# Siemens 3RH2911-1HA11 Auxiliary Contact Block, Front Mount, 1NO + 1NC

**URL:** https://aio.lv/en/product--siemens-3rh2911-1ha11--12455737
**Data updated:** 2026-05-18 09:33 (EEST)
**Category:** Printer & Copier Parts
**Manufacturer:** Siemens
**Manufacturer code:** 3RH2911-1HA11
**EAN:** 4044773377156
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 10.49 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 8.67 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rh2911-1ha11--12455737

## 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 3RH2911-1HA11 is a high-quality auxiliary contact block designed for front mounting on contactors. Featuring a 1NO (normally open) and 1NC (normally closed) configuration, this component is essential for control circuit signaling and automation tasks. Built for reliability in industrial environments, it ensures seamless integration with compatible contactor series for efficient electrical switching and monitoring.

## Long description

The Siemens 3RH2911-1HA11 auxiliary contact block is a precision-engineered component designed for seamless integration with compatible contactors. This front-mounted device provides reliable signaling and control circuit functionality, featuring a 1NO (normally open) and 1NC (normally closed) configuration. It is built to meet the rigorous demands of industrial automation, ensuring consistent electrical switching and monitoring performance in various control applications.
Advantages
This auxiliary contact block offers exceptional reliability and durability, making it an ideal choice for demanding industrial environments. Its front-mount design allows for quick and efficient installation, saving valuable time during panel assembly or maintenance. The robust construction ensures long-term operational stability, while the precise 1NO and 1NC configuration provides the necessary flexibility for complex control circuit logic and signaling requirements.
Suitable for
Industrial automation control circuits
Electrical switching and monitoring systems
Integration with compatible contactor series
Signal feedback in control panels
When it may not be suitable
This component is specifically designed for use with compatible Siemens contactors and may not be compatible with other brands or non-specified series. It is not intended for high-power load switching and should only be used within the rated electrical parameters for auxiliary control circuits.
Key specifications
Configuration: 1NO (normally open) + 1NC (normally closed)
Mounting type: Front mount
Application: Control circuit signaling
Compatibility: Designed for specific Siemens contactor series
How to use
To install the auxiliary contact block, ensure the power supply to the contactor is disconnected. Align the block with the front mounting interface of the compatible contactor and press firmly until it snaps into place. Once secured, connect the control wires to the designated terminals according to your circuit diagram. Verify that the mechanical connection is stable before restoring power to the system.
What to consider before purchase
Verify compatibility with your existing contactor model
Ensure the 1NO + 1NC configuration meets your control logic requirements
Check the available space on the front of the contactor for installation
Usage recommendations: Always perform a functional test of the control circuit after installation to ensure the auxiliary contacts operate correctly in response to the contactor state.

## Specifications

| Feature | Value |
|---|---|
| Material | Polyamide |
| Product colour | Black |
| Easy to install | Yes |
| Mounting type | Snap-on |
| Profile size | 10 x 13 |
| Product type | Cable entrance end fitting |
| Compliance certificates | CE, RoHS |

## FAQ

### How much does the Siemens 3RH2911-1HA11 Auxiliary Contact Block cost, and is it available for purchase?

The price is 10.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 103 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

https://aio.lv/img/cache/product/12455737/68775615_large.webp