# Siemens 3RH2911-1DA11 Auxiliary Contact Block, 1 NO + 1 NC, Side-Mounted

**URL:** https://aio.lv/en/product--siemens-3rh29111da11--1842370
**Data updated:** 2026-05-18 02:48 (EEST)
**Category:** Computer Component Accessories
**Manufacturer:** Siemens
**Manufacturer code:** 3RH29111DA11
**EAN:** 4011209787094
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 38.49 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 31.81 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rh29111da11--1842370

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.99 EUR |
| Courier delivery to door | 16.07.2026 | 15.50 EUR |

## Summary description

The Siemens 3RH2911-1DA11 is a side-mounted auxiliary contact block designed for SIRIUS contactors. It features 1 normally open (NO) and 1 normally closed (NC) contact, providing reliable switching for control circuits. This modular component is essential for expanding the functionality of industrial automation systems, ensuring precise signal transmission and integration within electrical control panels.

## Long description

The Siemens 3RH2911-1DA11 is a high-quality side-mounted auxiliary contact block engineered for seamless integration with SIRIUS contactors. This modular component provides 1 normally open (NO) and 1 normally closed (NC) contact, serving as a critical interface for control circuits in industrial automation environments. Its robust design ensures reliable signal transmission and efficient operation within electrical control panels, making it an essential addition for expanding the switching capabilities of your existing contactor setup.
Advantages
This auxiliary contact block offers exceptional reliability and ease of installation due to its side-mounting configuration, which saves valuable space on the DIN rail. The modular design allows for quick and secure attachment to compatible contactors, ensuring a stable electrical connection. By providing both NO and NC contacts, it offers versatile switching options for complex control logic, enhancing the overall flexibility and performance of your industrial control systems.
Suitable for
Industrial automation control systems
Expansion of SIRIUS contactor functionality
Signal transmission in electrical control panels
Complex switching logic in motor control centers
When it may not be suitable
This component is specifically designed for use with compatible Siemens SIRIUS contactors and may not be compatible with contactors from other manufacturers or different product series. It is not intended for high-power main circuit switching and should be used exclusively for control circuit applications.
Key specifications
Contact configuration: 1 NO + 1 NC
Mounting type: Side-mounted
Compatibility: SIRIUS contactor series
Application: Control circuit switching
How to use
To install the auxiliary contact block, ensure that the power supply to the contactor is completely disconnected. Align the block with the side of the SIRIUS contactor and snap it into place according to the manufacturer's mechanical interface guidelines. Once securely attached, connect the control wires to the designated terminals, ensuring that all connections are tightened to the specified torque. Verify the wiring against your control schematic before restoring power to the system.
What to consider before purchase
Verify compatibility with your specific contactor model
Ensure sufficient physical space on the side of the contactor for mounting
Check the control voltage requirements of your system
Usage recommendations
Always perform a functional test of the auxiliary contacts after installation to ensure correct signal transmission and integration with your control logic. Regularly inspect terminal connections for tightness during scheduled maintenance.

## FAQ

### How much does the Siemens 3RH2911-1DA11 Auxiliary Contact Block cost, and is it available for purchase?

The price is 38.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 13.07.2026 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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