# Siemens 3RH2911-1GA31 Auxiliary Switch Block, 3NO + 1NC, Front Mounting

**URL:** https://aio.lv/en/product--siemens-3rh29111ga31--1840698
**Data updated:** 2026-05-18 02:47 (EEST)
**Category:** Printer & Copier Parts
**Manufacturer:** Siemens
**Manufacturer code:** 3RH29111GA31
**EAN:** 4011209829442
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 48.99 €
**Prices and availability valid until:** 2026-08-10 23:59
**Price without VAT (21%):** 40.49 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rh29111ga31--1840698

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.07.2026 | free |
| Pickup points | 04.08.2026 | 1.89 EUR |
| Courier delivery to door | 04.08.2026 | 21.11 EUR |

## Summary description

The Siemens 3RH2911-1GA31 auxiliary switch block is designed for reliable switching operations in industrial control systems. Featuring a 3NO + 1NC contact configuration, this front-mounted unit is compatible with Sirius contactors. It ensures precise signal transmission and operational safety in electrical circuits, making it an essential component for automation and power management applications.

## Long description

The Siemens 3RH2911-1GA31 auxiliary switch block is a high-quality electrical component engineered for integration with Sirius contactors. This device provides reliable switching capabilities within industrial control systems, ensuring precise signal transmission and enhanced operational safety. Designed for front mounting, it allows for efficient space utilization and straightforward installation in various automation and power management setups.
Advantages
This auxiliary switch block offers exceptional reliability and durability, meeting the rigorous demands of industrial environments. Its design facilitates seamless compatibility with standard contactors, ensuring that electrical circuits operate with high precision. The robust construction supports consistent performance over long periods, reducing the need for frequent maintenance and contributing to the overall stability of control systems.
Suitable for
Industrial automation control systems
Power management and distribution panels
Signal transmission in electrical circuits
Integration with Sirius contactors
When it may not be suitable
This component is specifically designed for use with compatible Siemens Sirius contactors and may not be suitable for integration with contactors from other manufacturers or different series. It is not intended for high-power switching applications that exceed the specified contact ratings.
Key specifications
Contact configuration: 3 Normally Open (NO) + 1 Normally Closed (NC)
Mounting type: Front mounting
Compatibility: Siemens Sirius contactors
Application: Industrial control and automation
How to use
To install the auxiliary switch block, ensure that the power supply to the contactor is completely disconnected. Align the switch block with the front mounting interface of the compatible Sirius contactor and press firmly until it clicks into place. Once secured, verify that the mechanical connection is stable before reconnecting the power. Ensure that all wiring to the terminals is performed according to the electrical diagram of your specific control system.
What to consider before purchase
Verify compatibility with your existing contactor model
Ensure the 3NO + 1NC contact configuration meets your circuit requirements
Confirm that front mounting space is available in your control cabinet
Usage recommendations
Regularly inspect the terminal connections for tightness and ensure the device is free from dust or debris to maintain optimal electrical contact and system reliability.

## FAQ

### How much does the Siemens 3RH2911-1GA31 Auxiliary Switch Block cost, and is it available for purchase?

The price is 48.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 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 30.07.2026 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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