# Siemens 3RV2021-4DA10 3-Pole Motor Circuit Breaker 20-25A Size S0

**URL:** https://aio.lv/en/product--siemens-3rv2021-4da10--1796409
**Data updated:** 2026-05-18 02:39 (EEST)
**Category:** Power Sockets
**Manufacturer:** Siemens
**Manufacturer code:** 3RV2021-4DA10
**EAN:** 4011209712546
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 76.99 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 63.63 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rv2021-4da10--1796409

## 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 3RV2021-4DA10 is a high-performance 3-pole motor circuit breaker designed for reliable protection of electrical motors. Featuring an adjustable current range of 20-25A and a compact S0 frame size, this device ensures safe operation and overload protection in industrial applications. It is engineered for durability and efficient integration into electrical control systems, providing essential circuit management for various motor-driven equipment.

## Long description

The Siemens 3RV2021-4DA10 is a high-performance 3-pole motor circuit breaker engineered to provide reliable protection for electrical motors in demanding industrial environments. With an adjustable current range of 20-25A and a compact S0 frame size, this device is designed to ensure safe operation and effective overload protection for various motor-driven systems. Its robust construction facilitates efficient integration into electrical control panels, offering essential circuit management and long-term durability for professional applications.
Advantages
This motor circuit breaker offers exceptional reliability by providing precise thermal and magnetic protection against overloads and short circuits. The compact S0 design allows for space-saving installation within control cabinets, making it an ideal choice for modern electrical systems where panel space is limited. Its adjustable current setting provides flexibility, allowing users to fine-tune the protection level to match the specific requirements of the connected motor, thereby enhancing operational safety and preventing equipment damage.
Suitable for
Industrial motor control systems
Conveyor belt drives
Pump and fan motor protection
HVAC system components
Manufacturing machinery
When it may not be suitable
This device is not intended for use in circuits exceeding its specified current range of 20-25A. It is also not suitable for applications requiring specialized protection features not covered by standard thermal-magnetic motor circuit breakers, such as specific electronic soft-start or variable frequency drive control requirements.
Key specifications
Number of poles: 3
Current range: 20-25A
Frame size: S0
Weight: 0.37 kg
Color: Multicolour
How to use
The device should be installed by a qualified professional within a suitable electrical enclosure. Mount the unit onto a standard DIN rail and connect the power supply and motor cables to the designated terminals, ensuring all connections are tightened to the manufacturer's specified torque. Once installed, adjust the current dial to the rated full-load current of the motor to ensure proper protection. Regular inspections should be conducted to verify that the terminals remain secure and the device is free from dust or debris.
What to consider before purchase
Verify that the motor's full-load current falls within the 20-25A range.
Ensure the S0 frame size fits your existing control panel layout.
Confirm that the environmental conditions meet the technical requirements for industrial switchgear.
Usage recommendations
Always ensure that the power supply is disconnected before performing any installation or maintenance work on the circuit breaker to prevent electrical hazards.

## Specifications

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.37 kg |

### Design

| Feature | Value |
|---|---|
| Product colour | Multicolour |

## FAQ

### How much does the Siemens 3RV2021-4DA10 Motor Circuit Breaker cost, and is it available for purchase?

The price is 76.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 17 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 3RV2021-4DA10 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

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

When making a choice, we recommend paying attention to the key features: weight, 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.

## Image

https://aio.lv/img/cache/product/1796409/58085603_large.webp