# Siemens 3RH2911-1FA40 Auxiliary Switch Block, 4 NO Contacts, Front Mounting

**URL:** https://aio.lv/en/product--siemens-3rh2911-1fa40--1796212
**Data updated:** 2026-05-18 02:39 (EEST)
**Category:** Printer & Copier Parts
**Manufacturer:** Siemens
**Manufacturer code:** 3RH2911-1FA40
**EAN:** 4011209829398
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 46.49 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 38.42 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rh2911-1fa40--1796212

## 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 | 19.71 EUR |

## Summary description

The Siemens 3RH2911-1FA40 is a high-quality auxiliary switch block designed for integration with SIRIUS contactors. This unit features 4 normally open (NO) contacts and is intended for front-side mounting. It provides reliable switching performance for industrial control circuits, ensuring seamless compatibility and easy installation in various automation and electrical distribution systems.

## Long description

The Siemens 3RH2911-1FA40 auxiliary switch block is a precision-engineered component designed to expand the functionality of SIRIUS contactors. Featuring 4 normally open (NO) contacts, this block allows for reliable signal transmission and control within industrial automation systems. Its design is optimized for front-side mounting, facilitating quick and efficient integration into existing electrical panels and control cabinets.
Advantages
This auxiliary switch block offers exceptional reliability and durability, meeting the rigorous standards required for industrial environments. The front-mounting configuration simplifies the installation process, allowing technicians to add switching capacity to contactors without requiring significant space or complex wiring modifications. Its robust construction ensures consistent performance and long-term operational stability in demanding electrical distribution systems.
Suitable for
Industrial automation and control systems
Expansion of SIRIUS contactor functionality
Signal monitoring and feedback loops
Electrical distribution and switching applications
When it may not be suitable
This switch block is specifically designed for use with compatible SIRIUS contactors and may not be suitable for integration with contactors from other manufacturers or different series. It is not intended for high-power load switching, as it is strictly an auxiliary control device.
Key specifications
4 normally open (NO) contacts
Front-side mounting design
Compatible with SIRIUS contactor series
Industrial-grade switching performance
How to use
To install the auxiliary switch block, ensure that the power supply to the contactor is disconnected. Align the block with the front mounting interface of the compatible SIRIUS contactor and press it firmly until it clicks into place. Once secured, connect the control circuit wiring to the designated terminals according to your electrical schematic. Verify that all connections are tight and that the mechanical operation is smooth before restoring power to the system.
What to consider before purchase
Verify compatibility with your specific SIRIUS contactor model
Ensure the 4 NO contact configuration meets your control circuit requirements
Confirm that front-side mounting space is available in your enclosure
Usage recommendations
Always perform a functional test of the auxiliary contacts after installation to ensure proper signal transmission. Regularly inspect terminal connections for tightness to prevent signal loss due to vibration or thermal expansion.

## FAQ

### How much does the Siemens 3RH2911-1FA40 Auxiliary Switch Block cost, and is it available for purchase?

The price is 46.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 41 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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