# Siemens 3RV2021-4DA15 Motor Protective Circuit Breaker, 18-25 A

**URL:** https://aio.lv/en/product--siemens-3rv20214da15--1840610
**Data updated:** 2026-05-18 02:47 (EEST)
**Category:** Power Sockets
**Manufacturer:** Siemens
**Manufacturer code:** 3RV20214DA15
**EAN:** 4011209841307
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 119.99 €
**Prices and availability valid until:** 2026-08-11 23:59
**Price without VAT (21%):** 99.17 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rv20214da15--1840610

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.07.2026 | free |
| Pickup points | 04.08.2026 | 1.89 EUR |
| Courier delivery to door | 04.08.2026 | 4.99 EUR |

## Summary description

The Siemens 3RV2021-4DA15 is a high-quality motor protective circuit breaker designed for reliable electrical protection. It features an adjustable current range of 18 to 25 A, ensuring optimal safety for industrial motor applications. Engineered in Germany, this compact device provides efficient overload and short-circuit protection, making it an essential component for motor control centers and automation systems requiring precise electrical management.

## Long description

The Siemens 3RV2021-4DA15 is a robust motor protective circuit breaker engineered to provide reliable electrical protection for industrial motors. Designed for precision and safety, this device effectively manages electrical loads within a range of 18 to 25 amperes. Its compact construction allows for space-saving installation in motor control centers and various automation systems, ensuring consistent performance and protection against electrical faults.
Advantages
This circuit breaker offers exceptional reliability through its advanced design, which integrates both overload and short-circuit protection into a single, efficient unit. The adjustable current setting allows for precise calibration to match the specific requirements of the connected motor, thereby preventing damage from thermal stress. Its durable build quality ensures long-term operational stability in demanding industrial environments, while the compact size facilitates seamless integration into existing control panels.
Suitable for
Industrial motor control centers
Automation and control systems
Protection of three-phase motors
Electrical distribution panels
When it may not be suitable
This device is specifically calibrated for motor protection within the 18-25 A range and is not suitable for applications requiring significantly higher or lower current ratings. It is intended for industrial use and may not be appropriate for residential electrical installations that do not meet the specific technical requirements for motor circuit breakers.
Key specifications
Current adjustment range: 18 to 25 A
Number of poles: 3
Weight: 0.383 kg
Integrated auxiliary contacts: 1 NO and 1 NC
Application: Motor protection
How to use
Installation should be performed by a qualified professional in accordance with local electrical regulations. The device is typically mounted on a standard DIN rail within a control cabinet. Once mounted, connect the power supply lines to the input terminals and the motor leads to the output terminals. Use the adjustment dial on the front of the unit to set the current to the rated value of the motor being protected. Ensure all connections are tightened to the specified torque before energizing the circuit.
What to consider before purchase
Verify that the motor's rated current falls within the 18-25 A range.
Ensure the control cabinet has sufficient space for the S0 size housing.
Check compatibility with your existing control system wiring.
Confirm that the environmental conditions meet the manufacturer's specifications.
Usage recommendations: Regularly inspect the circuit breaker for signs of wear or thermal damage and perform periodic testing of the trip mechanism to ensure continued operational safety.

## Specifications

| Feature | Value |
|---|---|
| Input current | 18 - 25 |
| Circuit breaker type | Motor protective circuit breaker |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.383 kg |

### Packaging data

| Feature | Value |
|---|---|
| Package depth | 102 mm |
| Package height | 102 mm |
| Package width | 49 mm |
| Quantity per pack | 1 pc(s) |

### Logistics data

| Feature | Value |
|---|---|
| Country of origin | Germany |

## FAQ

### How much does the Siemens 3RV2021-4DA15 Motor Protective Circuit Breaker cost, and is it available for purchase?

The price is 119.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 8 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 30.07.2026 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 3RV2021-4DA15 Motor Protective 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, 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 3RV2021-4DA15 Motor Protective Circuit Breaker?

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/1840610/58101351_large.webp