# Siemens 3RV2021-4FA10 Motor Circuit Breaker, 34-40A, Class 10, 3-Pole, Size S0

**URL:** https://aio.lv/en/product--siemens-3rv20214fa10--1789243
**Data updated:** 2026-05-18 02:40 (EEST)
**Category:** Power Sockets
**Manufacturer:** Siemens
**Manufacturer code:** 3RV20214FA10
**EAN:** 4011209716278
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 126.49 €
**Prices and availability valid until:** 2026-08-24 23:59
**Price without VAT (21%):** 104.54 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rv20214fa10--1789243

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.08.2026 | free |
| Pickup points | 13.08.2026 | 1.79 EUR |
| Courier delivery to door | 13.08.2026 | 4.99 EUR |

## Summary description

The Siemens 3RV2021-4FA10 is a high-performance motor circuit breaker designed for reliable protection of electric motors. Featuring a current range of 34-40A and Class 10 trip characteristics, this 3-pole device in size S0 provides effective overload and short-circuit protection. It is suitable for industrial applications requiring precise motor control and safety, ensuring long-term operational stability and equipment longevity.

## Long description

The Siemens 3RV2021-4FA10 is a robust motor circuit breaker engineered to provide dependable protection for electric motors in demanding industrial environments. This 3-pole device, built in the compact S0 size, is specifically designed to handle current ranges between 34 and 40A. By integrating advanced thermal and magnetic release mechanisms, it effectively safeguards equipment against overloads and short-circuit faults, contributing to the overall reliability and longevity of electrical systems.
Advantages
This motor circuit breaker offers high operational reliability through its precise Class 10 trip characteristics, which ensure rapid response times during fault conditions. Its compact S0 design allows for efficient use of space within control cabinets, while the high-quality construction ensures consistent performance under continuous duty cycles. The device is built to withstand harsh industrial conditions, providing a stable and secure solution for motor management and protection.
Suitable for
Industrial motor control centers
Protection of three-phase induction motors
Automation systems requiring reliable circuit interruption
Applications where space-saving components are essential
When it may not be suitable
This device is not intended for use in circuits exceeding its specified current range of 34-40A or for applications requiring different trip classes. It is also not suitable for environments that exceed the environmental protection ratings specified by the manufacturer.
Key specifications
Current range: 34-40A
Trip class: Class 10
Number of poles: 3
Size: S0
Function: Overload and short-circuit protection
How to use
The device should be installed by a qualified professional within a suitable electrical enclosure. It is mounted onto a standard DIN rail. Once installed, the current setting should be adjusted to match the nominal current of the motor being protected. The breaker can be manually operated using the front-facing toggle switch to start or stop the motor or to reset the device after a trip event.
What to consider before purchase
Verify that the motor's nominal current falls within the 34-40A range
Ensure the mounting space is compatible with the S0 frame size
Confirm that the electrical system requirements align with Class 10 trip characteristics
Usage recommendations
Regularly inspect the device for signs of wear and ensure that all terminal connections remain tight to prevent overheating. Always perform a functional test after installation to verify that the trip mechanism operates correctly under simulated fault conditions.

## FAQ

### How much does the Siemens 3RV2021-4FA10 Motor Circuit Breaker 34-40A cost, and is it available for purchase?

The price is 126.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 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 10.08.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can Siemens 3RV2021-4FA10 Motor Circuit Breaker 34-40A be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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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