# Siemens 3RH2911-1HA22 Auxiliary Switch Block, 2NO + 2NC, Front Mount

**URL:** https://aio.lv/en/product--siemens-3rh2911-1ha22--1796238
**Data updated:** 2026-05-18 02:39 (EEST)
**Category:** Printer & Copier Parts
**Manufacturer:** Siemens
**Manufacturer code:** 3RH2911-1HA22
**EAN:** 4011209829312
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 46.49 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 38.42 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rh2911-1ha22--1796238

## 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 | 19.71 EUR |

## Summary description

The Siemens 3RH2911-1HA22 is a high-quality auxiliary switch block designed for reliable switching operations. Featuring a 2NO + 2NC contact configuration, this unit is intended for front mounting on SIRIUS contactors sizes S00 and S0. It provides essential feedback and control signaling in industrial automation and electrical distribution systems, ensuring robust performance and seamless integration into existing control circuits.

## Long description

The Siemens 3RH2911-1HA22 auxiliary switch block is a precision-engineered component designed to enhance the functionality of SIRIUS contactors. This unit provides reliable switching operations by adding extra contact points to your existing control system. With a configuration of 2 normally open (NO) and 2 normally closed (NC) contacts, it serves as a critical interface for feedback and signaling in various industrial automation environments.
Advantages
This auxiliary switch block offers seamless integration with SIRIUS contactors in sizes S00 and S0, ensuring a perfect mechanical and electrical fit. The front-mounting design allows for quick and efficient installation without the need for complex tools or extensive downtime. Its robust construction guarantees long-term durability and consistent performance even in demanding industrial conditions, providing accurate status monitoring for your electrical circuits.
Suitable for
Industrial automation control panels
Electrical distribution systems
Feedback signaling for contactor status
Integration with SIRIUS S00 and S0 contactors
When it may not be suitable
This switch block is specifically designed for use with Siemens SIRIUS contactors of sizes S00 and S0. It is not compatible with contactors of different sizes or those from other manufacturers. Furthermore, it should not be used in applications exceeding its specified electrical ratings or in environments with extreme environmental conditions not covered by its technical specifications.
Key specifications
Contact configuration: 2NO + 2NC
Mounting type: Front mount
Compatibility: SIRIUS contactors sizes S00 and S0
Function: Auxiliary switching and signaling
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. Press the unit firmly until it clicks into place, ensuring that the mechanical connection is secure. Once mounted, connect the necessary control wiring to the terminals according to your circuit diagram. Verify the connections before restoring power to the system.
What to consider before purchase
Verify the size of your existing SIRIUS contactor (S00 or S0).
Ensure the 2NO + 2NC contact configuration meets your control circuit requirements.
Confirm that the front-mounting space is available in your control cabinet.
Usage recommendations
Always perform a functional test of the auxiliary contacts after installation to ensure they correctly reflect the state of the main contactor before putting the system into full operation.

## FAQ

### How much does the Siemens 3RH2911-1HA22 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 — 180 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. 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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