# Siemens 3RV2021-4BA15 Motor Circuit Breaker 14-20A 3-Pole Size S0

**URL:** https://aio.lv/en/product--siemens-3rv20214ba15--1803468
**Data updated:** 2026-05-18 02:44 (EEST)
**Category:** Power Sockets
**Manufacturer:** Siemens
**Manufacturer code:** 3RV20214BA15
**EAN:** 4011209841260
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 100.99 €
**Prices and availability valid until:** 2026-07-24 23:59
**Price without VAT (21%):** 83.46 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rv20214ba15--1803468

## 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 3RV2021-4BA15 is a high-performance motor circuit breaker designed for reliable protection of electric motors. Featuring a thermal-magnetic trip unit with an adjustable current range of 14-20A, this 3-pole device is built in the compact S0 size. It provides essential short-circuit and overload protection, ensuring safe operation in industrial and commercial electrical systems.

## Long description

The Siemens 3RV2021-4BA15 is a robust motor circuit breaker engineered to provide comprehensive protection for electric motors in industrial and commercial environments. This 3-pole device is designed for high-performance operation, featuring a thermal-magnetic trip unit that ensures reliable detection of both overloads and short circuits. Built in the compact S0 size, it integrates seamlessly into modern control cabinets, offering a space-saving solution without compromising on safety or functionality.
Advantages
This motor circuit breaker stands out due to its precise adjustable current range, which allows for accurate calibration to the specific requirements of the connected motor. The thermal-magnetic release mechanism provides a rapid response to electrical faults, effectively preventing damage to equipment and minimizing downtime. Its durable construction and high switching capacity make it a dependable choice for demanding electrical systems, ensuring long-term operational stability and enhanced safety for personnel and machinery.
Suitable for
Industrial motor control centers
Commercial HVAC systems
Conveyor belt drive protection
Pump and compressor motor management
General machinery automation
This device may not be suitable for applications requiring current ratings outside the 14-20A range or for environments with extreme environmental conditions that exceed the standard IP protection ratings of the housing. It is also not intended for use in high-voltage distribution networks beyond its specified operational limits.
Key specifications
Current setting range: 14-20A
Number of poles: 3
Size: S0
Trip unit type: Thermal-magnetic
Function: Overload and short-circuit protection
Installation should be performed by qualified personnel in accordance with local electrical regulations. The device is typically mounted on a standard DIN rail within a control panel. After mounting, the thermal trip must be adjusted to the rated current of the motor using the front-facing dial. Ensure all terminal connections are tightened to the specified torque to prevent overheating during operation.
What to consider before purchase
Verify the full-load current of your motor falls within the 14-20A range
Ensure the S0 size fits your existing control cabinet layout
Check compatibility with your specific voltage and frequency requirements
Confirm the need for additional auxiliary contacts if required for signaling
Regularly inspect the circuit breaker for signs of wear or thermal stress. Test the trip mechanism periodically to ensure the protection functions remain operational and that the current settings have not been inadvertently altered.

## FAQ

### How much does the Siemens 3RV2021-4BA15 Motor Circuit Breaker cost, and is it available for purchase?

The price is 100.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 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, Installment. All transactions are 100% secure and encrypted.

### Can Siemens 3RV2021-4BA15 Motor Circuit Breaker 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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