# Siemens 3RV2901-1E Auxiliary Switch for Circuit Breakers, 1NO + 1NC, Top Mounted

**URL:** https://aio.lv/en/product--siemens-3rv2901-1e--1796124
**Data updated:** 2026-05-18 02:39 (EEST)
**Category:** Miscellaneous repair tools
**Manufacturer:** Siemens
**Manufacturer code:** 3RV2901-1E
**EAN:** 4011209790964
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 21.99 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 18.17 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rv2901-1e--1796124

## 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 | 7.80 EUR |

## Summary description

The Siemens 3RV2901-1E is a top-mounted auxiliary switch designed for SIRIUS circuit breakers in sizes S00 and S0. Featuring 1 normally open (NO) and 1 normally closed (NC) contact, this accessory provides reliable status signaling for industrial electrical systems. It is engineered for seamless integration, ensuring precise control and monitoring capabilities in various automation and power distribution applications.

## Long description

The Siemens 3RV2901-1E is a high-quality top-mounted auxiliary switch specifically engineered for integration with SIRIUS circuit breakers in sizes S00 and S0. This essential component provides reliable status feedback by utilizing one normally open (NO) and one normally closed (NC) contact, allowing for efficient monitoring of circuit breaker positions within industrial electrical installations. Its compact design ensures it fits seamlessly into existing control panels without requiring significant additional space.
Advantages
This auxiliary switch offers exceptional reliability and precision in signaling the operational state of circuit breakers. By providing both NO and NC contacts, it enables versatile integration into various control circuits, enhancing the safety and monitoring capabilities of power distribution systems. The top-mounted design facilitates quick and easy installation, reducing downtime during maintenance or system upgrades. Its robust construction ensures long-term performance even in demanding industrial environments.
Suitable for
Industrial automation systems
Power distribution panels
Motor control centers
Status monitoring of circuit breakers
This device is not suitable for applications involving circuit breakers outside of the specified S00 and S0 size ranges. It is also not intended for use in high-voltage power transmission lines or environments that exceed the specified electrical ratings for auxiliary signaling contacts.
Key specifications
Contact configuration: 1 NO + 1 NC
Mounting type: Top-mounted
Compatibility: SIRIUS circuit breakers sizes S00 and S0
Color: Blue
Installation involves snapping the auxiliary switch onto the top of the compatible circuit breaker. Ensure the power is disconnected before attempting to mount or wire the device. Once physically attached, connect the signaling wires to the designated terminals according to your control circuit diagram to enable status monitoring.
What to consider before purchase
Verify the size of your existing SIRIUS circuit breaker (S00 or S0).
Ensure the contact configuration (1NO + 1NC) meets your control system requirements.
Confirm that the installation space allows for top-mounted accessories.
For optimal performance and safety, always ensure that the auxiliary switch is firmly seated on the circuit breaker and that all electrical connections are tightened to the manufacturer's specified torque settings. Regular inspection of the signaling contacts is recommended to maintain system reliability.

## Specifications

### Features

| Feature | Value |
|---|---|
| Product colour | Blue |

## FAQ

### How much does the Siemens 3RV2901-1E Auxiliary Switch for Circuit Breakers cost, and is it available for purchase?

The price is 21.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 398 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for Siemens 3RV2901-1E Auxiliary Switch for Circuit Breakers?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/1796124/58085560_large.webp