# Siemens 3RV2021-1FA10 Motor Circuit Breaker, Size S0, 3.5-5A, Class 10

**URL:** https://aio.lv/en/product--siemens-3rv20211fa10--3420807
**Data updated:** 2026-05-18 02:49 (EEST)
**Category:** Control Systems
**Manufacturer:** Siemens
**Manufacturer code:** 3RV20211FA10
**EAN:** 4011209902879
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 67.99 €
**Prices and availability valid until:** 2026-07-24 23:59
**Price without VAT (21%):** 56.19 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rv20211fa10--3420807

## 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 | 4.99 EUR |

## Summary description

The Siemens 3RV2021-1FA10 is a high-performance motor circuit breaker designed for reliable protection of electrical motors. Featuring a size S0 design and a thermal overload release range of 3.5-5A, this Class 10 device ensures efficient switching and protection against short circuits and overloads. It is an essential component for industrial automation and motor control applications, providing robust performance and safety in various electrical systems.

## Long description

The Siemens 3RV2021-1FA10 is a high-performance motor circuit breaker engineered for the reliable protection of electrical motors in industrial environments. Built with a compact size S0 design, this device offers a thermal overload release range of 3.5-5A and operates as a Class 10 unit, ensuring precise response times during electrical faults. It serves as a critical component for maintaining the integrity of motor control systems by providing effective protection against short circuits and thermal overloads.
Advantages
This motor circuit breaker stands out due to its robust construction and high operational reliability. The S0 size allows for space-efficient installation within control cabinets, while the integrated thermal overload release provides consistent monitoring of motor currents. Its Class 10 tripping characteristic ensures that the device reacts appropriately to overload conditions, preventing potential damage to connected equipment and minimizing downtime in automated processes.
Suitable for
Industrial automation systems
Motor control centers
Pump and fan control applications
Conveyor belt motor protection
General electrical distribution systems
When it may not be suitable
This device is not intended for applications requiring current ranges outside of the 3.5-5A specification. It is also not suitable for environments that exceed the specified environmental operating conditions or for use in circuits where higher tripping classes are required for specific motor starting characteristics.
Key specifications
Size: S0
Current range: 3.5-5A
Tripping class: Class 10
Function: Short-circuit and overload protection
How to use
The device should be mounted on a standard DIN rail or via screw mounting within a control panel. Ensure that the motor current is within the 3.5-5A range before setting the dial to the specific full-load current of the motor. Wiring should be performed by qualified personnel according to local electrical codes, ensuring all connections are tightened to the specified torque to prevent overheating.
What to consider before purchase
Verify the full-load current of your motor matches the 3.5-5A range
Ensure the S0 size fits your existing control panel layout
Check compatibility with your specific motor starter configuration
Usage recommendations
Regularly inspect the device for signs of wear or thermal stress and perform periodic testing of the trip mechanism to ensure continued operational safety and reliability in your electrical system.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.357 kg |
| Product colour | Multicolour |

## FAQ

### How much does the Siemens 3RV2021-1FA10 Motor Circuit Breaker cost, and is it available for purchase?

The price is 67.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 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

## Image

https://aio.lv/img/cache/product/3420807/47529316_large.webp