# Siemens 3RV2901-2E Auxiliary Switch, 1NO+1NC, Lateral Mounting for Motor Circuit Breakers

**URL:** https://aio.lv/en/product--siemens-3rv29012e--1840583
**Data updated:** 2026-05-18 02:47 (EEST)
**Category:** Computer Component Accessories
**Manufacturer:** Siemens
**Manufacturer code:** 3RV29012E
**EAN:** 4011209790933
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 32.99 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 27.26 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rv29012e--1840583

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.99 EUR |
| Courier delivery to door | 14.07.2026 | 13.39 EUR |

## Summary description

The Siemens 3RV2901-2E is a lateral-mounted auxiliary switch designed for use with SIRIUS motor circuit breakers. It features a configuration of 1 normally open (NO) and 1 normally closed (NC) contact. This component provides reliable status signaling for industrial control systems, ensuring precise monitoring and integration of motor protection devices in electrical panels.

## Long description

The Siemens 3RV2901-2E auxiliary switch is a precision-engineered component designed for lateral mounting on SIRIUS motor circuit breakers. This device provides essential status feedback by indicating the switching state of the main circuit breaker, which is critical for the reliable operation of industrial control systems. With a configuration of one normally open (NO) and one normally closed (NC) contact, it ensures seamless integration into electrical panels for monitoring and control purposes.
Advantages
This auxiliary switch offers high operational reliability and is specifically designed to integrate perfectly with the SIRIUS modular system. Its lateral mounting design saves space within the control cabinet, allowing for a compact installation without compromising the functionality of the motor circuit breaker. The robust construction ensures long-term performance in demanding industrial environments, providing accurate signaling that helps prevent downtime and enhances system diagnostics.
Suitable for
Industrial motor control centers
Electrical distribution panels
Automation systems requiring status feedback
Motor protection applications
This device may not be suitable for applications requiring high-power switching, as it is designed strictly for control circuit signaling. It is also not intended for use with circuit breakers outside the compatible SIRIUS series, as mechanical and electrical compatibility is specific to this product line.
Key specifications
Contact configuration: 1 NO (Normally Open) + 1 NC (Normally Closed)
Mounting type: Lateral
Compatibility: SIRIUS motor circuit breakers
Function: Status signaling
To install the auxiliary switch, ensure the motor circuit breaker is disconnected from the power supply. The switch is designed to be snapped onto the side of the breaker housing. Once physically attached, connect the control wires to the terminal points according to the wiring diagram of your control system. Verify that the mechanical linkage is correctly engaged before restoring power to the circuit.
What to consider before purchase
Verify compatibility with your specific SIRIUS motor circuit breaker model
Ensure there is sufficient lateral space in your electrical panel for the mounting
Confirm that the control voltage and current requirements match your system specifications
For optimal performance and safety, always ensure that the auxiliary switch is installed by qualified personnel and that all connections are tightened to the manufacturer's specified torque settings. Regular inspection of the control circuit is recommended to maintain system integrity.

## FAQ

### How much does the Siemens 3RV2901-2E Auxiliary Switch for Motor Circuit Breakers cost, and is it available for purchase?

The price is 32.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 45 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 09.07.2026 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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