Battery included | No |
| Maximum order quantity | 1 pc(s) |
| Compliance certificates | RoHS, CE |
| Main circuit connection type | Screw connection |
| Number of auxiliary NC contacts | 1 |
| Number of auxiliary NO contacts | 1 |
| Actuating voltage type | DC |
| Rated operational power (AC-3, 400V) | 4 kW |
| Suitable for distribution boards | Yes |
| Operating voltage AC (50Hz) | 690 |
| Operating coltage AC (60Hz) | 690 |
| Number of NO main contacts | 3 |
| Rated operation current (Ie at AC-3, 400V) | 9 A |
| Rated operation current (Ie at AC-1, 400V) | 40 A |
| Rated operation power (NEMA) | 5 hp |
| Rated operation current (Ie at AC-4, 400V) | 8.5 A |

### Weight & dimensions

| Feature | Value |
|---|---|
| Package weight | 604 g |
| Height | 85 mm |
| Package depth | 92 mm |
| Package height | 115.5 mm |
| Package width | 54 mm |

## FAQ

### How much does the Siemens Power Contactor 3RT2023-1BB40 cost, and is it available for purchase?

The price is 94.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 22 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 11.11.2026 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 Power Contactor 3RT2023-1BB40 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

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